**OFFICIAL** Life Beyond Stage II: the higher stage development thread

[ModItNow]

It’s easy to replace filter, I did replace mine thinking my shit was clogged up due to E. I cut apart the housing to expose filter and filter was clean and had no build up anywhere. Every 3k I run Liqui Moly fuel injector cleaner, even my valves looked great at 83k.
http://https://www.audizine.com/forum/showthread.php/611289-What-did-you-do-to-with-your-S4-today?p=13311458&viewfull=1#post13311458
http://https://www.audizine.com/forum/showthread.php/611289-What-did-you-do-to-with-your-S4-today?p=13300499&viewfull=1#post13300499

I tried that fuel injector cleaner when you recommended it to me last. I think that stuff works, one morning I blew some black smoke out on a cold start haha

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[RWD2quattro]

I tried that fuel injector cleaner when you recommended it to me last. I think that stuff works, one morning I blew some black smoke out on a cold start haha
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Same here 😁, I just installed the flex pump. I’ll log tomorrow and go from there.

[[waZZup]]

My logs with new pulley 194mm
A4 B8.5 3.0T s- tronic Revo st2 (93 File)
3rd/4th gear pull (97-200km/h= 60-125m/h)
14*C ambient
Dual pulley (194mm/57.65mm)
Custom chargecooler (water 95% + 5% motul mocool)

You've cut the most intriguing part of the log - pressure :)

[mia748sp]

I've been lurking on this thread and in the forum for quite awhile now. It's been a great resource/reference for me and thought I'd offer to make a few harnesses for the CWA100 if anyone is looking to go that route. I have a few of the connectors needed to make about 3 or 4 extra currently. I'll have to test it out when I'm back home. I've been in and out of town a lot lately but should be around a lot after mid October. The connectors are easily souced through electrical distributors. I contacted Tecomotive while researching and they had this to say about the swap:

The CWA50 uses a different internal control circuit than the CWA100.

To get a bit more technical....
The CWA50 has an internal pull up and the CWA100 an internal pull down
resistor.
So it really depends of the cars ecu controlling circuit.
So in not so technical terms ... It might work. But it might also not
work at all.
The signal GND of the CWA100 by the way is no problem. You could just
connect it to the cars ground.

[friskuh]

For anyone that knows about boost, DI engines, & volumetric efficiency; how much power do you think can be gained from not only porting the supercharger but also the heads, with 1mm oversized valves & possibly shaved down camshafts?

[cspcrx]

without knowing the flow of the stock heads its hard to say if valves would be enough with the stock cams. It may take new cams with longer duration to make the next large jump.

[friskuh]

without knowing the flow of the stock heads its hard to say if valves would be enough with the stock cams. It may take new cams with longer duration to make the next large jump.

that's why i said shaved cams,

[friskuh]

i'm not looking for accurate just approximate. if 20-30 whp was gained through supercharger how much would be gained from head porting, valve upgrade , & shaved down camshafts

[kelseysautobody]

i'm not looking for accurate just approximate. if 20-30 whp was gained through supercharger how much would be gained from head porting, valve upgrade , & shaved down camshafts

Not an apples to apples comparison but with head work and 7a cams the 20v 5 cylinder AAN sees 20-30whp gains. Maybe more depending on the build. It's obviously a much older motor but is capable of putting down some good numbers.

[bhvrdr]

Not an apples to apples comparison but with head work and 7a cams the 20v 5 cylinder AAN sees 20-30whp gains. Maybe more depending on the build. It's obviously a much older motor but is capable of putting down some good numbers.

Also not the same engine but when I built my 2.0T engine I did a 5 axial port and Polish one the heads and was able to run the 104 octane race file using only 93 octane fuel.

Apr resuts were VERY interesting as well...

https://www.goapr.com/news/2013/05/1...-head-porting/

[GandalfTheIbis]

Also not the same engine but when I built my 2.0T engine I did a 5 axial port and Polish one the heads and was able to run the 104 octane race file using only 93 octane fuel.

