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  1. #3961
    Senior Member Three Rings ModItNow's Avatar
    Join Date
    Mar 05 2015
    AZ Member #
    318779
    My Garage
    Acura RDX
    Location
    Napa, Ca

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    Quote Originally Posted by RWD2quattro View Post
    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

    Sent from my SM-G965U using Audizine mobile app

  2. #3962
    Veteran Member Four Rings RWD2quattro's Avatar
    Join Date
    Dec 29 2011
    AZ Member #
    85929
    My Garage
    Lexus IS250, Volvo 850R, Ford tractor
    Location
    The Bay

    Quote Originally Posted by ModItNow View Post
    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
    Sent from my SM-G965U using Audizine mobile app
    Same here 😁, I just installed the flex pump. I’ll log tomorrow and go from there.
    2014 S4, Audi Exclusive DRM, 6MT, 034 Stage 2+ E40, CTS/FD 194mm (3.385), AMS Cooler, AEM meth kit @TB (1000cc), Autotech HPFP, ADV. 1 wheels, BlownOne Ported Throttle-body, CR-15, CF low kick spoiler, Deval CF, Jokerz Ported blower, JHM LWFW/3R, Eurocode, KW V3, ST6 BBK, USP SS clutch line, XPEL full wrap.
    Gone: 2012 S4 Brilliant Black, Prestige, S-tragic.

  3. #3963
    Active Member Two Rings [waZZup]'s Avatar
    Join Date
    Jun 20 2017
    AZ Member #
    401412
    Location
    Saint-P.

    Quote Originally Posted by konst86 View Post
    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 :)

  4. #3964
    Active Member Two Rings mia748sp's Avatar
    Join Date
    Mar 11 2016
    AZ Member #
    370101
    My Garage
    S5, A3, Ducatis
    Location
    GA

    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.

  5. #3965
    Established Member Three Rings friskuh's Avatar
    Join Date
    Jul 31 2017
    AZ Member #
    404044
    Location
    Orlando

    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?

  6. #3966
    Veteran Member Four Rings cspcrx's Avatar
    Join Date
    Jan 04 2013
    AZ Member #
    106838
    My Garage
    2009 Tacoma, 2007 Harley Softail, 1986 Honda CRX
    Location
    Phoenix, az

    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.
    2012 Ibis P+ / DSG / Silk Napa / B&O / Sport Diff. / ADS lite / MMI & Nav / APR Stage 2 & TCU Tuned / 184mm KI LIL BITCH / ECS Kohlefaser Luft-Technik Intake / AMS Alpha Cooler / ECS 2-Piece Rotors / Akebono Pads / VMR 803 19x9.5 ET45 265-35-19 PSS / ECS Drivetrain Bushing Inserts / CR-15

    12.3 @ 112mph 2288DA on 93oct file Stage 2

    THEN THEN THEN Rinse & Repeat!

  7. #3967
    Established Member Three Rings friskuh's Avatar
    Join Date
    Jul 31 2017
    AZ Member #
    404044
    Location
    Orlando

    Quote Originally Posted by cspcrx View Post
    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,

  8. #3968
    Established Member Three Rings friskuh's Avatar
    Join Date
    Jul 31 2017
    AZ Member #
    404044
    Location
    Orlando

    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

  9. #3969
    Veteran Member Four Rings kelseysautobody's Avatar
    Join Date
    Mar 03 2009
    AZ Member #
    39408
    Location
    Cape Cod, MA

    Quote Originally Posted by friskuh View Post
    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.
    2013 S4 S-tronic - APR intake // KI 200mm crank pulley // EPL Stg II DP 93 + TCU tune // PLM hx // Jokerz Blower // Headers
    11.281 @ 121.58
    1993 URS4 - Work in progress...
    Past: 07 S4 6MT ~ 03 A4 3.0 6MT ~ 99 A4 1.8T

