The really big gains come from running an air cleaner.
The filter is blocked by the stupid choke horn sticking up there. It plays hell with the air bleeds.
I was taught how to remove a choke horn without a mill in 1981. I could tell a difference just backing out of the driveway. Driveability was so much better with the choke horn gone.
Ironically, it was a 4777 I bought new earlier in the summer.
