B18B_EJ1

I just finished swapping in a ls into my ej1, its a stock ls on 14psi. When i do a cold start it idles and runs fine, after about 3-5min it begins to idle rough and stall out. If I give it gas it does not stall and runs great above 1000rpms. My fuel pump is fine, replace dizzy, and all my grounds are hooked up. I don't think i have a vacuum leak. I plugged in all the wires in the right spot and it is not throwing any codes. I tried to drive it and it is gutless and just stalls out even when i floor it.

Any ideas what it could be?

d15bvtechatch

iTrader: (2)

what is your tuning setup? could be tune that is written wrong for sensing ECT.

jbpnoman

Check your timing, and verify what ECU and tune you're using.

grumblemarc

iTrader: (4)

Total lack of info for a turbocharged car with issues.

Basemapped or tuned? MAP sensor stock? Describe FULL setup and not just "14PSI" because that doesn't tell us squat.

B18B_EJ1

I will check the timing again.
It is a chipped p75 Tuned on crome pro. Im using a walbro 255, 450 Dsm injectors, GM 3 bar map sensor, New inline fuel filter, Turbonetics T3/T4, Precision 39mm wastegate, Ramhorn, 3in DP, rebuilt stock ls.

jbpnoman

Definitely recheck your timing, but it's also possible the tune isn't correct for your setup.

grumblemarc

iTrader: (4)

Is the tune for the LS or the previous engine?