poormxdad

Gents,

I noticed that my IAC Valve opens to the value at the max MAT number in the 1200 rpm box in my Initial Values Table. Not the max value in the table, just the max value in the middle column and I was wondering why.

The tune and log from 28 July go together, and the other two files go together. The earlier files are the tune I had at Summit Point and a log from a track session. The IAC Valve opened to 31.4. I never looked to see what it was doing before unless I was looking at idle behavior. However, I recently increased the numbers in the initial values table for the highest MAT row. It's been hot and I thought she needed more PWM Idle Duty. The 28 July log shows the max PWM Idle Duty is now 33.3, which is again the value at max MAT for 1200 rpm, the center column of the table. I doubt it's a coincidence.

Did the increase in the IAC Duty affect the whole tune? I don't have a log from right afterwards to prove it, but I'd swear that after increasing the numbers in the initial values table, I needed to tweak the VE Table.

Thanks,

DNMakinson

iTrader: (3)

Your VE table does not have the ability to know is the MAP value is due to air allowed into the manifold via the throttle plate or through the idle screw, or through the AIC.

No effect when throttle is opened any at all.

Braineack

iTrader: (62)

there's no difference if it's 100% open or closed while under load.

poormxdad

Gentlemen,

Thanks for the quick replies.