Sputtering at Startup

[smcallis]

After putting on the 80mm MAF/Snorkel, LPM, ported runners and Ypipe from the Sho Shop my car doesn't idle well when started from cold. It never stalls but it will spit and sputter a bit until it's warm. If I tromp the gas it takes off fine. After is warm it idles normally. I did go thru the idle teach procedure Scott posted a while back (twice). I cleaned the IAB when I disassembled the manifold. Anyone have ideas what might be causing it?

 

[smcallis]

Now that I read BeatDaSHO's post, it sounds similar. I too just replaced the plugs, wires, and plug well seals.

 

[BeatDaSHO]

lol. yes. someone else with my problem.

Greg

 

[sdpatt]

Try it without the LPM, then with the original MAF sensor to see if the problem clears. It could be running overly rich when cold or there could be a weak spark or spark leak.

 

[smcallis]

Wont it throw a code if I remove the LPM with the 80mm MAF?