Help: It ran fine before W.T.F

[speedmetal6.6]

Hey everyone its been a while since I turned my programmer up. I 've been running on the first and second power levels since the summer and have had no issues. Me and a buddy were out running around shopping for new rifles when we got to talking about the truck and he was curious how it ran cranked up. So i took it to level 4 & retrained the tranz drove it for a few hrs around town and the highway and then I started gettin on it a bit and its real doggy it hesitates bad and then comes alive I dont think its turbo lag it just falls on its face and then takes off ? it also shifts different and somtimes kinda seems like a slip but ? no limp mode or antything its just running like sh#t and I dont know why. I thought maybe the more I drove the beter it would get but still the same ( @least its not worse I guess P.S , air filter is good , oil recently changed , fuel filter is @ 67% all fluids are good and I use stanadyne every other tank of fuel. I'm lost this thing is really starting to bother me

 

[bullfrogjohnson]

Do you have the fuel relief valve shimmed?

 

[dmaxfireman]

tc getting tired?

 

[othrgrl]

Pull up the desired and actual rail pressure on the PPE and compare them. Actual should stay well over 21,000 PSI.

 

[Gmclbz]

Fuel Filter?

 

[speedmetal6.6]

I dont know what my desired fuel psi should be? What am I looking for should it be a certain psi @ a certain rpm ? Give some suggestions as to waht it should be for the tune I'm running. What's tc ? Gonna change fuel filter this weekend.

 

[wikdlmm]

tc= torque converted

 

[calabria69]

maybe because its ppe:rofl:, lift pump?? fuel rail shimmed??definitely would check desired rail pressure:thumb:

 

[speedmetal6.6]

No shim kit installed yet but I do have one, havent bought a lift pump yet. the truck ran fine and very well the previous times i have had it on stage 4 . I dont know what the deal is . As for the shitty shifting it very well could be the tc I didnt think about it .Tranz has never limped or had a real noticable slip but something is the matter some where on the truck cause its not runnin like it has in the past. Again I dont know what im looking for for fuel psi.

 

[othrgrl]

You are looking to see that desired and actual stay fairly close to each other. If they follow each other to a certain point (25-26K) then actual falls suddenly and drastically than it is likely your FPRV. If they follow each other to a certain point (18-20K) then desired continues to rise and actual can't keep up then a lift pump would help.