Review Fast Intentions CF cat-back and HFC

[tfmbigdog99]

+2 I want fast intentions re badged Ti TIPS!!!!!! TONY PLEASE?

[sTiLLBaLLiN37]

Looks damn nice, great choice my man

[g37mobbber]

congrats sound sick!!

[xo4ox]

Thanks guys for the comments, i really appreciate it!

Originally Posted by heff

sounds pretty good man, i can hear a lil rasp, is it from the HFC?

Thanks, yes i noticed a slight rasp too, i think its from the HFC, i was planning on wrapping it with header wrap but some say it will shorten the life of the exhaust?!

Originally Posted by n_jay888

Mine say's sebring tuning. I guess that's a new logo or something, i don't know...

I think its new, few people have it so far

Originally Posted by G37Sam

that second video should be placed in your stillen 3g intakes review lol I tried recording video's after test pipes and its all I can freaking here! congrats man!

does it drive/feel different by any chance?

Thanks bro, yes i should edit my intake post with that video.
Yes i can feel it pulling harder now, maybe its all in my head but i do!

I hope COBB releases an AP for the gulf spec soon

[Staples]

xo04ox, how does the HFC sound broken in? Is there still slight rasp at the high end?

By the way, I found this information off of an automotive technical website about header/exhaust wrapping.

"I can't tell you the number of calls I get from customers who are interested in DEI exhaust wraps but are afraid that the wrap may damage their pipes. Though a credible concern, I'm not sure who started the rumor, but for some people this myth has been inaccurately embedded as common knowledge to many. Wrapping pipes will not damage your pipes.* It will not make the metal brittle or promote any enhanced corrosion. I've yet to see a picture of a header, turbo down pipe, or exhaust pipe that was damaged by wrap as one would think that with all the information and images available on the internet someone would have been able to provide proof of such negative occurrences. I was really shocked after reading several forum threads from the "self-proclaimed know-it-alls" that consistently post replies in response to inquiries from other members citing a story or rumor rather than from personal experience.

THE TRUTH
Basically, every time you start up an engine the exhaust system pipes heat up and undergo an aging process that is so nominal it would take 50+ years to actually see any kind of change in the metals composition. Exhaust wraps do accelerate this ageing process, but even so it could take up to 30+ years to see any real degradation of the metal "AND" even that would be nominal at best! The same applies to ceramic jet coatings so don't let anyone tell you otherwise (that it's better because it doesn't make a difference)."

Very credible information...

[xo4ox]

Originally Posted by Staples

xo04ox, how does the HFC sound broken in? Is there still slight rasp at the high end?

By the way, I found this information off of an automotive technical website about header/exhaust wrapping.

"I can't tell you the number of calls I get from customers who are interested in DEI exhaust wraps but are afraid that the wrap may damage their pipes. Though a credible concern, I'm not sure who started the rumor, but for some people this myth has been inaccurately embedded as common knowledge to many. Wrapping pipes will not damage your pipes.* It will not make the metal brittle or promote any enhanced corrosion. I've yet to see a picture of a header, turbo down pipe, or exhaust pipe that was damaged by wrap as one would think that with all the information and images available on the internet someone would have been able to provide proof of such negative occurrences. I was really shocked after reading several forum threads from the "self-proclaimed know-it-alls" that consistently post replies in response to inquiries from other members citing a story or rumor rather than from personal experience.

THE TRUTH
Basically, every time you start up an engine the exhaust system pipes heat up and undergo an aging process that is so nominal it would take 50+ years to actually see any kind of change in the metals composition. Exhaust wraps do accelerate this ageing process, but even so it could take up to 30+ years to see any real degradation of the metal "AND" even that would be nominal at best! The same applies to ceramic jet coatings so don't let anyone tell you otherwise (that it's better because it doesn't make a difference)."

Very credible information...

There is still rasp in high revs, but its so minimal, im going to remedy that with header wrap.

Thanks for the info, i was installing the wrap no matter what because the in-cabin sound is too loud for my taste, but the info you posted makes me relieved

[Staples]

Originally Posted by xo4ox

There is still rasp in high revs, but its so minimal, im going to remedy that with header wrap.

Thanks for the info, i was installing the wrap no matter what because the in-cabin sound is too loud for my taste, but the info you posted makes me relieved

Hey, I was thinking last night for a while about having an HFC setup that will relieve a lot of the rasp. Why hasn't anybody resonated their high flow cats? There's a foot long straight pipe after the cats that could be cut and resonators welded in. I'm going to talk to Tony from FI tomorrow to see if there's a possibility of him setting me up with a custom set to see if it helps. The HFCs will suppress some of the rasp more then unresonated test pipes, but the HFCs + resonators should do the job, but still sound louder then OEM cats.


The resonators FI uses for their test pipes should match perfectly with the high flow cats since there's just enough room to weld them in and have a good fitment. If he goes for the idea I'll do a review of the FI carbon fiber exhaust matched with these to give some people an idea of what it sounds like.

[G37Sam]

+1 I'd definitely do that too.. I know Tony wouldnt mind trying out new things to please his customers

[Staples]

Originally Posted by G37Sam

+1 I'd definitely do that too.. I know Tony wouldnt mind trying out new things to please his customers

It seems like it would only make sense, and I'm not sure why no one has done it yet.

[oOmikeyboy]

Originally Posted by xo4ox

There is still rasp in high revs, but its so minimal, im going to remedy that with header wrap.

Thanks for the info, i was installing the wrap no matter what because the in-cabin sound is too loud for my taste, but the info you posted makes me relieved

This rasp you speak about, is it also prevalent in the stock exhaust or just the FI CF?

[Staples]

Originally Posted by oOmikeyboy

This rasp you speak about, is it also prevalent in the stock exhaust or just the FI CF?

With stock OEM cats there's no rasp with the carbon fiber exhaust whatsoever. With HFCs there is some rasp whether it's the stock catback or the fi cf.

[xo4ox]

Originally Posted by oOmikeyboy

This rasp you speak about, is it also prevalent in the stock exhaust or just the FI CF?

Originally Posted by Staples

With stock OEM cats there's no rasp with the carbon fiber exhaust whatsoever. With HFCs there is some rasp whether it's the stock catback or the fi cf.

As Staples said, the HFCs produce rasp, just a bit at high revs

[Staples]

Bump, don't mean to thread jack! I just got off the phone with Tony from FI he said he's going to set me up with a custom set of HFCs with their 8" resonators welded at the bottom. He said it would have to be trial and error because the cats get so hot down the road it could blow out the resonator which would be an extremely small chance. Their resonators are fiberglass packed, but it would be 8 or 9 inches from the actual cat.