I have a 2002 lb7 it has 106,000 miles it has an s&b air intake and 4 inch turob back exhaust, i have tried a ppe chip and a juice with attitude and it seems to not compare even close to some of my friends lb7 it dont have as much power and i can not get any amount of smoke out the exhaust even on level 5 no smoke at all and when you punch it it looses all power stalls and then takes off fine. so i figured it would have to be the injectors or the pump or something to that extent but the injectors where replaced under warranty and i believe my fuel pressure is good so any other suggestions would be greatly appreciated thanks

 

Trans slipping?

 

No it dont slip

 

What are you running on level 5?

 

juice with attitude cts. its hard to explain i mean the truck runs great but some times it just looses power and it has never since the day i bought it blew an ounce of smoke which is not what im looking for but with a juice with attitude on 5 ,and trying a ppe hot on level 5 you would think something would come out .

 

Well honestly i would say something is shutting you down. Whats your boost and egts looking like?

 

what are you Fuel Rail pressures?

 

change your fuel filter

 

I would think the at least the PPE would help that thing move pretty good