So, i am looking to get the RB Headers for my GXL and i see 2 options the RB 16128 and RB 16129. The descriptions are confusing my head. Also do i have to get presilencer to attach it to my Borla Catback?
http://www.mazdatrix.com/r-ex86nt.htm

 

The first one has the pipe on it for the 6-port actuators, the second does not. I don't think you want either of those if you aren't going with a true duel exhaust, notice they both have duel outlets. I think this is more of what you are looking for. http://www.racingbeat.com/RX7-1986-1...ers/16130.html

 

wow.,i was damn wrong..,.,thanks a lot for pointing that out. so i still need the the presilencer,.,. right?

 

You'll probably need something. That header is just as it sells as. It's just a header so the piping stops pretty much as soon as it leaves the engine bay. If your catback starts where the old cat ends, you'll need something to go in between the two.

 

The RB Presilencer will get you to the Borla catback. [The presilencer is longer than the stock cat, but when it's attached to the RB Header or precat eliminator pipe the back end is at the same spot as the back of the stock cat]

Which means if you need to pass DEQ every couple years you'll either need an aftermarket car or to swap your stock manifold/cats back on for a few hrs.

 

this makes a lot of sence. thanks a lot for th help people. i hope it wont be too loud..,.,

 

oops *cat

Naww, the Borla isn't too loud, just a bit more than a RB catback.