which one do you think will give more hp

http://www.rx7store.net/product_p/rx8storerx8.htm

http://www.rx7store.net/product_p/greddysprx8.htm

 

GREDDY if your N/A

 

If your NA go for sound not HP

 

I put on the Racing Beat Rev8 and a dual resonated, cat delete, mid-pipe;
I got 42 HP out of that!

But, mine was cat/exhaust bound.
Pettit S/C.....

I seriously went from 254 RWHP to 296 RWHP with the exhaust changes.

 

^ +1

Every exhaust will only give you about 2-3 hp, so find the one that sounds the best to you and get that one.

 

i think u should go with the hymee mk3 it looks soo good and sounds great!

 

folgers INurCUP catback. honda owners have been using it for years. power gains above 85 whp.

 

+1

anyway back to serious stuff lol. the rumors are that ANY cat-back system on the market will yield no more than 3 maybe 4 horsepower regardless of their claims. if you upgrade to a mid-pipe or highflow cat your gains could be a little higher but consider this: you have a naturally aspirated 1.3L engine that already puts out 230 horsepower at the crank...what more do you want from it? i'm not sure of the gains you get when you force feed an RX8 put they should be much higher than naturally aspirated (duh)