I have a stock 89 with a mikuni carb. I just put a dg pipe(I know pointless but it was 50 bucks) and vforce delta reeds(the first series). I cleaned the carb and put a 380 jet in it in place the the prior 350. I never checked the set up with the 350 in it. It ran crisp before I put all that stuff on. Now it bogs when I try to hammer throttle. It stays bogged all the way with wot. I'm sure I need a smaller main but I just wanna make sure. Also this is with pump gas because its all I had. When I do 50/50 race/pump, what is the rule of thumb? Do I jet up or leave it? How many jets do people go up when you do reeds and pipe? Was I too ambitious with the 380?
Slowly lean it back for your combo, 370, 360, etc. Till it runs out clean, Record the air temp add a jet size for every -10 or subtract one for everything 10+ from the baseline. Should get you in the ball park