I have a 1991 Camaro with a 355ci Super rammed, LT-4 hot cammed, etc. engine and noticed the other day that the rubber hose/duct collapses when I rev the throttle. I have K&N filters and "ram air" boxes , it seems as though it should breath well enough to not be sucking the hose shut. Any advice on how to fix the situation? I will not mount a K&N directly to the throttle body, and don't wish to fab up some type of pipe over next to the battery, I would rather keep the factory intake location. Has this happened to any of you? Thanks in advance!

 

are ya talking about the rubber fitting that connects from the MAF to the TB? then again you have a 91 so I don't know when they went back to SD.

 

Yeah, that hose, but I do not have a MAF, the 91 cars are speed density.

 

Is it flattening itself out a little or a bunch???

Are your K&N's dirty or clogged up, it honestly happens.

to do a quick test, turn on the car, pop the hood, and listen to the suction coming from the dual snorkle, then while it's still on "make sure there nothing to get sucked up" unbolt it and lift up the dual snorkle a bit if it makes a big increase in sucking then you got cloged up filters my friend, it will sound louder no matter what, just how much it does tells ya.

kinda understand what I'm sayin

you could also see if ya can replace the part with a piece of PVC.

 

It sucks it hard enough to almost make the top and bottom edges touch! The filters look to be pretty clean, but I suppose I could clean them out anyways. Thanks for the advice....

 

take the filters out and rev the engine. if it dont collapse then the filters need series cleaning. it they still collapse then maybe the rubber is going bad. i just bought a new one for my car from the dealer and it was $6.00.