  10. #3970
    Veteran Member Four Rings bhvrdr's Avatar
    Join Date
    Jul 21 2004
    AZ Member #
    2873
    My Garage
    997S; Camaro SS; e30 BMW, Toyota FJ
    Location
    South Florida

    Quote Originally Posted by kelseysautobody View Post
    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/

    2010 Audi A4 Avant 6AT - Unitronic Tuned - Bone Stock Hardware
    13.665 at 97.71mph - 93 octane - +1250DA
    Gone:
    2013 Audi S5 DSG - Unitronic Stage 2++ ECU & TCU, 3.17pr, Revo Charge Cooler, CTS Turbo Intake, ST60 380mm BBK
    11.482 at 118.70mph - 97 octane - +465DA
    --------------------------
    2016 A6 -- 2015 S4 -- 2009 A4 -- 2004 S4 -- 2006 A4 -- 2003 A4 -- 2000 A4

  11. #3971
    Established Member Three Rings
    Join Date
    Apr 04 2017
    AZ Member #
    397057
    My Garage
    10 S4, 14 328d, 14 MDX
    Location
    Chicago IL

    Quote Originally Posted by bhvrdr View Post
    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.

  12. #3972
    Established Member Two Rings
    Join Date
    Mar 09 2018
    AZ Member #
    415244
    Location
    Pittsburgh

    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?

  13. #3973
    Senior Member Three Rings evil35r's Avatar
    Join Date
    Mar 22 2016
    AZ Member #
    370642
    My Garage
    HD Fat bob
    Location
    Ham central, VA

    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
    S4 13 EPL cts 57/180 DP Meth/E35 file w/ DSG tune, ROC-EURO intake with velocity stack, custom exhaust, ECS inserts, 034 subframe mounts, CR-15, VCDS mods, Snow Performance stage 2 meth dual 375 nozzles spraying 1200cc 70/30 mix, 034 rear sway, coolant pump mod/divorcée, merc hx, AG M590 wheels wrapped in Indy 500’s. Ratio-3.135, upgraded 75mm TB. 458 AWHP!

    11.8 @ 117 with 1.7 60’ w/o wheels, tires, CP, divorcée, subframe mounts, hx and velocity filter and TB in sig.

  14. #3974
    Established Member Two Rings
    Join Date
    Mar 09 2018
    AZ Member #
    415244
    Location
    Pittsburgh

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

    Quote Originally Posted by evil35r View Post
    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.


    Sent from my iPhone using Tapatalk

  15. #3975
    Senior Member Three Rings evil35r's Avatar
    Join Date
    Mar 22 2016
    AZ Member #
    370642
    My Garage
    HD Fat bob
    Location
    Ham central, VA

    Fwiw you can run 25% coolant to water yearly where you are located. I run 25% all year good for -10...
    S4 13 EPL cts 57/180 DP Meth/E35 file w/ DSG tune, ROC-EURO intake with velocity stack, custom exhaust, ECS inserts, 034 subframe mounts, CR-15, VCDS mods, Snow Performance stage 2 meth dual 375 nozzles spraying 1200cc 70/30 mix, 034 rear sway, coolant pump mod/divorcée, merc hx, AG M590 wheels wrapped in Indy 500’s. Ratio-3.135, upgraded 75mm TB. 458 AWHP!

    11.8 @ 117 with 1.7 60’ w/o wheels, tires, CP, divorcée, subframe mounts, hx and velocity filter and TB in sig.

  16. #3976
    Established Member Two Rings
    Join Date
    Mar 20 2018
    AZ Member #
    415804
    Location
    Baltimore

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

  17. #3977
    Senior Member Three Rings BDP's Avatar
    Join Date
    Feb 07 2015
    AZ Member #
    313980
    Location
    Ohio

    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.
    2014 Estoril Blue S4: [DSG] APR Ultracharged - Dual Pulley (57.75mm & 187mm), APR TCU tune, Bilstein PSS10 Coilovers, AWE Touring Cat-Back with Resonated Downpipes, JHM Test Pipes, ECS Intake, Divorced APR CPS (Heat Exchanger)

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