Apr resuts were VERY interesting as well...

https://www.goapr.com/news/2013/05/1...-head-porting/

I'll take 126hp. Happily. Even a 10% increase over a dual pulley setup would be worth it to me.

[nick0188]

Figured this may be the best place to ask this, since most in here have been around a while. I haven't found much of anything with people adding fans to the front of the HX? Pretty much all of supercharged vehicles replace the HX (bigger) and add fans, and in this platform we only replace the HX. I currently am dual pulley (57.5/183) with a porter Jokerz blower (new coolers), have the Merc HX and reservoir divorced with the pump mod and other basic bolt ons (gutted cats, DP's, AWE track rear, Autotech pump upgrade, IE intake) and am fighting IAT'S. From 60-120mph I watch them go from 40C to 75C via my P3 gauge. System is 50/50 G13/Distilled water (going to switch to a most water based mix after winter), been bled a billion times and I just don't see how they are still this high. They do recover VERY quick, going back down to 40C from 75C in about 5-10 seconds.

Back to my fan idea, they hover around 50C in the heat in traffic and I thought fans may help this and ever would on the highway. I was thinking 2 6" fans on the bottom of the HX under the crash bar. This is where hot coolant comes in so I figured I'd be most effective there.

Any help/suggestions?

[evil35r]

I thought the same thing. However with your mods your iats shouldn’t be that high I see the same iats but with stock sc and hx only thing I have is pump mod And meth. Merc is on order. I would think you should be below 65c as that is what I am expecting. I thought dual fans controlled by a switch would be pretty cool. Curious as to what others think

[nick0188]

I thought the same thing. However with your mods your iats shouldn’t be that high I see the same iats but with stock sc and hx only thing I have is pump mod And meth. Merc is on order. I would think you should be below 65c as that is what I am expecting. I thought dual fans controlled by a switch would be pretty cool. Curious as to what others think

The divorce of the loop doesn’t really do anything if you still run a 50/50 G13 mix, so I wouldn’t expect that to help. The ported blower I heard would help, but I haven’t seen much in that regard. I don’t believe it recovered as fast before though, so maybe there is where is it is helping.

I actually ran two switches last night, one to connect/disconnect PWM for the coolant pump (to do the pump mod on demand) and another for the fans I’m going to eventually do. Probably will wait until spring and swap out coolant for mostly distilled water and add the fans. Was just looked to see if anyone else had dabbled in that, as I couldn’t find anything!

Edit: I didn’t realize you’re post meant you have the stock HX too. Ugh.


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[evil35r]

Fwiw you can run 25% coolant to water yearly where you are located. I run 25% all year good for -10...

[TruS4]

Same struggle man...but saw better iat when i was 70% water

[BDP]

What I noticed most with divorced system is the onset of heat issues is just delayed. Once it get's heated up, it's back to the same ole rinse lather repeat process in getting temps to come back down. I also noticed my coolant in the lines doesn't get nearly as hot but the supercharger case can still cook an egg on it after a few pulls. I really think you can throw as much as you want at upgraded cooling but until you can mitigate the heat transfer from the block to the supercharger I don't see much success. I think it's why killer chiller systems work so well because you can actually cool the entire supercharger down and the coolant. I've yet to see that with standards means outside of an ice box.

[Jimcoily]

Questions for you guys mixing E85 and pump gas 91, 92, and 93 octane
1) Have you noticed a difference in MPG?
2) Are you running a 100 octane tune or using the E85 for cooling?

I plan on Ultracharging my S4 when I find some time, I'm debating if I should go with the 91 tune or the 100 tune. If I go with the UC 100 tune I plan on mixing 4 gallons of E85 and the rest 92.
I'm also planning on running meth in the future.
Thanks for the help

[cspcrx]

Specs in sig and my UC gets installed next week. I have been running stage 2 and DP APR 93 tune for a long time. I would not do their 91 tune if you have access to E85 or flex fuel. Yes my mpg dropped but really not that much.

