IF...i set my fuel req which comes out at 19.1 in my car1 program,my sensor setiings and back my warm up enrichment back off to 40,30,20 at woskshop temp it starts and ticks over but as it warm up it starts to chug and bog down as it seems to rich but i cant low my enrichment any more than 10 so do i lower my fuel req and up the enrichment,i tried just lowering fuel req and when its hot it runs sweet at about 4.5-5 but wont start when cold.Also i dont seem to have auto tune on my program?

[Edited on 22/2/09 by jonesier1]

That does not sound correct, have you set the temp sensor up correctly using easy therm a boiling kettle and ice cold water?

Measure the resistance in icy water, measure it in boiling water then mix the two together for a 50degree reading.

must admit no i used someone elses temp sensor setting as they are using the same set up as me(standard ford ect) .

i used the MS program to calculate my reg fuel and it came out at 16.8 , this is miles too high! when it actually got up to temperature we re-adjusted the req fuel to 9.2.

remember that you can only get reliable figures in the VE table when the car is at running temperature, you should do this first and reset your req fuel so that its running sweet at idle, once you have a reliable VE table all you should adjust is the warm up/afterstart enrichments

If the engine starts and runs for a few seconds, then stalls, this is usually a sign that the afterstart enrichment isn't quite right. Leave everything else the same, and adjust the afterstart % and number of cycles. 20% to 30% and 200 cycles are reasonable starting points for most engines, but yours may run better with more or less. There should be a point at which it works without stalling.

If the engine starts and runs for more than 20 seconds or so, then stalls, you need to adjust your warm-up enrichment bins. As you adjust your warm-up bins, you may need to re-adjust the afterstart, since these interact (i.e., a larger warm-up value may require a shorter or smaller afterstart enrichment).

hope this helps