Quote Originally Posted by 2nup350 View Post
Update- I just noticed my carb is a weber 27-28. Like for a 1600 VW. I wonder if this is going to work out or am I going to need a larger carb. it seems to run well and it might get better mileage with this setup but i'm certainly sacrificing power.
this might be the cause of my rough running?
FURTHER UPDATE
I pulled the carb and measured it-it's a 32/36. the number in the side of the carb referred to the original casting, not the machined final size. so I'm not going to buy a carb, but I'm back to square one with the tune. I had a Toyota truck enthusiast look at it and he said it runs better than his 20r, so he's no help. I'm starting to suspect this is just the way this engine runs.