Kinger

Im a new g owner I have a g37x, I was wondering if anyone on here had much knowledge about high flow cats. I had a couple questions like if the coupe aftermarket cats would fit or not. Also I was wondering if anyone has any positive experiences with a certain pair of HFC's, I was reading about the Berk's and they seemed fine, was just wondering if there's something else there maybe better and/or cheaper since these ones are like 660 plus tax.
link for the cats I was looking at: https://www.vividracing.com/-p-47179...SABEgJm_fD_BwE

ryanwhite74115

I have the z1 high flow cats. Fitment was fine. However, they are basically test pipes and have subsequently inserted SIGNIFICANT rasp. In hindsight I would have done a 300 cell vs 100 cell cat. I would advise against the z1 for that issue.

Kinger

Youre saying the 100 cell has too much rasp? I looked at them not sure if i should backorder or not but a nice little rasp wouldn’t be that bad at all im basically just trying to get something to pair with my axleback. Honestly i might just have to wait for them to come back in stock. Let me know if you have a better idea though thx

ryanwhite74115

Fast Intentions is supposed to be really good but they take 2-3 months to make and do not have the support bracket. Motordyne also makes a quality unit.

Kinger

alright think im gonna go with the fast intentions thanks 🙏