I have a 94 E500 with Renntech 1st gear, K&N filters,& PAD performance chip. I recently noticed what seems to be a flat spot in acceleration when the car shifts from 1st to second under full throttle acceleration. This car definitely pulls harder in the upper rpms after I installed the chip. What I can't figure out is: is this flat spot just normal but accentuated because the car pulls better in the upper rev ranges( a friends E500 w/o a chip seems to have some hesitation after shifting but not as accentuated as mine); is it something in the adjustment with the 1st gear installed; or is it caused the the chip and could it be solved with a new chip. Anyone experience what i'm talking about? I don't seem to have that flat spot shifting from 2nd to 3rd. Is it possible the gear ratio between 1st & 2nd is so wide that the performance chip accentuates what I'm noticing.