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

[bhvrdr]

These cars need better cooling stock! I installed my AMS kit before going stage 2 and I noticed a difference. I would not even consider stage 2 or higher without cooling.

Its been interesting hanging out on the turbo forums here on AZ. The guys get freaked out when they see IATs that are 30F over ambient. Start harping on people that they need a MUCH MUCH bigger intercooler. Until we had decent cooling we had folks on the S4 forum regularly seeing 90F over ambient

Mike

[BooS4tedBulldog]

That’s pretty close to Dual Pulley Ratio (183mm and 57mm is 3.21)

I would say YES if you are still on stock Cooling




Pete

Even stock,I think the cooling helps especially in the summer.


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These cars need better cooling stock! I installed my AMS kit before going stage 2 and I noticed a difference. I would not even consider stage 2 or higher without cooling.

Im on 189 dual pulley tune and needed cooling, i just installed the merc unit last night and the first thing i noticed was the recovery rate compared to stock. it seems at least at my ratio, yours might be a little worse... i could do a third gear pull fine up to like 130-140f in 85 to 90 degree temps but anything after that was pointless... no recovery at all. trying to do a second pull wasn't an option. And 4th gear wasn't an option.

Thanks for the replies. Looks like I will be ordering the Merc HE.

[B18b1ex]

Its been interesting hanging out on the turbo forums here on AZ. The guys get freaked out when they see IATs that are 30F over ambient. Start harping on people that they need a MUCH MUCH bigger intercooler. Until we had decent cooling we had folks on the S4 forum regularly seeing 90F over ambient

Mike

I had the Vagcom hooked up last week after i installed the rs4 grill and from around town to some serious highway pulls in 90plus degree heat I never saw anything over about 58C. That’s stock pump and early adopter Merc. On a 187.


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[bhvrdr]

Thats awesome sean. Looking forward to seeing some of your times come fall.

I had the Vagcom hooked up last week after i installed the rs4 grill and from around town to some serious highway pulls in 90plus degree heat I never saw anything over about 58C. That’s stock pump and early adopter Merc. On a 187.


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[extratime]

4 days of having the SC loop vented and there's probably 8 oz. into the overflow catch bottle. The strange part is fluid level in the reservoir doesn't seem to be dropping one bit. If anything, it might be rising. This makes me think air is getting trapped into the system with it vented. I'm going to bleed the system again tonight. Picture was taken after the car sat overnight.

How much coolant does your reservoir hold? Plus which one is it?

[Melen2120]

Not to change the subjects, but is there any talks of a lower temp t-stat ?


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[kelseysautobody]

How much coolant does your reservoir hold? Plus which one is it?

The little res probably holds a 15-20oz? It’s the one used in bhvdr’s DIY. But I also have the PLM tank that holds close to a gallon.


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[Maddog3xx8]

I just have one thing to say , you won’t know till you try ..


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Update?

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[extratime]

The little res probably holds a 15-20oz? It’s the one used in bhvdr’s DIY. But I also have the PLM tank that holds close to a gallon.


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Thank you. Its got to hold more then the 12oz the Revo res holds. I didn't know there was a diy for it

[Melen2120]

Update?

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Nothing yet , still tweaking . I don’t want to put out anything that is not concrete or useful . Will say this tho , it’s going good .


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[Maddog3xx8]

Nothing yet , still tweaking . I don’t want to put out anything that is not concrete or useful . Will say this tho , it’s going good .


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Good luck, itching to get a TCU solution for my STG 2 SQ5... Definitely keep us posted

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[Melen2120]

Good luck, itching to get a TCU solution for my STG 2 SQ5... Definitely keep us posted

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I just have to ask , how much you welling to pay ? Lol jk jk


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[FastLane1000]

I had the Vagcom hooked up last week after i installed the rs4 grill and from around town to some serious highway pulls in 90plus degree heat I never saw anything over about 58C. That’s stock pump and early adopter Merc. On a 187.


