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Hi guys I just recently bought a '10 evo x and it currently has a ams downpipe. Everything else is stock. I was wondering if the stock tune will be ok with that or should I run a ots tune from cobb? Also I was thinking of adding a cobb intake and a test pipe on stock exhaust will I be able to use the cobb stage 2 tune with that? From my understanding the boost pill is already removed by previous owner.

Thanks for the help everyone.
 

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If all you added or someone added was a downpipe, I wouldn't worry about it. You aren't going to be able to get that much more exhaust through your stock cat... I think the numbers have been in the 10hp range, give or take.
 

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thanks, what if I change the cat out and tune it with a stage 2 tune will that wake it up more
Your intake, cat, and catback are your biggest restrictions...so yes. The DP, I wish I would have saved the money.
 
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