Been searching lots of threads about high-flow cats and the feedback seems inconsistent. Aside from the uber-expensive HFC by WORKS, are there any others that absolutely DO NOT throw a check-engine light?

 

AMS' hfc doesn't throw a cel BUT I don't know if it's compatible w/ any other exhausts other than their own.

 

i dident think any of them did

 

I picked up Road Race Engineering's Magnaflow HFC.....after many hard drives, I have not thrown a CEL yet. Its a great piece of work and would recommend it highly.
Great price too

Comes with bolts and 2x 3" gaskets.

 

I've had perrin cat delete with o2 simulator for close to a year now. Only about 5,000 miles on it. But I've done plenty of racing with it and still no SES light.

 

EVOla_VIRUS...thanks for the info. I checked out their website and it looks like their DP and HFC combo are a direct bolt-on for my 3" RS*R ExMag exhaust. Seems like there is a bit of negativity on EvoM about their customer service and shipping practices though. Have you been in their shop before?

Unfortunately we all need a cat for California. It's like a $2k fine if you're pulled over and caught running a catless exhaust.

 

Where is located the Works HFC/inofrmation web site?

 

Here you go...

http://www.worksevo.com/store/produc...roducts_id=119

 

RRE is a very respectable shop in the socalevo community... You can post at socalevo.net for more info...

 

I have Ultimate Racing 3" hiflow cat for 2 years and no cel. Put on test-pipe and got cel.

 

I have been to their shop...thats where I picked up a few goodies. Just a little insight on the shipping.....i ordered a rear sway bar from them and waited three weeks. I called twice and they gave me updates...they were very curtious. My credit card was not billed untill i picked it up and I was not bumped over when the sway bar came in. RRE is a non-bs shop to me. They are to the point and nice if you have a clue....kinda like TRE.

 

Another option is Helix HFC... no CEL after that.

Used it with various kinds of exhaust right now I have HKS Hi Power Cat and Tanabe Downpipe.