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Old 05-28-2019, 04:54 PM   #32
eastendraceshop
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Drives: '13 Scion FR-S & '17 Toyota 86
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I ran catless Tomei UEL's on my dd FRS, with a hooker catless/resonated front pipe, for about 2 years and over 40k miles. I ran E85 most of the time and didn't notice any smells when sitting inside the car. I did notice the smell of E85 whenever I did a cold start and stood outside of the car. I also didn't notice any funny smells when I was on 91.

With a tune and the UEL headers, the torque dip was eliminated and the car was much more fun to drive. However, I hated the drone so much that I put the stock exhaust back on. I couldn't have a conversation in the car without yelling, lol. There are a few cat-back exhaust options that will let you run a catless setup without the drone, like the ARK Grip, Corsa, Invidia Q300.

I doubt that you'll pass emissions testing when running a catless setup w/regular pump gas, but you might be able to pass with E85.

-Sam
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