spike74

Hi,

I got my first RX-7 today as a project for the summer.

The only thing is I have never seen an exhaust quite like the one on this car.
It has the normal regular pipes you would expect to find from front to back,
The bit I dont understand is the 2 other pipes which are part of the exhaust system
One of them seems to be ok and is connected at both ends the other is only conneceted at the engine end and seems to run along down the car and exits near the nsr wheel and makes loads of noise im sure this should connect back to the main exhaust somewhere but where???

does anyone have a diagram they could send me or explain it to me PLEASE

PLEASE PLEASE help

Stu

phoenix7

I assume it's a turbo based on your location. does it by any chance make a whoooosh sound every so often?

I wanna say it's a divorced Downpipe with the wastegate vented to the atmosphere. Pictures, drawings and any more details would yield more accurate answers/guesses.

my second guess is that it's the Split air pipe ( I know the NA's have them but I can't recall if my Turbo had it also, it's been years since I've had stock exhaust)

spike74

HI,

Sorry i forgot to say it aint a turbo

Stu

phoenix7

hmmmmmmm. ok.

one small pipe from the engine to the cat? Split air pipe.

I need more details about the other pipe/hose.

seriously: take pictures. It's the only way to figure out what they are.

Sideways7

iTrader: (7)

One of the pipes is the "split air pipe." This connects from the cat to the intake manifold and on s4's has another tube that that splits off and feeds the aux port activators.
On the other one, I have no idea. Where on the engine does it connect to?
Again, pics would really help if possible.

spike74

yep it has the small pipe from engine to the cat that one seems ok

there is a third pipe that looks like it has a mini silencer in the middle

thsts the little bugger that is confusing me lol

spike74

I will try and get some pics in the morning

It is connected at the engine end somewhere

phoenix7

is it going to the front of the car? or towards the back?

spike74

it goes from the engine to the back of the car