Subaru Impreza WRX STI Forums: IWSTI.com - View Single Post - Exhaust Quiet -- stock like sound level -- turbo back exhaust
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Old 02-18-18, 07:25 PM  
ShinjiML
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Default Re: Quiet -- stock like sound level -- turbo back exhaust

FWIW stock catback is good up to almost 400 whp (dynojet), costs ~10-15 whp.

With an EWG, you can get away with higher power levels before the stock catback becomes a restriction.

Last edited by ShinjiML; 02-18-18 at 07:34 PM.
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