CSX3170 in Scottsdale

[Cobra #3170]

We got taken out early this year, they said a pylon was wiggled. I did not see it but it could have been the exhaust. We really had no business there anyway because both the engine tune and car set up were way off. My use of needle bearing thrust washers in the rear upper arms took all the friction out of arm movement. That is a good thing but it changed the balance of the car and caused understeer that we did not have time to fix. We were struggling with the EFI tune both days and never got rid of acceleration stumbles. The engine had a fuel air ratio of 10 to 1 above 7000 and although we made some gains and were competitive the car was way off its potential. The tune was so bad I had a friend with a twin turbo LS help me clean it up but it needs lots of work. We need to try speed density. I also want to install 50 pound heavier rear springs to fix understeer. We increased rake angle to 1" but that just was not enough to get understeer under control.
One of our competitors hit the K rail and pretty much destroyed his car which seemed to adversely effect Scott, because the Cobra is pristine again.
The engine has potential and sounds good as you can see from this video so we should be competitive next year, it touches 9000 twice in the video. We just need to get the tune fixed and get the handling right again. Even as bad as the car was I think we could have set fast time had we not been eliminated by the "wiggled" pylon. Goodguys should adopt the SCCA rule where if the pylon is down or out of the box drawn around it they count it not so arbitrary.



https://www.youtube.com/watch?v=53YO...I4J89NccUhpJ1Q

































in place of alpha N tuning