Mild flat spot, 1500-1800 rpm...

[38Blackfin]

Originally Posted by JackandJanet

Great mileage! I get 15.1-15.5. I don't have your "flat spot". I wonder if the Torque Converter is locking up too soon? Have you monitored that? And if it is, you can adjust the part throttle lock/unlock points in the Custom Options.

I also don't have the spark knock at hot start or the "lean smell". I doubt this is a significant worry, since it is a fairly momentary condition.

Did Bill try to write you a tune to maximize economy?

I really only worry about spark knock under load, or at cruise.

- Jack

Mine's 2wd, and 60%+ of my miles are highway.

Bill wrote me an 87 tow and an 87 performance, happy with both. I'm not getting any pinging underway. I'm about 2000 miles into a Mag SISO, so I'm hearing a lot more than I used to.

I don't run my Gryphon plugged in, so I don't have any numbers. When I searched, CHT came up as a way to monitor lean-ness. Anything else to look for?

Thanks, JnJ!

Randy