My 2013 4 speed auto is revving too low at 100-105kph. It’s sitting at 1800-1900 running 285/75/16 Maxxis AT tyres
The valve body has been upgraded also, unsure of brand.the engine has been tuned, piggy back ecu, Gated turbo few other bits and bobs to make 300 ponies
When I need to go on the highway it doesn’t seem to like sitting at those lower revs in 4th. EGTs start to climb to 600 +
If I increase my speed to say 115-120+ or change down to 3rd it’s happy. EGTs drop but most of the time I’m not speeding and have to put it into 3rd specially heading through mountain ranges and steep hills
What’s the best way to increase the revs a bit more in 4th sitting at 100kph.? What would the ideal revs be also .?
Is this problem caused by the tyres and valve body upgrade .?
Thanks