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Good feedback! Did you install a reservoir with the merc hx?

[B18b1ex]

Good feedback! Did you install a reservoir with the merc hx?

Currently it is not divorced.


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[friskuh]

Loe, or whoever knows; what’s the limiting factor for high power in our engines? Loe said the rods tap out at around 700 wtq but isn’t the block itself very weak. for example, i’ve been thinking about adding a forged 3.2 crankshaft & adding forged 2.7t rods (they will fit with the 3.2 crankshaft) but would it just be useless since i’ve heard the block itself is weak & needs an iron sleeve for the pistons? sorry if what i’m saying sounds confusing, i can clarify if i lost y’all.

[Melen2120]

I feel like we all skipped a few steps in the power adding and cooling upgrades . What ever happened to lower temp t-stat , larger radiator , oil cooler ....


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[Loe]

Loe, or whoever knows; what’s the limiting factor for high power in our engines? Loe said the rods tap out at around 700 wtq but isn’t the block itself very weak. for example, i’ve been thinking about adding a forged 3.2 crankshaft & adding forged 2.7t rods (they will fit with the 3.2 crankshaft) but would it just be useless since i’ve heard the block itself is weak & needs an iron sleeve for the pistons? sorry if what i’m saying sounds confusing, i can clarify if i lost y’all.

Not sure, but we are about 250awtq away from throwing OE rods at this point with a DP/UC/Ported set-up. I will miss this platform when I go (I've started searching slowly these past two weeks, summer isn't exactly the best time to get the best deal unfortunately), this engine/Gen II DSG is a gem and so is this platforms reliability, can you imagine what this car would do with a 300-400lbs weight reduction without changing what we current have in mod? I hope you all continue to see where the limitations are, it's definitely time to move onto "stage III-IV" levels of power on this car. Single-Turbo kits have been craved for a bit recently and I hope one of the major tuners will listen and develop something unreal.

Do you plan on utilizing the 2.7t OE rods or aftermarket ones? I believe our rods are stronger than theirs.

[friskuh]

Not sure, but we are about 250awtq away from throwing OE rods at this point with a DP/UC/Ported set-up. I will miss this platform when I go (I've started searching slowly these past two weeks, summer isn't exactly the best time to get the best deal unfortunately), this engine/Gen II DSG is a gem and so is this platforms reliability, can you imagine what this car would do with a 300-400lbs weight reduction without changing what we current have in mod? I hope you all continue to see where the limitations are, it's definitely time to move onto "stage III-IV" levels of power on this car. Single-Turbo kits have been craved for a bit recently and I hope one of the major tuners will listen and develop something unreal.

Do you plan on utilizing the 2.7t OE rods or aftermarket ones? I believe our rods are stronger than theirs.

Forged 2.7t rods with billet forged 3.2 crank. but i’m struggling between keeping oe pistons size because i just want about 650-750 whp not going for something completely insane . idk if ill blow a piston without a sleeve but dont feel like dropping 4-5 k on a sleeve. & damn youre a legend for this platform though youll be one for the ttrs too.

[friskuh]

Forged 2.7t rods with billet forged 3.2 crank. but i’m struggling between keeping oe pistons size because i just want about 650-750 whp not going for something completely insane . idk if ill blow a piston without a sleeve but dont feel like dropping 4-5 k on a sleeve. & damn youre a legend for this platform though youll be one for the ttrs too.

also yeah, 300 lbs can be shed easily. lightweight seats, lightweight battery, carbon hood, lightweight wheels & brakes is easy 300 lbs

[whiped]

Can you guys all link me to some dyno sheets? :)

I know of quite a few but figured I'd ask here as well.

What I'm particularly interested in is multiple runs on the same dyno with either the same car with different setups or different cars.

