frdrdr4life

hey all just wanted to get some advice on this issue i got with my truck its an 08 fx4 supercrew with barly 8000 miles on it well i purchased a edge prrammer bout 2 weeks ao and for the past few days i noticed a loud vibration coming from the gas pedel when im driving between 60 and 70 miles an hour it seems like the engine is lacking fuel cause when i press dwn on the gas pedel more it goes away and when i put it back to stock it runs perfect. i set it at level 3 and all i changed was the tire size just wondering if anyone has had this problem

flipwalter

Do you hear the vibration or feel it? I get some buzz like vibration feeling in the pedal around 40, an it also goes away with a little more gas, no clue what it is, or if its normal. So i guess im just bumpin