I've a tier 2 mf 6465 40k Dyna 6 tractor and I was wondering is there a way of getting it to rev flat out in top gear. I've heard they can be reprogrammed for smaller wheels allowing the engine to rev higher, don't know if this is true. Is it electronically limited from the Speedo reading? Someone once said on here you can pull out the fuse which powers the dash and it stops the limiter in top gear but I don't fancy driving without dash info. There must be some way around this?