I'm just trying to extrapolate some data to see if it lines up with my own findings

[tmoe]

Not sure, but we are about 250awtq away from throwing OE rods at this point with a DP/UC/Ported set-up. I will miss this platform when I go (I've started searching slowly these past two weeks, summer isn't exactly the best time to get the best deal unfortunately), this engine/Gen II DSG is a gem and so is this platforms reliability, can you imagine what this car would do with a 300-400lbs weight reduction without changing what we current have in mod? I hope you all continue to see where the limitations are, it's definitely time to move onto "stage III-IV" levels of power on this car. Single-Turbo kits have been craved for a bit recently and I hope one of the major tuners will listen and develop something unreal.

Do you plan on utilizing the 2.7t OE rods or aftermarket ones? I believe our rods are stronger than theirs.

So what are you looking at?

[whiped]

So what are you looking at?

Look at Oleg's post over in the S5 section. He compared a lot of our internals to 2.7/3.2 engines.

[p3u]

Who in here is using a 200mm+ crank pulley with a SC pulley as well?

I'm about to make the leap, wanted some feedback for those that have.

[whiped]

Who in here is using a 200mm+ crank pulley with a SC pulley as well?

I'm about to make the leap, wanted some feedback for those that have.

I just went from an FD 189mm to a KI 200mm...

Torque across the rev band is way up and it seems to pull better up top. IATs don't seem to be impacted as much as I thought they would be.

MAPs are slightly concerning though as they are maxed and not reading accurately. I plan to throw on bigger ones but waiting for 034 to get back in the office.



Just some random logs: https://docs.google.com/spreadsheets...it?usp=sharing

[p3u]

I just went from an FD 189mm to a KI 200mm...

Torque across the rev band is way up and it seems to pull better up top. IATs don't seem to be impacted as much as I thought they would be.

MAPs are slightly concerning though as they are maxed and not reading accurately. I plan to throw on bigger ones but waiting for 034 to get back in the office.



Just some random logs: https://docs.google.com/spreadsheets...it?usp=sharing

Good to hear! I'm doing the same jump from VD 189mm to a 203mm. What's your cooling system?

[whiped]

Meth and AWE Coldfront + PLM Res + a second Varimax pump

I'm waiting for Tyrol to finish up a set of ICs to test currently. Once I have those I'm scrapping the hard lines and redoing the loop.

[Loe]

that seems to be interesting that the ones who have a 200mm currently w/ a 57.xx mm s/c pulley with fuel issues up top seems to be the B8 guys and not the B8.5 guys.

[p3u]

Meth and AWE Coldfront + PLM Res + a second Varimax pump

I'm waiting for Tyrol to finish up a set of ICs to test currently. Once I have those I'm scrapping the hard lines and redoing the loop.

I might need to add more to my cooling system. I have the first gen Merx HX that's larger then what they sell now (23x21x2.4). Guess time well tell if thats enough.

Any information on the Varimax you can share?

[whiped]

I might need to add more to my cooling system. I have the first gen Merx HX that's larger then what they sell now (23x21x2.4). Guess time well tell if thats enough.

Any information on the Varimax you can share?

Sure... see here: https://www.audizine.com/forum/showt...1#post13097552

Pump is from here: https://www.ebay.com/itm/302718033147

I have it mounted where the SAI pump usually goes right after the PLM res.



I have it wired in parallel with the stock pump and switched to a 25A fuse


I still think a CWA100 may be a better, easier solution.

A local car just did it so once I run some logs on it I'll let you know for sure.

[ModItNow]

I've been wanting to upgrade my pulley size as well. Not sure if I should wait until I port my blower and possibly meth injection for better cooling. I have awe hx with res currently

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[p3u]

Sure... see here: https://www.audizine.com/forum/showt...1#post13097552

Pump is from here: https://www.ebay.com/itm/302718033147

I have it mounted where the SAI pump usually goes right after the PLM res.



I have it wired in parallel with the stock pump and switched to a 25A fuse


I still think a CWA100 may be a better, easier solution.

A local car just did it so once I run some logs on it I'll let you know for sure.

