Would someone look at my tune and see if they can help with an idle flare?

[ForcefeedWS6]

I have a 00 WS6 M6 with a procharger. I put 47# injectors and a racetronix fuel pump. I setup the flow rate of the injectors and I'm running COS5. If I touch the throttle it will go up to 2k rpm and hang there for 3-4 seconds. I logged the desired idle flow and it averaged out at 0. I also logged snapping the throttle. I hope someone can help. Thank You.


2000 M6 COS5_0007 Auto VE Tutorial_0003 Z06 VE Table.tun

Log_Idle.efi

Log_throttle.efi

[ForcefeedWS6]

Anyone care to try and help?

[ringram]

Take a look at follower decay rates and delay

[ForcefeedWS6]

I've been playing with them. I got it where it will return to idle if I snap the throttle sitting still. It still hangs if there is a load on the engine and I push the clutch in. Still need to play with it somemore. Thank You.

[DaddySS]

Taking a quick look you might increase the throttle follower decay in p/n. Log the follower, cracker and IAC to see which one is holding it up.

[ForcefeedWS6]

Thanks DaddySS. I've been playing around with it. I've got it where it will return to idle after a snap of the throttle. It's wanting to hang at 1500-2000 rpm while moving and then push in the clutch. I changed the cracker settings and it never effected it. I finally changed the speed it comes in and kicks out. This seems to have helped. I drove it to work today and at times it still wanted to hang. I will try logging the follower,cracker and IAC and see if I catch anything. What's the best way to log this data. New to this stuff, just wanting to make sure I do it the correct way. Thanks for the help.

[DaddySS]

You want to focus on the follower, not the cracker and especially decay in p/n (clutch depressed).
Log:rpm, tps, ect, vss, dyn cyl air, spark, iac TC, iac TF, iac steps, rafig.
That will give you a good sense of what is directing the idle.

[ForcefeedWS6]

Ok thanks. I will log this data and see if it shows what's going on.

[ForcefeedWS6]

I put all the throttle follower and cracker back to stock settings except for the throttle multiplier. I set it to 0 and that seemed to fix the problems except for when its hot idles about 200rpm to high. I take the car out tonite and go to the show. On the way to the show it is fine. On the way back it starts hanging again at about 1800rpm when the clutch is pushed in. Sounds like shit when you pull up to a stoplight push the clutch in and the rpm's shoot up. Would this have anything to do with the throttle learner? This thing is really starting to piss me off. Almost ready to pull the procharger and put it back stock. I'll try and take it out and log some data tomorrow. May just need to stay away from it for a day or so and calm down.

[DaddySS]

Start with copying your 14MPH cell in the TF decay p/n to the lower cells and see if that doesn't eliminate the hang.