Simple question, can't find the answer.

I know HFC move the power band higher. That's fine as long as my 0-30mph/ 0-60mph stays the same (or improves) as long as it doesn't get worse. So what's the answer?

Reason for question:
I know the G will feel slower after HFC (I understand why) but it's up to what point it'll be slower that matters. I don't mind if my car feels a bit slower off the line, and I don't mind if I have to wait a little longer for the power to kick in. I'm only concerned with reaching those speeds (30mph/60mph) faster then stock cats. If it'll help, great. If not, Ill move onto other mods.

Thank you

 

Ok... What kind of exhaust are you running...? Stock, or aftermarket..? If your running stock I'd assume it may help a bit... If noticable at all...

 

Lots of trolling posts from people who can't speak english lately. Kinda weird.

 

Yeah, my fault, just curious on the exhaust he's running...? Kinda a stupid thread/question...IN my opinion...I apologize, just seeing so many useless threads and it gets annoying...I know, I need to lighten up a bit....will do/ not post... Ha ha..

 

I agree. Maybe it's guys from my350

 

Guy's chill. I'm real. I've got a 2004 g35x. Stock exhuast except for coupe midpipe. It's the back pressure issue with opening up the exhaust I'm worried about. If the stock exhaust builds enough back pressure, great seems like I'll install the HFC based on Tyke420's answer. Can't believe how quick you guys are to assume I'm some illiterate 12 year old :/

 

So, you're asking if you'll lose power? Your 0-60 is a different matter altogether. Anyway, I would get another exhaust before you got HFCs. I heard one dudes car with HFCs and stock exhaust...sounded like straight butt..

 

haha

 

I know the power is never really lost, I just didn't want it shifting out of the usable range for a daily driver. I wasn't aware of that, I wanted to make the stock sound a little louder, not sound like rice. Thank you. Would I be better off changing my muffler to get a bit more sound?

*definitely not getting HFC's first after seeing that haha*

 

Yeah, all I did was remove the resonator and then replace the stock muffler with a free flowing magnaflow of the same configuration. Revs a lot faster and basically just amplifies the stock sound. Putting a Z-tube, K&N and a plenum spacer on the intake side really helps smooth out the sound too and also makes it a bit louder.

 

So straight pipe instead of resonator? With no rasp? I'm looking into mangaflow mufflers now. I've already installed those mods