CWA100 has been on my radar for a while now. If it works and someone could make a plug and play adapter it's a winner.

[Fresh.S4]

also yeah, 300 lbs can be shed easily. lightweight seats, lightweight battery, carbon hood, lightweight wheels & brakes is easy 300 lbs

what are the least expensive battery/ brake options?
not sure i'd want to get rid of the front seats because family car.

[FastLane1000]

Sure... see here: https://www.audizine.com/forum/showt...1#post13097552

Pump is from here: https://www.ebay.com/itm/302718033147

I have it mounted where the SAI pump usually goes right after the PLM res.



I have it wired in parallel with the stock pump and switched to a 25A fuse


I still think a CWA100 may be a better, easier solution.

A local car just did it so once I run some logs on it I'll let you know for sure.

When you removed the SAI how did you address the fault code?

[whiped]

My cold start and SAI are tuned out. (No need for them without cats)

The CWA100 is the same housing as the CWA50(our stock pump) so it bolts right up.

CWA100 is a 4 pin connector vs our 3 pin.

4 pins are Power, ground, PWM-in, PWM-out (Not that order)
3 pin is Power, ground, PWM-in

Building an adapter is trivial, and once it is adapted it is fully plug n play including tune adjustable pump speeds.

Tyrol can make you an adapter if you really want one. I know they made one for their personal track car :)

[PeteRock]

My cold start and SAI are tuned out. (No need for them without cats)

The CWA100 is the same housing as the CWA50(our stock pump) so it bolts right up.

CWA100 is a 4 pin connector vs our 3 pin.

4 pins are Power, ground, PWM-in, PWM-out (Not that order)
3 pin is Power, ground, PWM-in

Building an adapter is trivial, and once it is adapted it is fully plug n play including tune adjustable pump speeds.

Tyrol can make you an adapter if you really want one. I know they made one for their personal track car :)

Did 034 tune the cold start and sai out? I have APR and would love to do the same but not sure that they offer this.

Can this be done by VAGCOM?


Pete

[whiped]

Yeah it is part of my tune.

You can remove the SAI, it will throw a CEL once a week or so. If you have a P3 it is very quick to clear. (Local APR car does this)

On that note, if it isn't tuned out the valve might open downstream, no idea if that will be an issue over time.

[Loe]

So what are you looking at?

TTRS or RS5 (if they end up cracking open the ECU, rumor has it that the Bosch ECU has been cracked on the BMW platform/B58 engine, which is the same ECU as the RS5, great thing is that they have a way to freeze frame the flash counter...). Toying with the idea of keeping the S5 as a "beater" though, but I'd hate for it to be parked out side all the time...

[RWD2quattro]

TTRS or RS5 (if they end up cracking open the ECU, rumor has it that the Bosch ECU has been cracked on the BMW platform/B58 engine, which is the same ECU as the RS5, great thing is that they have a way to freeze frame the flash counter...). Toying with the idea of keeping the S5 as a "beater" though, but I'd hate for it to be parked out side all the time...

I was reading about that, awesome news. I'm now thinking RS5 (turbo upgrade) but keep S4 since it's my daily

[p3u]

The CWA100 is the same housing as the CWA50(our stock pump) so it bolts right up.

CWA100 is a 4 pin connector vs our 3 pin.

4 pins are Power, ground, PWM-in, PWM-out (Not that order)
3 pin is Power, ground, PWM-in

Building an adapter is trivial, and once it is adapted it is fully plug n play including tune adjustable pump speeds.

Tyrol can make you an adapter if you really want one. I know they made one for their personal track car :)

The bolt on factor is why I've been considering this. Injust want a 100% factory like installation, hence the pump choice and wire harness adapter.

I just want to know of the additional flow is making a real difference or a negligible one.

I wonder how much Tyrol would want for the harness.

[whiped]

I wonder how much Tyrol would want for the harness.

I'll let you know, I reached out and he is going to make a batch of them