[b622r]

If that is a word...my 335 seems to have an unsteady accellaration characteristic. It is hard to describe - but if i were to graph the torque curve, it would look a little like a snake. It isn't overwhelming but you do feel it. Different gas doesn't seem to impact it. It seems more smooth a wide open throttle. Any thoughts?

[Dubbedoutbimmer]

hmm not so much but when in third gear and you tickle the carb with your big toe it sets you back in the seat nicely

[thegeneral101]

it could be your fuel pump is going. does it feel like a stutter?

[b622r]

You could call it a stutter...

[thegeneral101]

ya it might be the first sign of your fuel pump going. hopefully not, but its a possibility.

[E30M3Driver]

Originally Posted by b622r

If that is a word...my 335 seems to have an unsteady accellaration characteristic. It is hard to describe - but if i were to graph the torque curve, it would look a little like a snake. It isn't overwhelming but you do feel it. Different gas doesn't seem to impact it. It seems more smooth a wide open throttle. Any thoughts?

I think what you are describing is normal (well if not normal, experienced by many here). At WOT, power surge is strong and steady. Medium acceleration, you get some fluctuations in power delivery. I think if you pay attention to it, you will find part of it is the car making adjustments-when you are asking to be right on the edge, not WOT, but still accelerating reasonably hard, it is having to make frequent adjustments to stay there.

Also, see if your right foot isn't causing some if not most of it. We tend to put our foot into it to a certain point, then as power is delivered but because we don't want full acceleration, we tend to relax our foot to take pressure and that immediately signals to the car less power-then as the power falls off you notice that and your right foot starts to reapply slight throttle - again causing the car to react. I noticed that the slightest movements of my right foot at that margin of fast accel but not WOT were a significant factor for me and changing that noticeably smoothed out the car.

My car as well as several others I have driven have acted the same way and no bad fuel pumps have been a factor.