1STGEN68-2000SS

Track only car 1999 Firebird
I have the Pacesetters long tubes with a non cat y pipe and Borla exhaust system. I am thinking about removing the system from the headers back ,installing an x pipe with split flow race mufflers or just put the mufflers on the headers. Has anyone done a dyno test before and after installing a true x pipe.
Alan

Hambone 7

theres a sticky at the top of the page. read through it.

ddelallata

iTrader: (2)

I'm running the same setup as you are, but the rasp was unbearable so I put a Borla XR-1 muffler in the I-pipe to quiet things down a bit.

5POINT7

For race only. I'd go 4" Mufflex system.

1STGEN68-2000SS

It's amazing what you can learn by reading the top.
Thanks Alan

cyphur

iTrader: (10)

i would not skip the x-pipe idea, you'll lose torque.

99SeanWS6

iTrader: (8)

I've got Pacesetter LTs, ORY, and Flowmaster catback but I'm getting a cutout installed soon

Slacker

I have Pacesetter LT's, ORY (with a flowmaster merge), Hooker catback. No rasp & sound good with the cam.