^I'd like to know as well.

What did you guys use for the non-fouler method with HFCs or TPs? I will have the Berk HFCs installed this coming Saturday. I heard stuffing the stainless steel wool in the non-foulers is the best option? Any idea where I can find the stainless steel wool? I'm not looking forward to seeing any CEL

 

kuhan, im deciding between hfc or tp and do not want the cel.. whatever you decide please keep us updated

 

I had to do the non-fouler method with my Stillen HFC's, I ran a week with out the non-fouler method and car started to jerk one day when I WOT (also threw a CEL shortly there after). So I decided to try the non-fouler's and it works fine.

 

^how many miles have you put on since the non-foulers?

 

What did you use for the non-fouler method?

blue20051, I'll keep you updated.

 

About 100 miles

two sets of 18mm Non-foulers, bored one out of each set, but then couldn't bore them out enough. Took them to a local exhaust shop and they welded an o2 bung to each of the bored non-foulers. I then screwed the non bored non-fouler to the one with the o2 bung.

 

100 miles? I was hoping for like 10,000 miles.

 

nope did it last Friday night.

 

quick question . . what is the size (output) of stock cats on the HR ? 60 mm? is this the same to the size of AM TP and HFC ? . . . i do have my OEMs lying around in the garrage . . i could measure tham . . but im lazy

 

roughly 2.5"

 

interesting . . . i know for sure that stock HR y pipe is 2.5" at exit . . . soo . . individual stock cats exits should be smaller . . 2.35" maybe ? ?

 

no one has tried the HR ART pipes?

strange, i thought they would be a big hit

 

Not for the price of those things.

 

Got Berk HFCs installed with spark plug non-foulers (no steel wool or brilo pads) today. 70 miles without CEL so far.

Berk HFCs
Stillen y pipe
Nismo s tune exhaust

Will keep updated.

 

yeah, they're not cheap. But i've ordered some, so i guess i'll see for myself how good they go...the exhange rate is pretty good atm, you guys have it even better priced

 

Thanks! looking forward to the next update...

 

the new berk HFC for the HR have never given any CEL that i know of . . . any exceptions ? ?

 

the oem cats are 2.5"?? are you sure? I always thought they were 2.25"..

 

yeah . . 2.25 sounds more like it . .

 

^Yeah, I think it's around 2.25". Sorry I haven't taken any measurements.