Z1 Motorsport HR highflow cats
 

sold

High flow cats
 

Pm'ed you

Hey man did you like the Z1 cats? Good fitment? If only there were DE cats I would buy these off you in a heart beat, great price. Considering buying a set from Z1 but haven't found any reviews. GLWS!

I have these hfcs for my DE g35 coupe. They are pretty good quality and no CEL for me. You should expect an increase of sound and performance like any other hfcs. I have them with my invidia gemini exhaust and it made the sound more throatier and more loud, but no drone. I havent had any problems at all with them, and my butt dyno did felt a bit of HP increase. Best bang for your buck compared to the other brands. Hope it helps

Thanks a lot bro, since you bought 2 sets you must really like them. Looks like I'll be investing in a set thanks for the feed back brodi. :)

No problem :). And i just bought one set for my DE g35 coupe. Im not the one selling the HR hfcs on this post, if you thought i was. But if i had to buy hfcs again, ill be the z1 again.

ya these are great fitment and highly recommended for a street car. No CEL, no drone and great performance. I was not a big fan of test pipes. My favorite setup was these cats with my motordyne ypipe resonated along with my nismo s tune ypipe back. Right now im running PPE long tubes with custom catted ypipe and tomei titanium single for weight and its just way too loud. buried the sound meter from like 200 yards away 110db+. i had to run my silencer to keep it down.

Sweet thanks, yeah I ran non resonated test pipes with my Bassani it was rasp city and they just stinked

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