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Average rating based on 5 review(s)

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I upgraded from OEM cats to these as part of Z1's level 1 power pack - I made all the upgrades at the same time, so I can only say there was a huge improvement in acceleration and response after upgrading these, Z1's cold air intake (DE), and getting a tune. There is no rasp with these pipes. They make a pleasant hushing noise as air accelerates through them. 5/5, highly recommend. Also note, if you research these online, you'll find dyno gains over ordinary test pipes. These pipes are worth the extra money.

Rated by Devin Simmerson

I installed these on my ladies G35 due to cat failure and she loves the exhaust note and performance given.

Rated by John Parham

Choosing which test pipes to go for was just as hard as taking my midterms this week. Nevertheless, after ordering and getting these bad boys installed I was happier than when I walked out my classrooms after finishing them. The noise of the car overall did increase by a noticeable difference and I also noticed a difference in the performance as well. I am not sure whether or not it is the placebo affect, but I f****** love these things regardless. I honestly don't think there will be much of a difference in performance boost/noise levels when it comes to choosing between test pipes, but if you do happen to go for these...YOU WON'T BE DISAPPOINTED! The quality and craftsmanship is spot on and the way it delivers what it promises is just right. Thank you! 4/5 Bolt ons complete, now on to the final stage with the help of Z1.

Rated by Luis Flores

Cant wait to install these! Z1 took great care in packaging the product zero damage during shipping and it came fast! Within 3-4 days! Will be a great addition to my Invidia Gemini catback system! Thanks Z1 for keeping me a happy returning customer!

Rated by Cody Creekmur

These things fit perfectly with my ark grip catback. Only problem I had was one of the bolts that came with the art pipes were bad and didn't have enough thread on the bolt so the nut couldn't go all the way down the bolt to tighten up. Would also recommend ordering new gaskets because the gaskets that come with the art pipes are pretty terrible looking.

Rated by Junko Suzuki
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