A classic problem

[walter]

hello everyone , i'm having a problem with a classic fast efi , i'm new to tuning , this system was set up at fast in memphis thecar is runing like it has a lean condition so it dumping tons of fuel , i do have the set up disc of the tuning from the dyno , i'm a automotive tech , but tuning is new and a little misterius to me , if some can point me in right dirrection i would thankfull

[TurboNova]

Sounds like you may have a bad O2 sensor. When the sensor fails it usually adds the max amount of fuel allowed in closed loop if closed loop is enabled. An exhaust leak will also cause this condition.

I would suggest downloading the XFI manual, not all of the features are in the classic software but most of the tuning stuff is. The documentation is much better than the classic and explanations are better on tables and how they work.

Our FAST XFI tuning class would also be good for you to take and would explain how this stuff works.

[walter]

well brian , thank you for the reply , we just redid the engine all new gasket and i did look for exhaust leaks and i had non , also do you think 55 pound injector is good enough for this combo , and i will check on the class , do you know about how much does classes are , about the xfi software you told me where can i find that , and againg thank you for your time and help