Good stuff.
Great looking CATs

 

So I'm reporting here after driving 3,000miles. first of all, no CEL at all. 2nd of all, there is no rasp whatsoever, just a straight up mean sounding exhaust! In terms of loudness under normal driving, my setup is now a hair louder than with just my Stillen CBE. It has become MUCH quieter over the last 3,000miles during normal low RPM driving but really opens up when you go WOT.

I'm going to get an in-car sound clip within a couple days (maybe even today If I can)

Here's a sound clip from a dyno and a before/after comparison of the whp gains >>

Previous Dyno Run
Mods: Stillen CBE and Injen CAI, No TUNE
Numbers: 252.7whp

New Dyno Run
Mods: Stillen CBE, Injen CAI and Invidia HFC, No TUNE
Numbers: 259.7whp

So average 7whp gain from the HFC

 

not bad, but I don't think you can embed movies in this section of the forum, a linky would work.

Dude we need to get Q8y_dude to show us how he went about getting a tune for his, I want to see 299whp too

 

hey how much were the O2 extenders???

 

I can't remember actually. They didn't work out though. They were too small and the sensors didn't fit. I installed the O2 sensors directly onto the HFC and no CEL since I first got them.

 

nice

 

great review so far bro! Im thinking of getting those right now. I already got the ARK GRIP exhaust and R2C intakes, so hopefully this will make the whole thing sound more deaper and mean.

Your car sounds mean as heck in the vid there! I wonder does the HFC makes it sound more like that or the exhaust?

 

So how's the invidia holding up??? Im really thinking about getting these for my sedan.

 

No CELs, no issues at all.

Here's my latest video BTW. This is after tuning with Uprev Osiris
It sounds WAY deeper in real life. This was taken with an iPhone 3G cam so it's pretty crap quality. It'll sound a little better with headphones.

 

^ Nice, just make sure your welds on the cats are in good shape.....u don't want them ending up like mine

 

So I bought my Invidia HFCs. Should come in next week. I got 2RC intakes and ARC GRIP exhaust on my G so far as performance mods.

Anyway I was gonna ask you what's the Uprev Osiris tuen??? And what's your HP at the wheels there with it???

 

Uprev Osiris is the software Uprev created to allow tuning of the ECU.

Final number is 272whp.

 

what was the gain from the Osiris???

 

Q8y_drifter I just installed my Invidia HFCs. Installed them at work and just drove home. ...I got a question when you installed yours did yours make any sounds? when I give it some gas it give off a whistling sound. The harder you accelerate the louder the whisteling sound becomes. I tightened all my bolts pretty hard and used all the gaskets that came with it. So I hope it's not an exhaust leak you know.

Let me know bro. Maybe I just need to brake it in????

 

if it's whisteling then it's most likely an exhaust leak.
If it's hissing, thats just extra back pressure leaving the exhaust.

Check your screws and bolts, loosen and retighten them.