97targa

Just did a '96 Cobra dohc swap in my 97gt. I'm running tr6's gapped at .035" which is one step colder and closer gap than factory. I installed a set of BBK LT headers with the motor swap. The plugs are all white. Could the LT's be the culprit of my problem? Do I need a tune with LT headers? I just bought BR7es's for now which is 2 steps colder to hold me over. What do I do? Thanks

Cornbread01

with just doing a swap i would say i personaly would take it to the dyno just to make sure the a/f is right

97targa

I put in the cobra computer and wiring! It should be good to go. I drove it up and down the highway with no issues.

Cornbread01

are the plugs your running stock for that engine. if not try the stock plugs for the new engine at the correct gap

97targa

No, they are one step colder and gapped smaller!

2000GT4.6

+1, just for safetys sake throw it on a dyno/a/f meter. Anything could be happening, espcially with a brand new motor install, cobra computer or not.

wwmost

i had longtubes with stock tune, stock plugs and i was fine on my 2v. im also running tr6's now and im still fine but i do have a tune