Guess that tune!

[LTHatch]

250/235 must be one heck of a fun go kart to drive, were these numbers with the destroyed cat choking your turbo? Does she have more in her on a pump gas tune or is the 15.5psi about the limit?

Can't wait to see what you'll put down on race gas, its going to be a rocket!

[fnkngrv]

Originally Posted by LTHatch

250/235 must be one heck of a fun go kart to drive, were these numbers with the destroyed cat choking your turbo? Does she have more in her on a pump gas tune or is the 15.5psi about the limit?

Can't wait to see what you'll put down on race gas, its going to be a rocket!

We are figuring that it will have more for power to give with pump gas once we get the new TB in place. My turbo is good sized and spools pretty quickly. The tuner made things conservative with the 15.5psi tune since he wasn't involved in the build itself. He honestly doesn't want to turn the boost up much more anyway because he doesn't like log manifolds. With this being such a different build that he normally deals with he isn't sure where we will start coming up on the back pressure that can occur.

This tune is great for the street already honestly. With how the EFR reacts I can easily have smooth acceleration or hit it hard and launch quickly.

In hindsight I am almost wishing that I went with the 62 rather than the 67. Only time will tell.

IAT temps were sitting right around 90° which was good to see. Also the temps showing between the stock coolant sensor and the gauge sensor on the upper egress piping stayed consistently within 1-3° degrees of each other.

By the time I left Friday it was actually going on 10pm. The tuner skipped out on family time for me when most other folks would have buttoned up the shop well before then, but that is one of the reasons why I go to them. I felt pretty bad to be honest, but we had attempted to dianose the boost issues all afternoon. Their dedication to getting the job done. We are still tweaking the tune as the days go on even. He will connect to me remotely and check out the logs too.

Perhaps as time goes on we will turn the boost up more, but I am already enjoying it where it is at. Not to mention what could happen to the stock transmission. I don't mind putting another one in, but would prefer to not have to before the Main Event.

Another thing to remember is that psi alone doesn't equate to power.

May have to be concerned about seals/gaskets too especially running over 6k rpm for long as do.

sent from my m-o-b-i-l-e

[fnkngrv]

Originally Posted by LTHatch

were these numbers with the destroyed cat choking your turbo?

No these are the numbers now. We were only able to make 2 pulls prior to the clogging issue. Those were at 10psi roughly and had made around 212/204.

sent from my m-o-b-i-l-e