I installed a set of coated Hooker Longtubes and a coated y-pipe over the weekend. I got them for $200 barely used! I also bought some 13111 Bosch O2 sensors (almost as much as the damn headers). Install went smoothly but I have one concern.

The car drives great but every once in a while the RPMs will drop very low at idle (300) then sort of jump back up to normal. Other than that the car drives great. It doesnt miss or hesitate upon acceleration. I would like to know if this is normal without a tune or should I start diagnosing the problem.

 

I am pretty sure the headers are are not going to cause that to happen...you must of missed a plug or something, just go over everything and make sure that it all got plugged back in etc...

 

doesnt sound like something the headers would do. go back and check all the plug wires and make sure u didnt crack the porceliln on the spark plugs

 

Maybe it's the pcm still calibrating????

 

Alright I will check everything tomorrow. Those MSD wires arent very assuring when connecting them up. Maybe thats the problem. I took all of the plugs out when installing the headers just to be sure I wouldnt crack one so I dont think that is the case.

 

my car did the same thing after installing my longtubes. It only happened when I was running open headers. After I got my true duals, it stopped doing it.

 

It needs to be tuned, sound like too much fuel flooding the injectors and causing it to almost stall.

 

I should be getting it tuned within the next month or so.

 

that would be the first thing i would check is to make sure all plug wires are all the wayon.