Ive had an issue lately in 4th, i pull hard threw every gear till then, and i run RichAF, (10.0-10.6) and it stops pulling.
I think its a FMS, any ideas?

and why not just save gas, i'll run the LS1,WRX,Grand National and screw it, throw Thacker in there while im at it! If we run from a dig, hopefully i'll get a chance to jump ahead since all you beast will be spinning! hahaha