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Old 08-16-2003, 10:18 PM   #1
Zullard
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Member#: 39948
Join Date: Jul 2003
Location: PA
Vehicle:
2004 WRX STi
Silver

Default Turbo Backs

What have people been going with on their STi, I am somewhat against TXS, at least for the turbo back. I would consider their downpipe with a different Cat-back their turbo back is too expensive and the downpipe seems to be the best part of the system. I may go with their downpipe but am leaning towards Perrin at the moment. With a cat-back like Apexi GT Spec 85mm piping draws me a bit. Or the Greddy Evo if I want to be quieter. Another thing I am considering is the APS 3.5inch turbo back but it would be too loud I assume. Any one have experience with any of them exhausts on an STi, I have seen most of these on WRX's but not STi's. Also interested in a header, anyone replaced it yet? Well thanks for responces in advance and sorry if this is a double thread.
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Old 08-16-2003, 11:00 PM   #2
cann
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Join Date: Jul 2001
Location: somewhere out there
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3.5" piping is way too big for the STI
u would want to go with anything between 76mm to 80mm as the optimal output of usable power
not losing too much torque for the benefit of the power at the high rpm
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Old 08-16-2003, 11:40 PM   #3
Janq
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Quote:
Originally posted by cann
3.5" piping is way too big for the STI
u would want to go with anything between 76mm to 80mm as the optimal output of usable power
not losing too much torque for the benefit of the power at the high rpm
In real life on streets & highways torque rules.

- Janq
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