Anyone here has knowledge on how to use TunerPro to edit a ECU map? Mainly I need to retard the ignition due to high compression pistons and alter the fuelling as there is a engine cc increase from 900 to 944 and high compression. Just in case there is no one here I will want to get some facts right to attempt it myself. Ignition timing do I retard it by 3 degrees in the entire map range or only at low rpm, if at low rpm up until what point? Ignition Map below: I think I figured out how to read it. 8400RPM = Step 16, 79.9 = Step 16. 1000RPM = Step 1, 1.8 = Step 1 So then at idle (step 1) at 1000 RPM timing on Step 1 is 4. To retard it by 3 I drop it to 1. and then repeat the step in all RPM I want it to take affect. Me thinks lol Fuel map is a different beast. I have no idea how much where but all I need is base map so bike is running and not exploding so prefer it to be on rich side rather then lean. Bike will have no airbox, 48mm full system with open end cans, 44cc increase, higher compression and few lighter bits (flywheel and stuff). If anyone could tell me by how many % should I increase the fuel flow? Roughly. 10%, 15%?
This is on a IAW1.5M ECU, with the drop-in chip, right? The fuelling can be converted to ms by changing the conversion (in xdif info) to "X*0.06452" but I doubt that will help you much. Leave the rear cylinder (offset) alone as this just richens the base map up to let it run a bit cooler. I'd be tempted to increase fuelling by 5% across the range (in theory, 5% of 900cc = extra 45cc...) and run it on a gas analyser and see what figures you get back. The curve itself will be as good as you'll get without a dyno anyway. But when all is said and done, why not take it somewhere and let them do it properly? Seat-of-the-pants riding feel is not the same as properly monitored settings on a dyno...
Antonye that is the plan to get it on dyno. However first I want to get it going. Then sort out few niggles I no doubt will have (especially electrics), do couple hundred mile ride in run and then do it.
