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: I am considering purchasing a catback exhaust for my 2+2NA. But I don't have my ECU upgraded can I still operate properly. Also do you really get your bang for the buck on a ECU upgrade for an NA. Is it worth or does it just help benefit other mods. Yeah, it's not a problem to run a catback exhaust with the stock ECU. A lot of people do the intake & exhaust before the ECU. Some say it's not worth it, some say it is. For me, .2 seconds and 2 mph (on an NA) was a pretty decent quarter mile time reduction for a little over $500.
Later, Phuong
 Rice Land
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