Hi all! As topic reads I am an owner of a 95' Skyline R33 Gtst. Bought it 'bout a year ago, was and still is fairly stock. mods so far is: * 3' turboback exaust * Greddy profec b boost controller * apexi filter Also changed the coilpacks and plugs not too long ago.
So anyway to my problem. Always since i bought the car it has had the famous flutter sound (off throttle) which bothered me some, and the old owner had the Ebc set at 1bar (14.5 psi) in high mode which I know is to much for the stock turbo to handle. Experienced what I Belive was R&R at a point when the Ebc was set to only 0.75bar. (11 psi) Been driving with the Ebc controller off for some time now, no more retarded timing. So with the controller switched off I get 0.64-0.67 bar. (9.5 psi)
I decided to inspect the BOV to see if I could find the cause of the flutter, suspected it would be blocked, I was right. There was a metal plate in the shape of the gasket in between with some red goo around. Removed it and replaced with a new gasket and went for a drive, now the BOV opens and air gets released, though I could hear a high pitch whistle sound around 2500 rpm with 1/3 throttle applied. Boost still went to 0.64 bar.
Now more recently though the car feels really slow when I go full throttle it's holding back, like I was towing somebody kind of that feel. It dosen't missfire or anything just dosen't have that punchy acceleration anymore, but when cruising on the motorway and I give it some gas in higher gears it pulls fairly good but boost only goes strong up to 0.44-0.46 bar. I can push it so it reaches 0.52 but thats not until 6000+rpm!
R33 Feels Very Slow Lately
in General Maintenance
Posted · Edited by KLA33E
Hi all! As topic reads I am an owner of a 95' Skyline R33 Gtst. Bought it 'bout a year ago, was and still is fairly stock. mods so far is:
* 3' turboback exaust
* Greddy profec b boost controller
* apexi filter
Also changed the coilpacks and plugs not too long ago.
So anyway to my problem. Always since i bought the car it has had the famous flutter sound (off throttle) which bothered me some, and the old owner had the Ebc set at 1bar
(14.5 psi) in high mode which I know is to much for the stock turbo to handle.
Experienced what I Belive was R&R at a point when the Ebc was set to only 0.75bar. (11 psi)
Been driving with the Ebc controller off for some time now, no more retarded timing. So with the controller switched off I get 0.64-0.67 bar.
(9.5 psi)
I decided to inspect the BOV to see if I could find the cause of the flutter, suspected it would be blocked, I was right. There was a metal plate in the shape of the gasket in between with some red goo around. Removed it and replaced with a new gasket and went for a drive, now the BOV opens and air gets released, though I could hear a high pitch whistle sound around 2500 rpm with 1/3 throttle applied. Boost still went to 0.64 bar.
Now more recently though the car feels really slow when I go full throttle it's holding back, like I was towing somebody kind of that feel. It dosen't missfire or anything just dosen't have that punchy acceleration anymore, but when cruising on the motorway
and I give it some gas in higher gears it pulls fairly good but boost only goes strong up to 0.44-0.46 bar. I can push it so it reaches 0.52 but thats not until 6000+rpm!
Can it be a boost leak? or clutch maybye?
Any advice would be much appreciated!
Cheers!