ok, forgive me if its something stupid, as i'm new to the mitzu world. i just got a 01 GT, when i floor it, between around 4 and 5g it makes like a hissing sound (kinda like air letting out of a tire) and i get a slight loss in acceleration, what is this? its all stock.

 

you have any major performance loss?

 

not major, it just doesn't accelerate like it does in lower RPMS, so i guess i would call it a performance loss..?

 

nah dont worry

sometimes thats what the intake sounds like. If you dont have a huge performance loss and a crap idle/stall at idle then i would say its just fine.

 

awesome cause it sounds like a damn turbo lol. it only does it sometimes though, that would make sense with it being the intake. i think i'm getting an aftermarket one VERY soon.

along with the headers and exhaust.

and clutch and flywheel

 

The aftermarket intake will make that louder lol. Most people like it. Injen all the way!

 

hey man i think it sounds alright, but you can just feel how restrictive the stock intake is.

 

yes if you get a aftermarket cold air...go for injen! they sound so nice and give you a little power.

 

Try removing the air filter and see if it makes the same noise. A wet or dirty air filter will cause the intake to make a "suction" noise at higher RPM's due to it's restriction. Seen it many times when i worked for Mits- mostly during rainy season and mostly due to wet filters. Give it a try.

Joel, CA

 

sounds kinda far fetched, but i am missing the bolts holding the ram inlet down.... i think when it hits high RPMS it is bouncing around and suctioning to the hood, sounds like that actually might be it.