DRFT103

iTrader: (3)

I just went na-t two weeks ago and I'm starting to get wierd vibrations in the pedal at around 2,500 and up.

I can't tell if it's knock or valve tapping, but I can feel it with my foot and I can hear it.

Anyone else know what this could be?

I'm scared I might have messed up my motor.

It's set at 8.7 psi

turbodremz

iTrader: (18)

I dont think you would feel valve tap through your gas pedal...can you get a video or sound clip of your engine?

RyanV

iTrader: (9)

detonation/pinging in the motor and you could feel that in the pedal because the motor would be hesitating

What kind of fuel system do you have installed

DRFT103

iTrader: (3)

It is stock fuel.

obd1
map-ecu
8.7psi.

it starts happening at 2,300 and up. it's consistant.

I thought it might be a misfire so i changed out the plugs this morning and it was still doing it.

I have no idea what it is or how to fix it.

onejapman

iTrader: (10)

easuest way to tell is go to autozone and by a compression testor for 30$ if the compressions read lower than 120-150 the and if one or some of the cylinders read lower then u have to fix it

Cleanshots

iTrader: (2)

do your 12.5" tires grip with all that power?

slappy96

Auto or manual.

Are you sure the sounds are from engine and not the tranny?

LMAOMAO

iTrader: (4)

check your ignition timing?

Pinging may be from timing being too advanced.

Ali SC3

iTrader: (10)

do you have a wideband? If you can feel it in the pedal you may be running too lean. timing starts to advance above 2k. the stock ecu has probably tried to compensate and done a poor job. reset your stock ecu and check your tune.