I run a blend that gets me E28 which is 95 octane fuel on the APR 93 octane tune. I do not have access to E85 but Flex fuel which I have tested at my station is actually 51% ethanol or E51. To do this I run a 1.3 to 1 ratio of 91 octane to flex fuel (E51). Done this for several years and love it no issues.

This only answers part of your question as I have never tried the 100 octane tune.

[extratime]

Figured this may be the best place to ask this, since most in here have been around a while. I haven't found much of anything with people adding fans to the front of the HX? Pretty much all of supercharged vehicles replace the HX (bigger) and add fans, and in this platform we only replace the HX. I currently am dual pulley (57.5/183) with a porter Jokerz blower (new coolers), have the Merc HX and reservoir divorced with the pump mod and other basic bolt ons (gutted cats, DP's, AWE track rear, Autotech pump upgrade, IE intake) and am fighting IAT'S. From 60-120mph I watch them go from 40C to 75C via my P3 gauge. System is 50/50 G13/Distilled water (going to switch to a most water based mix after winter), been bled a billion times and I just don't see how they are still this high. They do recover VERY quick, going back down to 40C from 75C in about 5-10 seconds.

Back to my fan idea, they hover around 50C in the heat in traffic and I thought fans may help this and ever would on the highway. I was thinking 2 6" fans on the bottom of the HX under the crash bar. This is where hot coolant comes in so I figured I'd be most effective there.

Any help/suggestions?

I ran dual 7 inch fans for almost a year. They didn't do a thing. They do look good though.20170715_144410_resized.jpeg

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[nick0188]

I ran dual 7 inch fans for almost a year. They didn't do a thing. They do look good though.20170715_144410_resized.jpeg

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Thanks for that heads up. They have been removed from my list!

Speaking of this, I actually un-did the pump mod (hooked it back up to oem control) and have been seeing ridiculously better results (as crazy as that sounds). I did a pull from 60-150 a few days ago and ended at 75C. Another from 60-130 ended at 65C. Before I would hit 75C by 100mph.


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[Jimcoily]

Thank you for the reply, I misunderstood E85 octane rating. I thought E85 was somewhere around 116 octane but its more like 100. I think ill go with the 93 UC tune.

Specs in sig and my UC gets installed next week. I have been running stage 2 and DP APR 93 tune for a long time. I would not do their 91 tune if you have access to E85 or flex fuel. Yes my mpg dropped but really not that much.

I run a blend that gets me E28 which is 95 octane fuel on the APR 93 octane tune. I do not have access to E85 but Flex fuel which I have tested at my station is actually 51% ethanol or E51. To do this I run a 1.3 to 1 ratio of 91 octane to flex fuel (E51). Done this for several years and love it no issues.

This only answers part of your question as I have never tried the 100 octane tune.

[IllusionalTA]

Octane rating isn’t as important in regards to ethonol, like it is for petroleum products, the E85 cools the air charge, and it is resistant to knock, due to this property, allowing more advance, and the by product is lower IAT’s in the chamber. I’ve made 1700hp on e70, in my firebird, sad we can’t run straight E85, but the gains and how cheap it is make it a wise choice for fueling these hot boxes..

[Morritse]

Thank you for the reply, I misunderstood E85 octane rating. I thought E85 was somewhere around 116 octane but its more like 100. I think ill go with the 93 UC tune.

AKI is only part of the strongest as Jim has said. When you're doing ethanol blends to run pump has tunes, you treat e84 as ~114 octane.

[Loe]

Octane rating isn’t as important in regards to ethonol, like it is for petroleum products, the E85 cools the air charge, and it is resistant to knock, due to this property, allowing more advance, and the by product is lower IAT’s in the chamber. I’ve made 1700hp on e70, in my firebird, sad we can’t run straight E85, but the gains and how cheap it is make it a wise choice for fueling these hot boxes..

this is correct, if the E85 octane rating is to be believed, then I'm only running 99.5 at a 50% mix, and I run a timing profile of a 104 octane file. If I were to utilize 100 octane race fuel on a 104 octane file, I would get ignition corrections, yet with a 50% ethanol mix of e85/93, I would have no corrections.

