1st gear vibration
I have an 2006 mustang GT with an auto. I've noticed that if I hold the E-Brake and I'm accelerating from a stopped position it shakes for a moment as the top of 1st gear. I recently changed from a 93 octane tune to a 87 octane tune to save money on gas and noiticed the shake to be a bit less with the lower octane tune.
This isn't normal exhaust vibrations I'm feeling, it is a distinct shake when accelerating from a stopped position and doesn't happen when the car is in any other gear than 1st.
Any thoughts on what's causing this or does everyone get this?
Holly Systemax, Shorty Headers, TFS Stage 1 Cam, TFS FAC 170 Heads, Cobra Transmission, King Cobra Clutch
2006 Mustang GT
JLT CAI and a Custom Tune