hey everyone just wanted to get some help on a problem i have with my truck let me start from the beggining. well i have an 08 fx4 supercrew with neerly 8000 miles on it. i just purchaced a edge programmer bout 2 weeks ago its set on level 3 i run 91 and the only thing i changed was the tire size well for the past few days iv noticed this very rough vibration coming from my gas pedel when im going between 60 and 70 miles an hour it seems like if the engine isnt getting enuf gas cause i press dwn on the pedel a lil more and it goes away and when i turned it back to stock it goes away does any one else have this prob or do i need to just ajust the gear on the programer

 

Do you have any additional mods besides the edge programmer?

 

i have a afe stage two cai and flowmaster series 44 exhaust thats all

 

You should call Bill at PHP (Office: 678-963-9913). He's probably the most knowledgeable person for this.

 

Ding Ding Ding... We have a winner

You need to get a custom tune to get rid of a nasty lean condition that arises when a CAI, and edge programmer are installed on a 3v 5.4L. Bill at PHP tuning can help you will all of this.

 

Bill will tell you that a CAI with canned edge tunes do not work well with each other. I think that this combo may lead to a lean condition in some trucks, but others here have said "no problems".

I noticed a difference at certain rpms (2000 and 3400) after I added the Maggie exhaust. I would get the slight cabin drone, but there would be weird vibrations (felt and heard) throughout the truck. When I put it back to stock tune, they went away. I just chalked it up to the programming/exhaust combo causing some weird sound vibrations. I have been running this combo for about two years without any further issues. Never felt a vibe through the gas pedal.

 

thnks for ur quik replys to all of you i will definatly be calling bill on monday cause im sure there closed sundays again thnks to all who replied