11 pro still bogging Please Help

[murray49]

GENTS....Did anyone figure out a final solution to the top end bog issue? I am down to pulling my motor (08 Dragon) to test my bottom injectors. Limits RPM to 6800. lots of zip to 7200 and then falls off like the bottom fuel rail is not providing the needs. |If you found anything, others would appreciate knowing. Cheers.....

 

[xc6rider]

Injectors flowed and tested fine!
My exhaust valves are opening fine as well. I put 1/4 in fuel line on the stem of the valve so I could watch them open!

I am starting to think mine is over revving and the ECM is closing the valves to control the rpm's. It's clutched for 8000'+ and I'm at about 600', the thing is it did this at 10'000 last spring in Colorado.

If you were clutched for 8000', and running at 600', the weights will FOR SURE cause an over-rev bog. You need 10-68's at this elevation.

As for 10,000' youll want 10-60's

 

[OrangeKowJumper]

Injectors flowed and tested fine!
My exhaust valves are opening fine as well. I put 1/4 in fuel line on the stem of the valve so I could watch them open!

I am starting to think mine is over revving and the ECM is closing the valves to control the rpm's. It's clutched for 8000'+ and I'm at about 600', the thing is it did this at 10'000 last spring in Colorado.

Your doing exactly what I was doing..sled was clutched for mtns- 8 to 10k- and I was running it here in Iowa and it would cut out on the top end . ...posted the issue here on the forum and had several guys saying underclutched. .. ..simplest fix I've had to undertake in a while. . went to the shop..swapped out some 11-66's I had laying around and problem solved .. ..get some heavier weights in it if yer gonna run it here in the flatlands. .