87 Octane tune - Modified - Transmission shifts hard

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ustommyboy
Posts: 26
Joined: Sun Sep 20, 2015 5:37 pm

87 Octane tune - Modified - Transmission shifts hard

Post by ustommyboy »

Loaded the 87 Octane canned tune.
Modified tire size to 30 in. (265's).
Modified Rev Limit -50.
All seems fine except transmission shifts hard (all gears).
Which parameter and what change do I make for a softer shift?
2001 GMC Sierra 1500 Extended Cab
V8 5.3L
Transmission Auto 4 Spd Hmd 4l60-e Electronic
Axle Rear 3.73 Ratio
LTX MS2 Tire P265/70R16
Windows 10 Pro
ustommyboy
Posts: 26
Joined: Sun Sep 20, 2015 5:37 pm

Re: 87 Octane tune - Modified - Transmission shifts hard

Post by ustommyboy »

Transmission shifts hard (all gears).
Which parameter and what change do I make for a softer shift?
Need advice please.
2001 GMC Sierra 1500 Extended Cab
V8 5.3L
Transmission Auto 4 Spd Hmd 4l60-e Electronic
Axle Rear 3.73 Ratio
LTX MS2 Tire P265/70R16
Windows 10 Pro
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mikel
Posts: 58771
Joined: Tue Jan 16, 2007 1:17 pm
Location: DiabloSport World Headquarters
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Re: 87 Octane tune - Modified - Transmission shifts hard

Post by mikel »

is the speedo calibration correct?

the tunes should not make it shift too hard, any trans mods?
Mike Litsch
DiabloSport Brand Manager
Diablo Tech support by phone:
561-908-0040
M-F 8:00 AM to 5:00 PM EST

[email protected]
ustommyboy
Posts: 26
Joined: Sun Sep 20, 2015 5:37 pm

Re: 87 Octane tune - Modified - Transmission shifts hard

Post by ustommyboy »

Only changed:
Modified tire size to 30 in. (265's).
Modified Rev Limit -50.
2001 GMC Sierra 1500 Extended Cab
V8 5.3L
Transmission Auto 4 Spd Hmd 4l60-e Electronic
Axle Rear 3.73 Ratio
LTX MS2 Tire P265/70R16
Windows 10 Pro
ustommyboy
Posts: 26
Joined: Sun Sep 20, 2015 5:37 pm

Re: 87 Octane tune - Modified - Transmission shifts hard

Post by ustommyboy »

Which parameter and what change do I make for a softer shift?
2001 GMC Sierra 1500 Extended Cab
V8 5.3L
Transmission Auto 4 Spd Hmd 4l60-e Electronic
Axle Rear 3.73 Ratio
LTX MS2 Tire P265/70R16
Windows 10 Pro
User avatar
06MonteSS
Posts: 18097
Joined: Tue Jan 23, 2007 11:33 am
Contact:

Re: 87 Octane tune - Modified - Transmission shifts hard

Post by 06MonteSS »

lower the shift pressure
06MonteSS / DiabLew Tune
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ustommyboy
Posts: 26
Joined: Sun Sep 20, 2015 5:37 pm

Re: 87 Octane tune - Modified - Transmission shifts hard

Post by ustommyboy »

Thanks :D
2001 GMC Sierra 1500 Extended Cab
V8 5.3L
Transmission Auto 4 Spd Hmd 4l60-e Electronic
Axle Rear 3.73 Ratio
LTX MS2 Tire P265/70R16
Windows 10 Pro
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