this might be a dumb question but how are you guys able to tell when your transmission is shifting at WOT. My stock LED tach just lights all the way up when i go WOT. i've tried to use the scanmaster to read rpm but it's too slow to get a good rpm measurement. the only thing i can think of is using the speedo and calculating the rpm's from the gear ratios. I'm just alittle lost as to how you guys are manualy shifting or even just measuring your shift points. Thanks.