I noticed after the installation of a Z1 manifold spacer and Z1 testpipes while I was at an autocross event fat there is an occasional grinding or growling from he engine or transmission while the clutch is engaged or not. The sound varies with the engine speed. The est pipes have been removed and he sound persists. It seems more common on warmer days or after the car is warmed up. Any ideas?

 

Maybe there is something missing!! just like half of the letters in you post

 

Hahaha!

Vibrating test pipes?

 

Its the beast being unleashed!

 

i literally was typing "tis the beast, lest ye fear no man.. do'st fear the beast".. then i looked up.. great minds think alike.
Except mine was like MORE old school.
Werd n stuff.

 

test pipes make weird turbo spool whistling sometimes.. but the rest of your post is witchcraft and you will now be considered a heretic.

Jus sayin.

jk.

 

I was drinking a monster as i was reading this, it had to be said.

 

The growling is all that horsepower trying to escape.

 

Wow my phone sucks, I did not realize I was screwing up so bad. To restate my issue. In December I installed a Z1 manifold spacer and Z1 test pipes. Shortly thereafter I noticed a strange growling noise and feeling coming from the engine or possibly transmission. It varies with engine rpm and not with speed. When it is present, the clutch can be in or out and makes no difference. The test pipes have been removed and I hardly think that the manifold spacer would create this effect. It has been concerning me quite a bit recently and was looking for ideas on what the problem might be. Yes I am also aware that the Z makes a wonderful sound as the horsepower is unleashed but this is different.

 

[QUOTE=EngulfingFlame;9240138]Wow my phone sucks, I did not realize I was screwing up so bad. QUOTE]

and we didnt know you lost your sense of HUMOR!
Cmon, this post was funny..

now about your problem, it doesnt sound a common Z issue.
And to be honest, the growling nopise is indescript..

Id take it to a local shop and have them give you some rough ideas.. show it to them in the parking lot... free....post those answers/ideas, and we can all go from there.

laugh a little. !!

 

or..
it may be the CHUPACABRA!!!!!!!!

 

They call it test pipes because it put testosterone into your car. That growl is roid rage.

 

i agree with this. also possibly a chupacabra. id look into both of these possibilities.

 

test pipes make weird turbo spool whistling sometimes

 

 

I like you bmc...but holy hell you double post a lot.

 

SH#T.

My secret has been discovered.

( as I flee in shame)

POST EDIT: ( just for you btw haha. ).. it helps keep a line between my semi -helpful comments and my useless BS photobucket comments... and yep, they are usually a "two-fer"