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Jarrod
10-10-2004, 04:13 AM
Hi all,
we are setting up our MoTec for the first time, and are having trouble getting it to run with our new intake. One of the old intakes runs pretty well, with a barrel throttle, the new one is set up with a butterfly. both are side entry types. All of our old maps for the autronic are MAP based, and we are trying to set up TPS based maps, so the shapes are all different.
If anyone could help out with a base map so we can work out what shape our fuel map should be it would be greatly appreciated. The engine will fire, run roughly, then revs up really quick (10,000RPM), will stall if we close the throttle a little, and we can only control it by choking it with a hand over the throttle. Any advice? This is being done without load at the minute.

Charlie
10-10-2004, 11:48 AM
Jarrod-

I would say with a decent amount of certainty that you are fighting a vacuum leak now. I'd make sure that isn't the case before you start worrying too much about the map.

Jarrod
10-10-2004, 01:45 PM
yep, found it. Couldn't pick it on the dyno, but a little compressed air showed it up straight away.