Exhaust question for those w/ 09-10 5-speed coupes..

[Red Jay 918]

alright, so the stock exhaust on the 09-10 5 speed equipped coupes is already a bit louder and deeper than the normal exhausts on the sedans as we know. my question is has anyone ever experienced w/ putting in a straight pipe in place of the mid muffler/resonator before the rear suspension? just a random thought i got. me personally, i'm just waiting for FSWERKS to give out some coupon codes so i can get the stealth exhaust for a bit cheaper than $449..

[Kipp]

haven't tried it, but logically it would make sense that you would get a small (1-2hp) power gain and a louder sound. that said though, the factory exhaust is 2.25" and has a fairly restrictive flow compared to aftermarket 2.5" piping and better flowing (and sounding) resonators/mufflers.


unless you can do all the work yourself (cutting, fab work, welding) to put in a straight pipe, you're going to get the best bang for the buck with an aftermarket bolt on system. having a shop fab and weld in a straight pipe could easily run $200 or more for something with small results and a potential sound you may not like.


just my .02, but stick it out for the stealth.

[09vistabluecoupe]

Originally Posted by Kipp

haven't tried it, but logically it would make sense that you would get a small (1-2hp) power gain and a louder sound. that said though, the factory exhaust is 2.25" and has a fairly restrictive flow compared to aftermarket 2.5" piping and better flowing (and sounding) resonators/mufflers.


unless you can do all the work yourself (cutting, fab work, welding) to put in a straight pipe, you're going to get the best bang for the buck with an aftermarket bolt on system. having a shop fab and weld in a straight pipe could easily run $200 or more for something with small results and a potential sound you may not like.


just my .02, but stick it out for the stealth.

I think the stock piping is only 1 7/8 in.

[focusZX505]

stock is 1 7/8th not 2.25. doing what you are planning will not gain any HP don't wanna be a dick but please don't cheap out and think youll gain any HP do it right or don't do it at all

[Red Jay 918]

Originally Posted by focusZX505

stock is 1 7/8th not 2.25. doing what you are planning will not gain any HP don't wanna be a dick but please don't cheap out and think youll gain any HP do it right or don't do it at all

oh i'm not thinking of doing it. just a random thought i got at the time. if i were to do it it'd only be for sound, not performance.

[andrewsfm]

I've got an '08 SES with a straight pipe.
Because it's a dual cat, the sound isn't over the top, or as loud as you would think.
Sounds just about right to me now, but took a while to get used to cause I never had anything but stock on previous cars.