well, following on from my "just got my new car thread" there had to be a slight downside just to keep all things even!

noticed today then when you give it some beans from low down in 2nd there's a bit of a jerk at around 2500rpm, not a missfire as such but it's almost as if everything is just waking up before it bursts into life and then it's all fine.

then noticed a bit later on, give it the big un in 3rd or 4th, get to between 3-4000rpm and it's like it's holding back then not then holding back then not then holding back then get to about 4500rpm and it clears! it's not massive but i can just notice it's there!

car is remaped, uses a giac flashloader which having only owned the car 3 days i'm still learning the inns and out of so could it be anything to do with that?

cheers

john

I would book yourself in for a RR session somewhere and analyse the plot that you will get, that will at least determine if you are imagining things or not

Could be a dirty throttle body.

well, i had a 200 mile roundtrip to do yesterday so filled it up with some of the finest petrol i could find, set the ecu back to standard and hit the road. drove like a dream, never missed a beat and there was non of the surging that i'd been noticing before so i reckon it must be something on the map that it was set to so i might just leave well alone, the car is plenty fast enough as it is for what i use it for!

Could be a dirty throttle body.

second vote for throttle body, mine did exactly the same after i had it mapped,

10 min job to clean it, sorted all my problems!

if your after more info on it mate do a search for "hesitation":thumbup:

Cleaning the throttle body can't do any harm, but it looks very much like your problem is a dodgy generic map.