Exhaust changes causes problems
 

I just replaced the stock exhaust with B&B and X pipe. The car seems to stumble in low rpm and hesitates a little during acceleration. The car acts like it wants to backfire, but doesn't. Any ideas?:pray

Re: Exhaust changes causes problems
 

Did you remove the factory cats?

Re: Exhaust changes causes problems
 

No. The factory cats are still in place.

Re: Exhaust changes causes problems
 

Hmm well if they were I would suggest a chip change however since they are not Im assuming a stock chip?

Re: Exhaust changes causes problems
 

I have a Chip from Marc Haibeck. It was tuned for a stock setup. Would an exhaust change like this require a reprograming? I figured I wouldn't need a reprogram until I put headers on it.

Re: Exhaust changes causes problems
 

I am getting ready to put headers on. Watson's I think. I have the Haibeck chip and am expecting to have to have it reprogrammed. I have heard I can expect backfiring without cats but that can be programmed out.

So far:
K&N with Open lid
Flowmaster Catback
Haibeck Chip

Once the headers are on (a couple weeks) I'll post the results.

Re: Exhaust changes causes problems
 

I would not think so with the cats one I would ask Marc if it is his chip

Re: Exhaust changes causes problems
 

I believe that mark pulls just a little fuel out of his base prom. . if you got the 3in bandb you could be running just alittle lean . are you using 91 or 93 oct fuel . also remember that this time of year they put more ethanol in the fuel this is a winter thing .

Re: Exhaust changes causes problems
 

also you might want to ck your fuel pressure to see if everything is ok . how long has it been since you changed your fuel filter ? hopes this helps

Re: Exhaust changes causes problems
 

Good idea. I just got the car back in July. How hard is it to change the fuel filter?:icon_scra