my poor old gmc has a problem, a lot like me. we go into limp mod past 65mph , boost set at 10-11 lbs , dont use vacum at all have spring kit- 20% over turbo-new heads pump-injectors – map sensor why???

 

Welcome not sure about your issue can you be more specific.RPM's ,EGT's ect

 

welcome to bombers, sure someone will help you out. Give fuller descriptions, always seems to help.

 

Please do not post questions here. Scroll down to the Chevy Forums, post your question there - and someone will likely be along to help.

Here: Chevy/GMC 6.2L and 6.5L - Diesel Bombers

 

x2

 

 

Welcome to DieselBombers

 

Welcome to db

 

Well first sorry mr. Evil I am new at this. It’s a 98 GMC with a 6.2 military block, 6.5 heads [ German ] turbo has a impeller change will do 20% over stock. Injector pump stock, e max tork spring kit on waste gate [dump at 11 holds 10 lbs] stock ECM new map, stock injectors. It retards the injector pump after 65 mph till I shut it off to reset. E max has a ECM 596$ stock 180$ do I need the e tork oh it has new injector brain after market.

 

Welcome, and do go over to the link the good Dr. posted. We'll see if we can't find you some help!