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  1. 02-07-2016 10:10 PM #1
    GRUMPY-S4
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    13.5 Psi on Stage 1

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    Is that whats expected? For some reason I thought it was 14.5 psi?
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  2. 02-07-2016 10:34 PM #2
    lowjonathan
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    is this reading from vcds?

    cts pulley 15psi till redline

    torque pro give 19psi
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  3. 02-07-2016 10:35 PM #3
    fitzydude
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    I was thinking that stage 1 epl tune was bit conservative.
    2010 S4 / 6MT / 034 RSWB & Motor Mounts / AMS Cooling / EC Alu Kreuz & inserts / B12 suspension / CTS SC & JHM OD Pulley (PR:3.139) / JHM STS & Stg 4 clutch / Magnaflow w/cutouts / CTS Downpipes / V710 / Eventuri-Euro / USP clutch line / E35 / Chipwerke 3-1 / Revo - 467 awhp
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  4. 02-07-2016 10:52 PM #4
    jran76
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    2002 Audi S4
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    For around here, that's pretty good. On stage 2, I'm only hitting 15-16 max.

    Is it the same tune you were running on the dyno?
    2018 S4 : Daytona Gray : Black Nappa : Carbon Atlas : S Sport : Black Optics : 034 Springs/Rear Sway Bar/Inserts : 19x9.5" BBS CH-R Wheels : EPL tune : Wagner Intercooler
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  5. 02-08-2016 05:41 AM #5
    GRUMPY-S4
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    Quote Originally Posted by lowjonathan View Post
    is this reading from vcds?

    cts pulley 15psi till redline

    torque pro give 19psi
    Read from my P3 gauge.
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  6. 02-08-2016 05:41 AM #6
    GRUMPY-S4
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    Quote Originally Posted by jran76 View Post
    For around here, that's pretty good. On stage 2, I'm only hitting 15-16 max.

    Is it the same tune you were running on the dyno?
    Yes same tune
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  7. 02-08-2016 06:05 AM #7
    Mat@1975
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    Hello,

    I would be interresting to log on a full pull to have a nice curve in VCDS, and to log things like % opening of the bypass valve.
    If, for example, you were running at a verry low ext temp with low IAT, the boost request based on load request should be so low ( because load is achieved easily when it's cold) that your bypass should open a little bit and then limiting boost.
    What was your IAT on the P3 gauge ?
    You could just re test after quite heating your car with 4-5 hard pulls + idling. Boost in this case might be greater.

    BR

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  8. 02-08-2016 06:48 AM #8
    rtl5009
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    What altitude
    b5 s4 built bottom stg3 on E - Sold- Never felt happier
    c8 a6 allroad
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  9. 02-08-2016 06:54 AM #9
    GRUMPY-S4
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    Quote Originally Posted by rtl5009 View Post
    What altitude
    ~450
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  10. 02-08-2016 07:54 AM #10
    bhvrdr
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    Quote Originally Posted by GRUMPY-S4 View Post
    Read from my P3 gauge.
    Did you run the vacuum line or are you reading from the OBD connection? If it is the OBD connection that is the requested boost reading and not necessarily accurate at all although your actual boost will not be higher that the requested. You'd want to log actual, requested, and bypass for boost.

    Mike

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  12. 02-08-2016 07:55 AM #11
    GRUMPY-S4
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    Quote Originally Posted by bhvrdr View Post
    Did you run the vacuum line or are you reading from the OBD connection? If it is the OBD connection that is the requested boost reading and not necessarily accurate at all although your actual boost will not be higher that the requested. You'd want to log actual, requested, and bypass for boost.

    Mike
    Vacuum line into the optional boost sensor for the P3. Using the ECS boost tap
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  13. 02-08-2016 08:58 AM #12
    bhvrdr
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    Perfect. Thats the way to go. Your boost can obviously vary based on ambient conditions (boost targets are based on load). If you want to see if your boost is max it can be just log spec/actual and bypass. If the bypass is staying closed, thats all you're going to get.

    mike

    2018 Audi S5
    12.72 @ 108.85mph - 93 octane - +1565DA - Bone Stock
    11.68 @ 117mph - e30 octane - (-945DA) - jb4 only

    2013 Audi S5 DSG - Unitronic ECU & 034 TCU, 3.17pr
    11.07 at 123.62mph - draggy - 93 octane - (-407ft DA)
    Gone-
    '10 A4 Avant - '13 S5 #1 -- '16 A6 -- '15 S4 -- '09 A4 -- '04 S4 -- '06 A4 -- '03 A4 -- '00 A4
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  14. 02-08-2016 09:02 AM #13
    GRUMPY-S4
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    I will log it soon to compare
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  15. 02-08-2016 11:19 AM #14
    jo2011
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    Just wondering what is the boost in a stock S4?
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