Max idle in Pk/Nut ANHT
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Joined: Jul 2001
Posts: 404
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From: Evansville, IN USA
Car: '89 GMC Pickup
Engine: 383 SBC Stealth Ram
Transmission: 700R4/VIG 3200
Max idle in Pk/Nut ANHT
I'm tuning a 730SD ECM.
In the ANHT hack file is the line below:
L8657: FCB 12 ; 187.5 RPM/(RPM/SEC), Drive max RPM rate
When I modify the FCB hex number 12 to a much higher number I can set my idle higher than 800rpm. This allows my engine to run considerably better at idle, especially when warming up in cold weather.
For now, I just set that byte higher and then edit the Idle vs/Temp settings to my desired idle. It works fine.
What I can't figure out is how to scale the parameters in Tunercat's definition editor so I can add it to my .TDF file. The hex number 12 somehow relates to 800RPM I suppose because that's as high as it will idle without modifying that byte.
Any help would be appreciated!
SBC 383 w/TFS 23° aluminum heads, full roller, 11:1 SRP's.
CC306 camshaft w/1.6 RR
730SD w/30# injectors, 58mm BBK, Holley Stealth Ram
700r4, 3.73 gears w/BFG drag radials
Thanks
In the ANHT hack file is the line below:
L8657: FCB 12 ; 187.5 RPM/(RPM/SEC), Drive max RPM rate
When I modify the FCB hex number 12 to a much higher number I can set my idle higher than 800rpm. This allows my engine to run considerably better at idle, especially when warming up in cold weather.
For now, I just set that byte higher and then edit the Idle vs/Temp settings to my desired idle. It works fine.
What I can't figure out is how to scale the parameters in Tunercat's definition editor so I can add it to my .TDF file. The hex number 12 somehow relates to 800RPM I suppose because that's as high as it will idle without modifying that byte.
Any help would be appreciated!
SBC 383 w/TFS 23° aluminum heads, full roller, 11:1 SRP's.
CC306 camshaft w/1.6 RR
730SD w/30# injectors, 58mm BBK, Holley Stealth Ram
700r4, 3.73 gears w/BFG drag radials
Thanks
Last edited by SMasterson; Jan 19, 2003 at 12:05 AM.
Thread Starter
TGO Supporter
Joined: Jul 2001
Posts: 404
Likes: 1
From: Evansville, IN USA
Car: '89 GMC Pickup
Engine: 383 SBC Stealth Ram
Transmission: 700R4/VIG 3200
Never mind. . . I can now add RPM's to my idle RPM even though I don't have a park/neutral switch, or I can set it higher when in drive.
The hex 12 doesn't relate to 800RPM at all, it relates to INTERGAL GAINS which I assume means get added to the RPM calculated in the DERIVATIVE GAINS, plus temp. added RPM's, etc.
The hex 12 doesn't relate to 800RPM at all, it relates to INTERGAL GAINS which I assume means get added to the RPM calculated in the DERIVATIVE GAINS, plus temp. added RPM's, etc.
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