constant boosting problem

cre · 11-25-2009, 07:58 PM

Begin with checking for error codes. Then start looking for vacuum leaks; An intake leak would probably cause you to run worse after 2.5K and not before.

Check for diagnostic codes: http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx

Why was the car sitting for 10 years? Blown head gasket? If so, the bearings have probably eroded and you may have some significant rod knock.

The stock turbo begins spooling around 2K and all turbos spool faster if you're running rich (it's a tuning trick actually)... cooler air is denser and richer air is denser.

11-25-2009, 07:58 PM	#3
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Begin with checking for error codes. Then start looking for vacuum leaks; An intake leak would probably cause you to run worse after 2.5K and not before. Check for diagnostic codes: http://www.cygnusx1.net/Supra/TechTi...ror_codes.aspx Why was the car sitting for 10 years? Blown head gasket? If so, the bearings have probably eroded and you may have some significant rod knock. The stock turbo begins spooling around 2K and all turbos spool faster if you're running rich (it's a tuning trick actually)... cooler air is denser and richer air is denser.