sti exhaust

would a stock sti muffler or axle back exhaust bolt right up on my 98 legacy? basically wanna get little louder but nothing mind blowing here

nope, and it will barely be louder at all once you got it to line up.

 

grab UEL headers for rumble and a decent aftermarket muffler like vibrant or SPT to define it

wont i need to weld an aftermarket muffler? really tryin to find a bolt on, is that even possible?

yeah, SPT makes bolt-on aftermarket cat-backs for the second gens here

 

only the ones from japan say SPT on them, the US made ones say 2.5gt but its the same

sweet thanks, that link looks exactly like stock

yeah, but its a 4" outlet lol

website for the uel's?

speedyracer

 

 

make sure to get 50'x2" coil of exhaust wrap and some stainless steel zipties to nullify the lifter tick

I have answered the WRX/STi exhaust question a million and three times... And it's not worth it.

I have answered the WRX/STi exhaust question a million and three times... And it's not worth it.

 

no gains? same sound level? why not worth it?

well for one, the catback portion is way bigger than stock so you end up losing back pressure.. which hurts power/mpg (barely, but still)

 

and its about .5dB louder, you may not even notice a difference

 

so essentially you'd end up spending ~$50+ on an exhaust tip that says wrx or sti

Or you can just get a borla muffler or whatever you want with a offset/center inlet/outlet, hacksaw and hack off the muffler right at the stock muffler inlet, use a muffler clamp and tighten that baby on. If concerned, you can use a roll of universal hanger wrap at any auto parts store or drive it to a shop to have them weld on a hanger bracket for dirt cheap.

aftermarket mufflers without aftermarket headers sound like shit.

 

Buy UELs and even your stock setup beyond that will purr louder

 

if not, youll just sound like every other 4 cylinder car with a fart can, just barely deeper.

 

buy UELs headers

no gains? same sound level? why not worth it?

 

With the WRX catback, there's not much more audible noise than a stock exhaust. It can't be heard while driving. The STi exhaust is noticeable but the tone is very limited on throttle and sounds meh

 

It basically sounds like this:

 

[ame=http://www.youtube.com/watch?v=LLM-matbSSE]Stock STI exhaust - YouTube[/ame]

 

I'd say there are absolutely no gains from it. Throttle response is much better, but there seamed to be part throttle power loss.

 

well for one, the catback portion is way bigger than stock so you end up losing back pressure.. which hurts power/mpg (barely, but still)

 

Loss of back pressure only hurts part throttle power. Overall power can be gained. It can shift the power band (very minutely) towards the upper RPM range. Throttle response increases with larger exhaust systems..

yeah but how often are you putting a stock 2.5gt to redline?

 

power gains shouldnt even be discussed really, especially with starting on exhaust as the first upgrade

Not too often, but I was only explaining the basics of how a larger exhaust system affects how the motor makes power. But yes, it really doesn't matter on a engine that doesn't make a lot of power in the first place... With any "upgrade..."