88 bridge port TII stock s4 turbo and intercooler after car runs a while turbo gets red and she runs like crap especially under boost. also has haltech f5 fuel comp. w/2x 460cc along w/stock 4x550cc

 

Usually glowing turbo/overly hot exhaust indicates that you're running lean... What are your AFR's?

James

 

glowing of the exhaust parts is also a byproduct of retarded ignition timing. the spark occurs too late causing the combustion process to peak closer to the exhaust port opening and combustion to continue in the exhaust manifold and turbine housing. makes the turbo spool wicked fast though (this is essentially anti-lag without an outside source).

 

That happened to my stock FC once LOL


Np, just another canyon run.

 

Haltech F5 not tuned?


-Ted

 

BP with a stock turbo? Most upgrade the turbo before porting, particularly with a bp.