my 502s on my baja342 are only reving to 3900, ive now found out ive got 26 inch bravo 1s instead of 28s my mistake help please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

When you posted last thread you thought you had 28's,it doesn't really matter,what you need to do is try a set of 23's then a set of 24's if your rpm's are too high,Smitty

smitty yep ive mucked up there 26s on the boat,gonna try a set of 24s but reckon there to small,found out the boat was supplied with 26s past owner saw 70 out of it im sure it could be mechanical

Are your thottles going all the way open?
I had a similar problem after I did a winter tune up and had 2 of the plug wires crossed.

thanks how do i check?