Increasing the boost on a stock turbo [Archive] - SaabCentral Forums

: Increasing the boost on a stock turbo


Wamphyri
24th November 2003, 12:33 PM
I have a 1990 9000 Turbo with a stock turbo but its a fpt but its running at 10 psi I would like to increase it to 15psi if possable. If it is possable how do I do it?

Marrk
24th November 2003, 03:34 PM
Easiest way is to fit a MBC valve but don't go overboard with the boost settings as you lose the APC ability to reduce boost when it detects detonation. If your car has DI then you will still have some protection, the ignition is also retarded to reduce the engine power. Get a calibrated boost gauge and adjust slowly until you reach 1 bar. You should be ok at that pressure as long as you run high octane petrol.

http://www.partsforsaabs.com/product_info.php?cPath=28_168&products_id=1258

Wamphyri
29th November 2003, 12:47 AM
Easiest way is to fit a MBC valve but don't go overboard with the boost settings as you lose the APC ability to reduce boost when it detects detonation. If your car has DI then you will still have some protection, the ignition is also retarded to reduce the engine power. Get a calibrated boost gauge and adjust slowly until you reach 1 bar. You should be ok at that pressure as long as you run high octane petrol.

http://www.partsforsaabs.com/product_info.php?cPath=28_168&products_id=1258

i thought there was somthing you could adjust directly on the turbo itself that could increase the boost a bit.