I had a bad ignition module on a 1990 XR4(carbs)(0C291052) changed it thinking it would fix the low WOT rpm problem, but it did not. when taking off, it seems to get to 4000 rpm and wollow trying to get out of the hole, with the throttle at wide open, and then on plane, it will only get 5000 rpm at full trim. any ideas will help me trace the problem, it seems run ok at idle and once on plane it is ok at slow rpm, but cant get 5400 at wot. have not change anything from original set up, it used to be just fine. i know it is 20+ but should still run better than it is.
thank you for the ideas