2018 Auto Performance Mod Question

[overd0sed]

Hey guys, I currently have a 2018 auto and I'm going to add a mishimoto intercooler, cobb stage 1 tune and catless downpipe as these three will increase performance. Do I need a new exhaust system(with downpipe) to see maximum gains or is the stock exhaust(with downpipe) enough to see gains. Thanks for helping!

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[lizardrko]

the stock downpipe is the largest cause of restriction in our exaust systems. You will experience more gains with a tune + downpipe than a tune + catback exhaust. But if you want absolute maximum gains you want a full turbo back exhaust (DP + catback). But since u are using a canned tune from cobb, u should run the required mods as per what the tune calls for.