VTEC??? see what I'm saying there? I'm not trying to be a smart ass, wait, yes I am. If you want to set it higher for a bit then that's fine, it won't kick into vtec but your car is already programmed that if it is not at full operating temperature it will not engage vtec. If you want to raise it because you are engaging into vtec when you don't want to ie: cruising on the freeway, then that's fine. If you want to lower it 500 or so RPM's when you're having a spirited run well that's fine as well. Fucking with fuel tables and lowering vtec engagement to 4k rpms is not OK unless you want to cause major damage to your engine.