Thread: New SP Project
View Single Post
Old 05-04-2013, 03:03 PM   #752
Twin_Turbo_S54
Registered User
 
Join Date: Nov 2012
Location: Istanbul
Posts: 722
My Ride: M3
Quote:
Originally Posted by 323tom View Post
I agree Mert, last year I only went up to Iboost 3 of 5 with 80 % ethanol content which I believe was around 26-28 psi and 800whp+ and I can tell you I was frightened when I heard the pro efi traction control go off for this first time, it felt insane! I never tried Iboost 5 as the vibrations my car was making was also scary, I believe it was the 1 pc drive shaft that I had removed now but SP says there is still vibrations but not sure if as bad as before.. Are you running solid motor/tranny mounts?

I do run stock mounts all over.

I used to have 1 piece carbon sheety meety pitty shaft, which failed 2 times.

I ended up with oem BMW shaft.

Although it failed, it did not make any vibs.

My 3 M3s do not vibrate.

What may vibrate on your beast:

- check the transmission, you may have damaged the tranny and it may vib. It may be the 1st to check.

- guibo, cheap product, test a new guibo.

- vibration damper, test a new damper.

- all pulleys, ac pulley, coolant pump pulley, steering pulley.

- flywheel, get it balanced.


Does the vibration happen at each gear between a certain rpm range_?

Have you tried driving @ 2nd gear @ 7000 rpm and is there any vibs or does it vibrate @ over a certain road speed?

Havee you checked your Wheel bearings?
__________________
E46 M3 Sedan All Wheel Drive Twin Turbo
0-100 km/h 2.91 seconds @ 15 psi

E46 M3 Coupe Turbo 60-130 mph 4,2 seconds (2011)
Twin_Turbo_S54 is offline   Reply With Quote