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Wont rev past 2k under light throttle

Discussion in 'ECU's, Electronics, and Tuning' started by EKJOE, May 22, 2009.

  1. EKJOE

    EKJOE New Member

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    Hey guys,
    I know this is a tuning issue. Im running a fully build LSV with a p72 and s300.This happens under light throttle in any gear....Like,Pulling slowly out of a parking lot...If I creep up to 2k as soon as it gets there it seems like fuel cuts out and it decelerates until I step harder on the pedal and it then jerks and revs past 2k.

    Im running a usdm GSR basemap, with 310 injectors and no CEL codes are present.

    Has anyone experienced this? I saw this same problem with a LS swap in an EK running the wrong ECU....as soon as he put the right ECU in, it stopped doing it.

    This is driving me nuts!
     
  2. INJEN78

    INJEN78 HS LEGEND

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    you might be dumping too much fuel and when its not bein burned quick enough its bogging down..you should rlly tune for this setup..especially when running aftermarket injectors...
    atleast get a basemap for your setup
     
  3. EKJOE

    EKJOE New Member

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    First of all I am running rich, Im trying to learn the s300 as best as I can until my tune date arrives...Which is the 22nd of this month, Long way away.

    The car does the same thing when I tune the low speed/low rpm fuel tables and get my AFR to 14 - 14.7 in open loop. When I put it back in closed loop the AFR gets real searching and never seems to find its home. And when I shut the car off and let it cool all the way down and re-start the F-IN AFR goes right back to 11's and 12's.

    I did bypass the purge solenoid and thought that may have been the problem but when I put it back in, The motor was still doing the same thing.

    Im pretty stumped as to what could be causing it....I am running an aftermarket Blox 66mm TB also.
     
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