do i need a tune for test pipes? all i have is an exhaust and the rest of the car is stock was wonder if they have test pipes without a tune

 

You would be unwise. You will be running much leaner "straight piped."

 

You don't NEED a tune but some test pipes will throw a service engine light. A tune is very beneficial to even a stock vehicle though so it's something you should still consider. Most folks wait until they have installed test pipes/hfc, cat back exhaust, plenum spacer, and mrev2 if it's a rev-up motor. That way you aren't basically "wasting" money on each tune along the way.

 

If you do get a service engine light a set of long non-foulers can also help trick the ECU into not throwing a code.

 

thats what i was thinking i dont want to get a tune till i go sc but i can't stop and exhaust leak right after the cats so i thought maybe test pipes will help stop it

 

Have a muffler shop look at it, the flange might be damaged but those guys that work on exhaust systems for a living will spot things that you might not. I recommend a local reputable shop not necessarily a Midas unless they have employees that have worked there for a long time.

 

the exhaust i have is aam 3" true duals

 

If you consider the cost between test pipes and all the PIA issues involved, a visit to your local muffler shop seems like the best option!
Gary

 

im going to try and put new gaskets in it and see if i can get it to work

 

Shop for a muffler shop that has the equipmrnt to smoke test the exhaust. Only true way to ensure zero leaks.

 

Don't mean to derail the thread but it saves another thread being made....

I understand the idea of better breathing leading to leaner conditions, but since decatting and installing a catback there's been more of a petrol smell noticed at standstill/backing up/coming to a stop. Wouldn't that indicate richness and unburnt fuel? Also the exhaust tips have some carbon on them, nothing excessive like a diesel but a 'healthy' amount.

Unless when you talk about leaning out, that's only for certain rev ranges. My o2 sensors still work good and no engine light was ever tripped. Been running this way for about 15,000 miles.

 

OT, but I wonder if anyone has ever installed all breather mods and tuned it at once. I wonder how awesome the difference would be from dead stock to full bolt on+tune. Anyone ever heard of anyone doing this?

 

so i would be okay putting test pipes on. ill need test pipes when i go sc