Attention: TDR Forum Junkies Ok guys, I keep reading these boost numbers and am not even close. I have a 93 5 spd. As far as I can determine it was stock when I got it (69K miles)
The pump does not ever appear to have been tampered with. I put the boost and EGT on prior to turning it up. It would run mostly 0psi @70mph level ground, but would go to 14 WOT.
Now at 133K. I went to 16cm hot side housing, smoke screw in +2 turns, full power ~+ 1 3/4 and star wheel 2 1/2 from the bottom, diaphragm at 3pm. New airfilter, fuel filter and set valves.
Oddly enough the star wheel was 5/8 turn off of bottom when I started. The diaphragm was already at 3pm. The smoke screw is pretty much flush with the top of nut now. The pin is making a mark (line) on the diaphragm shaft so I believe it is free. If someone tweaked it they did not leave a mark. The paint on the screws was intact.
So now I can get 2-3psi at 70 mph on flat ground and will go to 24psi WOT. EGT runs ~650 deg at 70 on flat ground. Will climb to 900 deg on a hill unloaded. It also will blow a thick black cloud off the line if you get on it until the turbo spools up in lower gears.
It runs much stronger than it did originally.
I see no evidence of leaks to the intercooler. (how would you check anyway?) What adjustment actually builds the booost other than turning the fuel up? Any ideas?
The pump does not ever appear to have been tampered with. I put the boost and EGT on prior to turning it up. It would run mostly 0psi @70mph level ground, but would go to 14 WOT.
Now at 133K. I went to 16cm hot side housing, smoke screw in +2 turns, full power ~+ 1 3/4 and star wheel 2 1/2 from the bottom, diaphragm at 3pm. New airfilter, fuel filter and set valves.
Oddly enough the star wheel was 5/8 turn off of bottom when I started. The diaphragm was already at 3pm. The smoke screw is pretty much flush with the top of nut now. The pin is making a mark (line) on the diaphragm shaft so I believe it is free. If someone tweaked it they did not leave a mark. The paint on the screws was intact.
So now I can get 2-3psi at 70 mph on flat ground and will go to 24psi WOT. EGT runs ~650 deg at 70 on flat ground. Will climb to 900 deg on a hill unloaded. It also will blow a thick black cloud off the line if you get on it until the turbo spools up in lower gears.
It runs much stronger than it did originally.
I see no evidence of leaks to the intercooler. (how would you check anyway?) What adjustment actually builds the booost other than turning the fuel up? Any ideas?
