My car has a new Fuel pump(less than a year old), and a new filter(less than 4 months old). Also have two sets of injectors, so injectors isn't the problem....



ok, My car is having a problem holding 13.1:1 A/F at wot above 5000rpm. I hold 60psi of pressure and stays at 58 psi throughout the wot pull,but the A/F always drops. It doesn't matter how much fuel I add through ls1edit, it still doesn't affect it.


Anyone have any ideas as to what the heck is going on???? I've been having this problem for over 3 weeks now, and simply CANNOT figure it out.


All I can think of is a crimped fuel line or maybe a clogged/bad fuel line???

Anyone ever had this problem???

Please Help!

Thanks
Tim

 

What are you testing AF with? What are the mods to the car any fuel system upgrades?

Nate

 

I am testing with a wideband on a Dyno. I have No fuel system upgrades, other than trying a set of 28lb injectors. and those did not affect the lean condition better/worse....

Tim