7969

iTrader: (2)

Hi, I am just about done with my BMW swap but the engine is starting to drive me crazy. It is a 05 L33 with Camaro intake,injectors,TB,EPS cam,headers,T56 ect. It has a Chevy Thunder harness/ecu, new IAC,MAP,TPS....53psi fuel pressure at the rail.
It will start but the idle is a little low and hunting, sometimes it will take throttle a couple times but most time it will only bog and dies if you hold the throttle open. Anyone have ANY idea what is going on?????
Thanks inadvance!!!!

chrysler kid

iTrader: (14)

Mass air sensor or intake air temperature sensor. Could also be 02 sensor

psiconversion

iTrader: (5)

Stock throttle body? Did you do an IAC relearn and set the TPS?

Jon
PSI

7969

iTrader: (2)

Yes did idle learn, my scanner will not show the TPS real time but I had a new one and installed it and a new MAF...no difference.

Boomstick

iTrader: (1)

Injectors all spraying? I've done two swaps and both times I had clogged or non-functional injectors. See if it will run on propane or starting fluid any better... Lean O2's and maxed fuel trims would be a good indicator of this.

7969

iTrader: (2)

BUMP Fixed it with a base tune ecu from a guy on ebay. The car starts and idles and revs like it should. Just a little fyi NEVER buy anything form Leonard Sparks (aka Chevythunder.com) he will be right beside you till you have a problem the he tells you he "cant hold your hand" and that "you are on your own".

aknovaman

iTrader: (7)

Leonard site says he does harness work and not custom programming. Not sure how your non stock configuration can lead to it being his fault.

jmilz28

iTrader: (13)

Agree. You mix and match like this? That = custom programming. Read carefully before bad-mouthing.

7969

iTrader: (2)

Then why does the car work with the new ecu that just has a basic 5.3/6speed "get it started" tune? It did not work with the one he tuned for all the specs that he asked for? 5.3-6spd-gear-tires size-what maf,tps, iac, tb, map ect I had (sounds like at least simi custom tune). Just all lead me to beleve the ecu is bad and he told me it was up to me to figure it out......................