Originally Posted by F-BIRD'88
The WOT afrs look ok. For this one test.
It shows you are in the ball park @ WOT. But drag testing (MPH) will show you what WOT jetting
works best. (The afr gauge is just a guide) It is just one of your tuning tools. There is no perfect WOT AFR to target. Some engines like a bit more or a bit less WOT jetting. Thats what drag strips are for.
Try the new jetting I recomended for the 600's and tell me how it does.
Will get back on it tomorrow and change the jets as u suggested. Not sure when I'll be able to try them though. Gonna be a cool rainy week.