Chris-what you are seeing is completely normal, and as mentioned by Stewart, it is linked directly to VE of the engine.
The point in the rev range where your engine is making max torque is where the engine is ingesting the maximum amount of air (the point of greatest efficiency-and hence requiring the maximum amount of fuel.
Although you rev the engine more, even though it is at WOT, physical characteristics mean the engine is ingesting less and less air. (IE as you rev the engine more the lower the VE becomes).
As the revs build, although the power may be increasing, the torque is dying away, and hence following yuor max torque point, the injection time should gradually decrease.
(Note that the above description must be considered whilst the engine is at a constant manifold pressure.)
Don't fret mate-that's exactly what you should be seeing.
Re: fuel tuning question
Wed, 14 September 2005 00:22
