Yeah, probably the upper pulley!
FACK. Tim I need a pump, and I know you've got 'em. Cannot remember how much.TimmyC has a good heat exchanger and jabsco pump is the easiest to install and has great reviews
If you have to upgrade the injectors I'd go with the lower pulley.What injectors is everyone upgrading to? Is there a point to choosing the 17% upper over the 27% lower pulley if you have to upgrade injectors either way?