loss of power help

moneyhun89 · Jan 27, 2013

I bought a 08 6.4 a few weeks ago and love it, so much more power then my old 7.3. The truck has dpf and cat delete 4in pipe with some kind of small bullet looking muffler but doesnt have a name on it, afe stage 2 intake and sct livewire tuner.

2 times now after a hard take of and short wot pull the truck act up but no cel. The first time it seemed like it wouldnt rev after going to a idle. Restarted the truck and all was good. 2nd time it would hardly rev and not build boost. Restart and all was good again.

Last night i got on the truck pretty hard messing with a coworkers mustang, truck did great but looked like it was blowing more smoke then norm and running a little diff after we where done. hard to tell it was dark and we where on the highway. Little while later the cel came on. u0100 p1335 p0529 p1000. And the truck did the no rev act again. Restart again seemed to be fine taking off at first but was a dog and acted like it didnt want to build boost.

Today I flashed the truck back to stock then back to the extreme and runs good but doesnt seem to make boost as fast and as much boost at low rpms like it did before but it might be just me.

Any ideas. Thanks for any and all help.

moneyhun89 · Jan 28, 2013

Any ideas guys?

forcefed6.4ford · Jan 28, 2013

EGR valve voltage and fan speed sensor.

RedRice589 · Jan 28, 2013

Sonds like wut mine did ebp sensor seemed to be the problem... did you go check wut the codes were in the code list?

moneyhun89 · Jan 28, 2013

I did. One was a egr code and a fan speed code. But I wouldnt think any of those would make the truck act up like it did.

Thank you I will do some research on the ebp sensor.

powerstroked08 · Jan 28, 2013

My ebp sensor ***t bed and it would smoke quite a bit and was really laggy. Changed it and it runs like a champ! Just my .02

RedRice589 · Jan 28, 2013

I have the fan speed sensor too but i got lotsa powa! Um air filter and the egr mighta been it trying to bypass the tune and cyle it somehow.... kind of relative codes not real specific.

moneyhun89 · Jan 30, 2013

Thanks guys. I will clean the air filter this weekend.

I am going to order a egr delete and cooler delete kit next week.
Any kits better then the others or to stay away from. I will get a kit with the elbow. how much of a diffrence does the elbow make?

Has any one seen the ebp delete? I seen a few people online with it and its cheap to do but it sounds like a bad idea to me.