Quote:
Originally Posted by al lkosmal
Try this.
1. Get the settings to the same state as above. I.E. close the idle valve, set the throttle to 2.2%. You should now be idling at 1500 RPM...
2. Adjust the throttle stop to lower the idle, but stop just as it starts to surge.
3. Instead of richening the mix......lean out the fuel map in the idle cells a bit and see if the surging is reduced.
Don't go too far, too fast....just lean it out a bit and see if the surging issue improves.
Are you logging?
regards,
al
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Hi Al,
Thanks for coming in. Yes, at 2.2% throttle on the stop I idle at 1500. i will try out our suggestion of leaning out then instead. What ignition advance do you typically see at idle, and and what MAP at around 900 rpm typically? I am running DR20 cams. More aggressive than 964 but not crazy. My tuning experience is on a supercharged and a turbo car so I am having difficulty mapping over what worked in those situations.