Hi All,
I have a 2016 Toyota Tundra. I've modified the following settings from the default tune supplied by HP Tune.
1) Tire Size changed for my 295/70/R18 tires
2) Removed 1st gear 4lo throttle govenor
3) Set speed limit governer to 200 MPH (which I'll never get to)
Since these modifications, whenever I drive uphill with Cruise Control enabled in S or D, my transmission will downshift, but the engine will never rev past 3,500 RPMs. When the engine hits that limit, it's as if the throttle is closed and it's not allowed to open any farther. I'm really unsure where to event start looking for these limits, or if this is a side effect of changing the 4lo and speed limit governor. It seems there have also been issues with GM engines and cruise control when changing tire sizes.
https://forum.hptuners.com/showthrea...Cruise-control
I'm going on a road trip in 2 weeks, and I would REALLY prefer to have cruise control that functions correctly.
Attached is my tune file. Any idea where I should look to fix this problem?
Code:
[Specific Controller]
Toyota Denso 992K, ${VIN HERE}, 30CM52, (4)
ConnectionMethod: USB
ID: 2076445202
HardwareVersion: 1.4.0
ManufactureDate: 6/11/2020 2:42:32 PM
PartNumber: 6230
FirmwareVersion: 3.0.30
PoweredOnTime: 00:01:25
VehicleConnectedTime: 00:01:24
VehicleDiagnosticConnector: 1
2016-Tundra-SR5-5.7-Flex-Fuel-295-70-R18-no-governer-4lo-max-throttle.hpt
Thanks in advance!
Todd