The value of E85 goes beyond its octane rating, you are injecting more fuel and it burns cooler. Most full E85 cars can be tuned with a similar timing profile of C16 (which is approx 115 octane), just to give you an idea of the "effective" octane of E85.

[PeteRock]

Thanks for that heads up. They have been removed from my list!

Speaking of this, I actually un-did the pump mod (hooked it back up to oem control) and have been seeing ridiculously better results (as crazy as that sounds). I did a pull from 60-150 a few days ago and ended at 75C. Another from 60-130 ended at 65C. Before I would hit 75C by 100mph.


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The fans definitely don’t work....I’ll actually be testing out an external spray system that was originally developed for the B5 S4 after the Winter is over here in Chicago

I picked up the kit when I purchased my Water/Meth kit because I can control the pump with the Cortex EBC Boost Controller and program it to only spray at certain times based on quite a few variables like IAT, RPM, Speed etc.

It taps right into the washer fluid reservoir and they just released a new design that allows you to string together multiple nozzles in a lot of different places and they can be stuck to the back of your grille with tabs that make them invisible

I have the KC and was actually thinking of spraying it and the AC condenser especially at low speeds and at idle

https://usrallyteam.com/index.php?ma...ro58d7usqtu5v4


Pete

[cspcrx]

Interested in seeing results of spraying HX.

[PeteRock]

Interested in seeing results of spraying HX.

I’m definitely curious to see if it will offer any benefits

Maybe I’ll get it installed before Spring to test it out :)


Pete

[extratime]

Interested in seeing results of spraying HX.

I did that for awhile. It didn't do anything either. The only things I've had sucess with are the traditional cooling mods. Meth/E85/HX/ice.

I've experimented with lots of different things: fans/mister/co2/ducting air directly into the box and probably more I forgot about. None of it worked.

[cspcrx]

must be because we just make so much heat it cannot over come that. From the video the impact was really not that large. They were at a steady speed and only got a few degrees reduction and it even says that over 50mhp no benefit.

I was thinking as a way to cool the system down before a run more quickly, kind of like the ice box.

[extratime]

must be because we just make so much heat it cannot over come that. From the video the impact was really not that large. They were at a steady speed and only got a few degrees reduction and it even says that over 50mhp no benefit.

I was thinking as a way to cool the system down before a run more quickly, kind of like the ice box.

I had the exact same thoughts you did. I think on a long run where air could stay constant threw the HX fins it would probably work. But it doesn't do anything for the 1/4 or to combat heat soak after a pass and the car is shut off. I even tried it with the fans and it didn't help at all.

I still think the fans are a good idea. They've been proven on many different platforms. The big problem is there are no good quality fans to be had that are 6-7 inches. All the fans available don't even come close to the cfm they claim.

[cspcrx]

What about spal, seems those were always under rated. A friend who works at Ron Davis racing won’t use anything else but because others won’t perform.

[IllusionalTA]

A2w is way diff than a2a, cooking water, will take a lot longer, than simply cooking air, the fans will work well sitting still, by keeping air flowing over the hx, but it could end up Having an adverse effect on air going through it, whole in motion.. due to the placement, the oem rad fans do a great job of pulling air through the larger units.. I’ve played with fans on my firebird, trying to keep motor cool, and adding a shroud, and. Flaps to the shroud made the largest diff, it allows air to flow past fans while in motion

[FastLane1000]

What about cutting a hole in your hood over the supercharger? Maybe install a nice looking vent.

[extratime]

What about cutting a hole in your hood over the supercharger? Maybe install a nice looking vent.

I'm pretty sure someone did that awhaile back. I wouldn't do it. Maybe if I bought a carbon hood and could keep the stock one stored somewhere.

I think your better off just stcking with the more traditional cooling mods.

I also agree with what iIlusion said about our stock fans. There very powerful and it's pretty effective to turn on the defrost and a/c at the sametime. If I recall correctly when the temp is turned up to 81 or 82 they will both activate. This will drop your temps quite a bit but not enough on there owen.

