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Custom center-exit 3" exhaust on 08 STi

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21K views 22 replies 20 participants last post by  busyychild  
#1 ·
Just thought I'd share my latest project, in case any of you ever were curious what a center-exit exhaust would look like on an STi hatch. I have always been fond of center exhausts, like the R32, Mini, 2002, etc and was equally not fond of the fake quad-tip exhaust that came on my STi. That, plus I've got an idea in mind to turn the non-functional diffuser thing molded into the stock bumper into something that could potentially work, or at least smooth out the airflow from under the car, and using a center exit exhaust gives me a bit more room to play with that down the road, plus I just really like the symmetry of it.

I know I'll probably get flamed for this since its so different, but just thought I'd put it out there. On to the pics!

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#20 ·
I think a single exit exhaust is the best route for performance gains (both power gains and weight savings). However, am not feeling the center alignment. Did you do any type of dyno analysis? How loud is it?
+1 on dyno and volume

+1 on square tip, or maybe even something like, dare I saw it...the veloster......
Or 996/7 GT3

I like the originality. Cant wait to see what you come up with for a diffuser.
Very interested to see with the diffuser. Its kinda just hanging out there all alone right now.. :(