[M_a_t_t]

Originally Posted by JulianEdgar

2.3 percent throttle variation? Seems a little high.

I didn't bother using the throttle stop after the first few tests because I could manually hold the throttle to 1 per cent (watching the live TPS percentage readout on my Motec dash) eg 20-21, 20, 20, 19, 20, 20, 20, 21 (etc).

One thing that I have learned though is that you must enter the test straight at dead-on the same speed and then move to your throttle stop position. In my case I enter at exactly 100 km/h (there's a tree I sight against) and then go to throttle-stop position, which might then raise or lower that speed by the end of the straight, depending on the aero changes.

But best test is windows open / windows closed - then at least you know you're measuring real stuff.

I thought the 2.3% seemed high as well, but thats what the numbers say .