i haven't drove my Rex for a long time maybe three days..i started up today and took it for a run..it pulls realli slow..i dunno for some reason..ive done new oil change, change the filter, change spark plugs, and pump 91 gasoline...but some how its like realli weak it pulls hard after 5,500 rpm but it has hard time gettin to 5,500rpm..do i need a valve tuned or timing tune..

 

try letting it run for a little bit...then reset the ecu....then try to run it again...after its warm...take it for a spin and see if that helps

 

still acts like a faget..it acts as it don't want to run at all..i haven't try flooring it..like u know how on 1st gear i step on it so that it can get to 4,500rpm..it takes quite a while to get there..usually it peel out and gets there quick..