Permanent AHC adjustment to raise height? (1 Viewer)

[john thompson]

Sorry if this is a dumb question, but can I adjust my 100 series' AHC to permanently raise my height? I have a slight rub with my front tires, even after doing some creativecmetal bending, and just need a half inch lift. I also posted this on the 200 series board by accident

 

[Justinfro]

Yes...

Slee - Electrical Switches

Slee AHC override install

 

[PADDO]

Sorry if this is a dumb question, but can I adjust my 100 series' AHC to permanently raise my height? I have a slight rub with my front tires, even after doing some creativecmetal bending, and just need a half inch lift. I also posted this on the 200 series board by accident

Search the term “sensor lift” and then adjust your pressures accordingly for the slightly higher N height. Do you reckon 1/2 inch will stop the rub? Anyway, when you override (switch FL and FR wheels speed signals out) the vehicle’s speed input to the AHC ECU you also mess with your adaptive variable suspension. No speed signal means the ECU doesn’t know the vehicles moving so damping stays at mid point (8) instead of varying between 1-16, anti dive on braking, damper isolation when cornering, anti squat on acceleration etc aren’t active as, as far as the AHC ECU is concerned, you’re just idling in park. Don’t get me wrong, being able to override the speed input to temporarily stay in H (or L) has its merits, but for a constant 1/2inch “mini lift” then readjusting the 3 height sensors to a raised N height and compensating for the resultant pressure increase is much more sensible.

 

[john thompson]

Thanks, that really helps. I appreciate it

 

[john thompson]

Search the term “sensor lift” and then adjust your pressures accordingly for the slightly higher N height. Do you reckon 1/2 inch will stop the rub? Anyway, when you override (switch FL and FR wheels speed signals out) the vehicle’s speed input to the AHC ECU you also mess with your adaptive variable suspension. No speed signal means the ECU doesn’t know the vehicles moving so damping stays at mid point (8) instead of varying between 1-16, anti dive on braking, damper isolation when cornering, anti squat on acceleration etc aren’t active as, as far as the AHC ECU is concerned, you’re just idling in park. Don’t get me wrong, being able to override the speed input to temporarily stay in H (or L) has its merits, but for a constant 1/2inch “mini lift” then readjusting the 3 height sensors to a raised N height and compensating for the resultant pressure increase is much more sensible.[/QU
Very helpful, thank you

 

[BEG]

While there's nothing wrong with doing a sensor lift, per PADDO's instructions, to gain some static height at N, it's not a good long term solution to tire clearance issues. The suspension still follows the same travel arc with respect to the body and you will still have contact when the tires are stuffed. A body lift would be a better solution, since it moves the body away from the suspension pivot points, providing more clearance throughout the entire suspension travel.

 

[BillZ260]

Put your truck in HI mode, then drive over a speed bump. Then imagine driving like that all the time. That's what you get with the electronic solution. For a long term lift and keeping the AHC, use the spacers, I have them, easy install and you keep the ride, and the ability to still drop and raise the truck. You could probably get away with just the fronts. I had spacers at all 4 corners but pulled the rear to get the rear to sit level.

 

[DirtDawg]

2-2.5" AHC Lift Using King Coils & Shock Spacers