ok i went to the dyno last week and tuned the car but at the time i had a stock exhaust on my car, last night i just put a DC Sports cat back on was it a waste of money tuning my car, and is my tuning all screwed up now? Is my car going to be slower? Run rich? like whats gonna happen?

 

I jsut posted in the integra forum, and i dont think it will hurt at all since the little differences you get with exhausts.

 

everyone one i talk to around here says it was a complete waste...

 

well is it running better than before you got it tuned? to tune a car after every mod is expensive but you shouldn't tune it if you KNOW you are going to add another mod.

 

the thing i'm worried about is it running too lean and going to ruin my motor?

 

Swapping out exhaust systems wont change your tune dramatically, but before you run and get another tune i would get all the mods that you plan on doing and install. I don't know about your tuner but most charge $100 per hour for a re-tune.

 

my guy is 75 an hour

 

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If this guy is good, thats a great price.