Does anyone have sound clips on a stock exhaust with these? Thanks..

 

Why are we loosing low end power with this?

 

You will not lose power anywhere in the powerban with these.

 

there are tons of clips on youtube of various HFC with stock exhaust setups. i just got some stillen hfc and will be putting them on my stock setup next week. will update

 

^ A HFC will Rasp.. Resonated are designed to eliminate the rasp. Rasp is not good. Looking for a clean slightly more aggressive tone to the stock system without going Axle back.

 

Sedan clips? I was looking for this also, In case my cat back from my coupe doesn't fit?

 

what are the power gains? has anyone who's had these for a while throw a CEL yet?

 

Cel????whats that?

 

Did you reset the ecu after installation? Would expedite the learning process for the ecu is not only learning how to operate with the New hfc but your driving patterns with such.

 

Check Engine Light

Just pop your hood and check to see if your engine is still there...

 

Lol,.........

 

I'd love to do this but my concern is droning since I have the 5AT G37 Journey w/sport pkg.

Has anyone experienced this with either the stock exhaust or an aftermarket CBE?

My eventual goal is to go HFC+CBE+UPREV tune.

Thanks in advance for any replies!

 

i have zero drone at any speed with aftermarket mufflers and HFCs - sedan, manual