I'm in the process of obtaining a used RB header and precat. Here's my question: how different is the rb y-pipe and the stock y-pipe? on the rb website, it says theirs is slightly larger in diameter, but it doesn't specify. they also said their y-pipe is the same as the tII, so how different are they? and would it be worth it to try and find a used tII y-pipe? I've read that it's usually best to have an all-rb system for sound and performance. how waranted are these claims?

thats a couple of good questions. ypipe: i know when you buy a new one from mazda you always get a turbo one, the rb one is supposed to be bigger, but it still bolts on so it cant be hugely bigger. so i dont think your y pipe is gonna be all that different from a factory one.



mike

go single ehaust. looks much better.

Personally I don't like the single on the FC. Just looks misbalanced, especially since there's an extra hump with no muffler in it. Maybe that's just me, but I think double looks much better.

i dont dislike the single, but the fc is the only rx7 to have duals and i felt (this exhaust anyways) to keep the uniquely fc thing



mike

I feel the same way, with the gaping hole...plus it's easier to keep it dual, no extra work to do...what's the recommended muffler with this setup?

additionally, I'm under the impression that a racing beat header, with a presilencer welded on, will replace the cats...is this just for the precats, or all? or am I way off base?

the rb header and presilencer replace everything to the y pipe



mike

sweet...I love not having emissions checks

i can only dream about that, ok well i can scheme too



mike

Racing Beat mufflers, the sound of the racing beat header with stock exaust is similar to a nasty sounding dirt bike.

is there a cheaper option that would sound just as good as rb, or at least not horrible as stock? I don't like the idea of spending more on mufflers alone than on anything else

well if it makes you feel any better the racing beat mufflers are half the price of stock ones



mike

oh, my



I put a want ad in the proper section, hopefully something will come up...I'm all about the discounts...plus, if it's cheaper, I can convince my wife that it's something I need, not something I want

would it sound like ass if I got an off-the-shelf one from discount auto parts or pep boys? i'm more interested in power than good looks or nice tone

exhaust leak worked for me

well it will sound like ass but thats what a rotary sounds like, so its cool



mike

good to know

the RB mufflers are full stainless..(i think) so they will be the last mufflers you will buy...if not get stainless mufflers (tell your wife that they give the car better gas milage so you are saving money in the long run) https://www.nopistons.com/forums/pub...#>/biggrin.png

how hard is it, to go and steal some good mufflers of some others peoples cars, j/p

RB says everyone, straight pipes says me