Thinking of putting test pipes on my car for awhile..

[s4one]

Thinking of two options right now.

1. Top Speed PRO 1 Performance exhaust (ebay)
2. Obtain a stock xpipe/cat, cut the cats off for test pipes and cut the xpipe resonators all of them.

I want to get some sound just for the heck of it, i don't plan to do it for long term. Have a few trackdays coming up as well and would like the car to sound more aggressive. Anyone have any experience with the topspeed pipes? Their 14 day return policy is pretty good if fitment is off.

plan to code the car to remove the o2 sensors so the CEL doesn't come on. i dont need a tune for this right?

Thanks

[spool twice]

If u can code the rear O2 sensors with a different OEM tune that doesn't check them, maybe.

But if not, Evolve has a nice stage 2 and test pipe group buy at the moment, give imran@evolve or paul@evolve a shout for details.

[tjsabec]

Originally Posted by s4one

Thinking of two options right now.

1. Top Speed PRO 1 Performance exhaust (ebay)
2. Obtain a stock xpipe/cat, cut the cats off for test pipes and cut the xpipe resonators all of them.

I want to get some sound just for the heck of it, i don't plan to do it for long term. Have a few trackdays coming up as well and would like the car to sound more aggressive. Anyone have any experience with the topspeed pipes? Their 14 day return policy is pretty good if fitment is off.

plan to code the car to remove the o2 sensors so the CEL doesn't come on. i dont need a tune for this right?

Thanks

The Akrapovic Delete R module will eliminate the CEL. $400 new, usually $225 used. Someone could definitely code it out for you, I am just not sure what they'd charge you. Deleting the primary cats causes a significant change in back pressure. I thought it was worth it to buy a tune. I got a combo test pipe / tune with a discount from BPM and am very happy so far (although I am not really driving the car currently due to weather conditions.)

[BPM]

Originally Posted by spool twice

If u can code the rear O2 sensors with a different OEM tune that doesn't check them, maybe.

But if not, Evolve has a nice stage 2 and test pipe group buy at the moment, give imran@evolve or paul@evolve a shout for details.

There is no oem software that does this (although for other M models there is). We can however, modify the oem software and just make that one change. For locals it's easy b/c no tuning cable is required. Another option is to mail the dme with same day turn around time.