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  1. 04-13-2018 04:49 PM #1
    elijahallen
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    Autotech HPFP installed with bad results...

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    I recently had the Autotech HPFP upgrade installed and logs are showing 20,000+ less actual rail fuel pressure then stock. Anyone else running this and have better luck?
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  2. 04-14-2018 07:08 AM #2
    jimrobbington
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    It must clearly be defective or been installed wrong. Never heard anyone with this issue before.

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  3. 04-14-2018 07:28 AM #3
    SGR
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    Sorry to reply with another question, but what is an average max fuel rail pressure at WOT at 6800 or 7200 rpm for a stock fuel pump setup?


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  4. 04-14-2018 08:05 AM #4
    elijahallen
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    Quote Originally Posted by SGR View Post
    Sorry to reply with another question, but what is an average max fuel rail pressure at WOT at 6800 or 7200 rpm for a stock fuel pump setup?


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    I'm not sure but I also have GIAC LPFP upgrade.
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  5. 04-14-2018 08:06 AM #5
    elijahallen
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    Quote Originally Posted by jimrobbington View Post
    It must clearly be defective or been installed wrong. Never heard anyone with this issue before.

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    Is there a way to instal this wrong? Seems pretty straight forward. I would love to see logs of others running this setup to compare, anyone?
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  6. 04-14-2018 08:12 AM #6
    SGR
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    Quote Originally Posted by elijahallen View Post
    I'm not sure but I also have GIAC LPFP upgrade.
    Well, still curious, what was the pressure (hPa I assume?) you were getting before the install?


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  7. 04-14-2018 08:24 AM #7
    SGR
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    I’m seeing 136000-138000 hPa on 30%-ish ethanol blend. I just have the autotech upgrade, no LPFP upgrade.


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  8. 04-14-2018 08:34 AM #8
    grovlet
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    I swear Lou posted that there was an issue with the return flow not being able to keep up on - so the pump would suck the bucket dry - and then fuel pressure would drop - Fix was a small add on pump (IIRC)....

    I tried searching - but had no luck - You may want to PM Lou for specifics?
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  9. 04-14-2018 09:36 AM #9
    redlinerex
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    I believe somebody else had a similar issue a couple years back and it was also the Autotech HPFP upgrade. 99% sure it was Grumpy and after Autotech sent him a new one, all was good.
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  10. 04-14-2018 02:01 PM #10
    elijahallen
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    Quote Originally Posted by redlinerex View Post
    I believe somebody else had a similar issue a couple years back and it was also the Autotech HPFP upgrade. 99% sure it was Grumpy and after Autotech sent him a new one, all was good.
    Good to know.
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  12. 04-14-2018 02:02 PM #11
    JD S4
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    Quote Originally Posted by redlinerex View Post
    I believe somebody else had a similar issue a couple years back and it was also the Autotech HPFP upgrade. 99% sure it was Grumpy and after Autotech sent him a new one, all was good.
    Hofame has a similar issue and now I have his auto tech. 🤪

    Logs will tell soon


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  13. 04-14-2018 02:02 PM #12
    elijahallen
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    Quote Originally Posted by SGR View Post
    Well, still curious, what was the pressure (hPa I assume?) you were getting before the install?


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    Before the pump I was seeing 117,000 hpa, after I am seeing 95,000
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  14. 04-14-2018 02:05 PM #13
    elijahallen
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    Quote Originally Posted by SGR View Post
    I’m seeing 136000-138000 hPa on 30%-ish ethanol blend. I just have the autotech upgrade, no LPFP upgrade.


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    Thanks, I was hoping to hear what it was supposed to be at. Mine dropped from 117,000 to 95,000 with Autotech added.
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  15. 04-14-2018 02:31 PM #14
    SGR
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    Quote Originally Posted by elijahallen View Post
    Before the pump I was seeing 117,000 hpa, after I am seeing 95,000
    If you’re seeing max of 95 hPa at any given time (i.e., not higher initial pressures at WOT then pressure dropping later in that same WOT pull), then I don’t think that is indicative of the issue of the fuel bucket running out...


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  16. 04-14-2018 02:33 PM #15
    SGR
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    Quote Originally Posted by elijahallen View Post
    Thanks, I was hoping to hear what it was supposed to be at. Mine dropped from 117,000 to 95,000 with Autotech added.
    Np.


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  17. 04-14-2018 03:06 PM #16
    elijahallen
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    Quote Originally Posted by SGR View Post
    If you’re seeing max of 95 hPa at any given time (i.e., not higher initial pressures at WOT then pressure dropping later in that same WOT pull), then I don’t think that is indicative of the issue of the fuel bucket running out...


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    Without the Autotech HPFP at WOT in 4th gear I was seeing requested at 122000 and actual at 117000, now with the new HPFP I am seeing same requested and 95000, I have a track event coming up in a couple weeks and need to get this sorted so I don't lean out on track and blow the motor.
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  18. 04-14-2018 04:32 PM #17
    SGR
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    Quote Originally Posted by elijahallen View Post
    Without the Autotech HPFP at WOT in 4th gear I was seeing requested at 122000 and actual at 117000, now with the new HPFP I am seeing same requested and 95000, I have a track event coming up in a couple weeks and need to get this sorted so I don't lean out on track and blow the motor.
    Have you gotten any codes? In any case, I’d give autotech a call when they next open. I’m sure you’ll get things sorted out soon.


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  19. 04-14-2018 05:21 PM #18
    elijahallen
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    Quote Originally Posted by SGR View Post
    Have you gotten any codes? In any case, I’d give autotech a call when they next open. I’m sure you’ll get things sorted out soon.


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    No codes but I got it installed, drove it home and did some logs to make sure it was worth the $400 lol. The weird part is the car feels faster but that could be because its going lean. Cars are always fastest right before they blow up haha
    2014 Porsche 911 turbo S, 2022 RS3 Uni DP, mid pipes, Racingline Piggyback(SOLD), 2018 RS3 Uni Stage 3 Iroz built motor(SOLD), 2017 Q7 APR stage 2 DP, 2016 Audi Q5 TDI Malone stage 2, 2013 Q5 3.0t DP stage 2(sold), 2016 SQ5 DP stage2 (SOLD) ,2014 Q5 tdi Stage 2(SOLD),2008 Porsche Cayenne S stock(SOLD),2011 B8 S4 DP stage 2+(SOLD),2001 B5 RS4 clone Built motor 600hp(SOLD),3 B5 S4 Avants Stage 3+(SOLD),95 S6 Avant RS2+(SOLD),94 S4 K27 built motor(SOLD),91 Coupe AAN RS2 Conv. Built motor.
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  20. 04-15-2018 12:37 PM #19
    Callandor
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    Can anyone post their hpa with autotech working properly? I'm curious to check mine now.
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  21. 04-15-2018 05:27 PM #20
    SGR
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    Quote Originally Posted by Callandor View Post
    Can anyone post their hpa with autotech working properly? I'm curious to check mine now.
    I did a pull at WOT in second gear earlier today and got got a reading of approx 146000 hPa at around 7100-7200 rpm. Running E30 currently.


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