Went to have my new ls1 motor tuned yesterday. They were have problems with there air/fuel meter but first and only run before there meter crapped out was 15.9 half way thru the run so he shut it down.

Mods are :TSP magic stick cam Patriot gold valve springs ls6 intake 28 lb injectors hooker lt headers forged pistons/rods stock displacement but Fastech said i need to go bigger on the fuel pump said stock pump was maxed out

 

may be the injectors maxing out... do you know what the pulse width was?

I just recently observed a local club members car run dangeriously lean on a dyno... I believe he solved his problem by replacing the fuel filter, it was clogged and at WOT he wasn't getting enough fuel delivered

If you can get the injector pulse widths though it'd help

 

i have a new nos 15763 inline fuel pump im gonna put on to see if this will cure my lean condition. nos claims it can hold 200 hp