i have not implied anything, im merely stating the facts that high cr can be used and to give reliable satisfactory results, as for more power when im using 4wd, i hope i do, i have plenty in reserve, that i cant use now.

as for yums engine, i know he made 50horse more, what was the torque differance though, and from what i remember on race fuel the peak was at higher revs ?? ( i stand to be corrected) what your missing is that that engine had not hit its intake restriction, take off the mis inlet and fit a std 2wd unit then retest it, just like 99% of the cosworth owners inlet system, like i said, my restriction is a 34 unit, the cosworth std restriction is a the elbow in the inlet, im not talking physics, but there are other ways that will work, just because you have been told they wont doesnt mean they wont.

most engines are mapped to a compromise, most have something that could be better, unless your in the pinnacle of the sport where your budget will sustain milions in R+D, im sure yours doesnt, mine certainly doesnt, and neither does 99% of cosworth owners, there just sheep.