[Johnson]

Hey guys, I have searched for this but haven't seen much information related to the 3.0TFSI. Most of the posts are about the 2.0T.
Any idea what the code below could be? Leaky injector, faulty HPFP, faulty fuel pressure sensor, O2 sensor?

I've been running the DP 93 tune with Bell ethanol defense after running full E85 for maybe a month or two.
I was hoping fuel trims would decrease seeing as I have the upgraded HPFP and running the 93 tune.
LTFTs are still in the high teens. At idle they are ~12% for both banks. At part throttle, I see ~18%...

6225 - Fuel Pressure Sensor (G247)
P119A 00 [032] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Mileage: 128049 km
Date: 2018.10.25
Time: 17:10:28

Engine speed: 2120.00 /min
Normed load value: 25.1 %
Vehicle speed: 46 km/h
Coolant temperature: 72 °C
Intake air temperature: 48 °C
Ambient air pressure: 970 mbar
Voltage terminal 30: 13.405 V
Unlearning counter according OBD: 32
Engine speed: actual: 2112 /min
MAF_ENVD: 294.14117 mg/stroke
Coolant temperature (unfiltered): 72.75 °C
FUEL_MASS_REQ_I_CTL_ENVD: -12.562500
FUP_ENVD: 61133.2965 hPa
FUP_EFP_ENVD: 4773.4 hPa

[Johnson]

Also noticed my fuel economy has dropped quite a bit. I'm not going crazy yet guys! But it was not uncommon for me to see 24-26mpg, now I'm getting around 19mpg. This is on the 93 tune by the way.

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[Loe]

Hey guys, I have searched for this but haven't seen much information related to the 3.0TFSI. Most of the posts are about the 2.0T.
Any idea what the code below could be? Leaky injector, faulty HPFP, faulty fuel pressure sensor, O2 sensor?

I've been running the DP 93 tune with Bell ethanol defense after running full E85 for maybe a month or two.
I was hoping fuel trims would decrease seeing as I have the upgraded HPFP and running the 93 tune.
LTFTs are still in the high teens. At idle they are ~12% for both banks. At part throttle, I see ~18%...

6225 - Fuel Pressure Sensor (G247)
P119A 00 [032] - Malfunction
Intermittent - Not Confirmed - Tested Since Memory Clear
Freeze Frame:
Fault Status: 00000001
Fault Priority: 2
Fault Frequency: 3
Mileage: 128049 km
Date: 2018.10.25
Time: 17:10:28

Engine speed: 2120.00 /min
Normed load value: 25.1 %
Vehicle speed: 46 km/h
Coolant temperature: 72 °C
Intake air temperature: 48 °C
Ambient air pressure: 970 mbar
Voltage terminal 30: 13.405 V
Unlearning counter according OBD: 32
Engine speed: actual: 2112 /min
MAF_ENVD: 294.14117 mg/stroke
Coolant temperature (unfiltered): 72.75 °C
FUEL_MASS_REQ_I_CTL_ENVD: -12.562500
FUP_ENVD: 61133.2965 hPa
FUP_EFP_ENVD: 4773.4 hPa

I would log your HPFP/LPFP PWM value's, as well as your fuel hPa values. When mine was going south, I had a similar issue where my HPFP sensor was faulty, so when the PWM signal got too high, it basically dumped fuel into cyl. The sensor isn't servicable if it is this, so a new HPFP is needed.

[friskuh]

Also noticed my fuel economy has dropped quite a bit. I'm not going crazy yet guys! But it was not uncommon for me to see 24-26mpg, now I'm getting around 19mpg. This is on the 93 tune by the way.

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i get 15 stock . 9 if i play around lmao.

[bhvrdr]

My lpfp may be on its way out. Whats the consensus for eventual dual pulley cars on getting the latest proper AS non flex replacement or buying the AN flec fuel pump? Is the flex fuel pump just going to cause headaches with the bucket running dry or is it a better option?

Thanks
Mike