did a search and really didnt come up with the exact answers i wanted.. either going to go with gotham racing, or n-tech.. anyone have experience with either of these?? also if there are any other types out there that are better hp , and longativity, please post.. thanks in advance.

 

Ive been searching too, but I was thinking of HKS Dragger II or somethin, but ill watch this thread!

 

I have an Ntech. Very pleased with it, a noticeable difference on the butt dyno over stock cat, a lot quieter and less smelly than going just with mp.

 

You might keep an eye on this thread:
https://www.rx7club.com/showthread.p...hreadid=267128

 

I have a Bonez HF cat and I'm very pleased w/ it.

 

I have a Gotham Racing hi flow and love it. It allowed me to pass emmissions and go to 12 PSI with DP, catback, Intake, IC and ECU upgrades.

 

is the difference worth it with the gotham racing? also how long have you had it?

 

What do you mean? Compared to what?

 

sorry i was unclear , compared to the stock cat...

 

Do you have a need for one immediately? If not, I would wait to see what happens with these newer technology cats. Having almost the same flow as a midpipe but being able to retain emissions will be fantastic if they live up to their hype.

Pretty much all of the hi-flo's currently available will give you a noticeable increase over the stock cat, as well as being MUCH lighter.

 

no i am not in need of one right now, your i think i am going to wait , but if they are not as good as it seems, i just want to know whats next best out there..

 

Right now, the 2 most "proven" hi-flo's are the Bonez and the N-Tech. Gotham just started selling their hi-flo so people haven't had them long enough to really give a longevity report.

Also, there are threads of people welding Megaflow (or some company like that) Hi-Flo cats into midpipes which seems to be another cheaper alternative. However, as with Gotham, nobody has had the setup long enough for longevity reports.....

 

right thats something i wanted to know also longativity... i dont want it clogging up in 1k or 2k miles like that pettit. ive seen a few of those welded ones too dont know the name myself. the reason i like the gotham the most is because of the "plug and play" with the airpump and all.

 

Unfortunately, you'll have to wait a while on a longevity report for the Gotham Hi-Flo (I think it's only been around less than a year).

The only other "plug & play" Hi-Flo out there (worth a damn) is the Bonez, but it's quite expensive. However, IMO, it was well worth the money (I'm using one).

 

just throwin in that i have an n-tech, passes inspection and the car runs 12.8@110 on stock turbos

 

anymore imput.....

 

i have the bonez. When i was searching for a HFcat awhile back, i decided to go with the bonez. All i heard was good news from people using that cat, and having the people @ rotary power in south cali also recommend it just sealed the deal

 

Also see, Resonated Midpipe (if you dont mind killing the earth)

 

i would get a midpipe but i cant stand that smell... i have to get some sort of cat.. right now i am waiting on the new metal cats.. but i am leaning towards bonez.. but i would also like to see how gotham racing becomes in the future.

 

What he said.

 

Way too many exhausts to choose from!