problem after LT's, ORY
 

now seems like under low rpms my car will miss, stutter and backfire....could this be a possible 02 sensor problem or something?

btw, i deleted all the EGR and air stuff...dont know if this could be the prob?

Did you replace your plugs when you did the LT install? TR5's?

Nope kept the stock plugs...I got the TR6's layin around but not planning on goin with nitrous anytime soon so I just kept the stock ones in...

i had the same problem, took it to a maechanic and scanned the codes, told me #6 plug was shot. Thru in a new plug and now all is well. Not hard to crack a plug when your crammin the headers in there. Check the plugs first! good luck

+2 check plugs and wires first...... I had a cyl miss and could only tell under low rpms..... drove fine up top....

aight ill try that...thanx guys

Check for cracked plugs. Are the headers painted? I know I was told that Pacesetter painted headers were bad about peeling on the inside and messing up O2 sensors.

i had this same problem...i replaced my plugs and put on some MSD wires and the problem didn't go away...I spent a month checking and rechecking everything...took my intake back out (LS6 swap) and checked the vaccum lines and gaskets....took the spark plugs twice and checked them...and I couldn't find the problem. checked my spark plugs this weekend again and found cracks in 2 of my plugs....i never saw them before but my hands were a little dirty and with the dirt and grease on the plugs i went to wipe them off and the dirt showed up in the cracks of the plugs. i also noticed that one of my wires was pretty black around where it connects to the plug....so I bought some new spark plugs and OEM wires and now she pulls hard with no problems. So I would most definately check/replace your plugs and possibly wires.

And IMO do not buy MSD wires....the fitment was horrible. The boots for the spark plugs seemed a little too long and a couple of them wanted to touch my headers.