Lots of codes.

[accomotors]

Hey folks,

So we have returned from a somewhat successful weekend at SMSP at the start of March, but the car is not without it's problems. Apart from me leaving the bonnet pins out and smashing the windshield (among other not-so-easily replaced panels), the car is now sporting a rather strange loss of power.

It is not a complete loss of power a such, more a gradual slowing/reduction in performance. I first noticed it after an hour long event, where during the final 10 minutes the car seemed doughy and lacking. We replaced the plugs/coils just because, but the problem seemed the same in the next race (roughly same time before problem, ~50 mins).

The car is always full of fuel, but no longer runs the factory tank but a fuel cell in the trunk.

Attachment #1 is the log from before the final race. Attachment #2 is mid-race. Attachment #3 is 20 minutes later, same race.

We brought the car into the pits, and I read and cleared the codes. The car would run race-best laps after each code clearing procedure and be running like a dream, but would then drop off in pace and begin lacking in power again. This leads me to believe that it is not a mechanical problem, but some sort of tuning/coding problem.

I have since invested in ProTool as a means of coding out some of the unwanted features, and hopefully getting to the bottom of this problem.

From what I can see on the codes:

It recognizes that the fuel level is low, because the factory wiring does not exist any more. Would this be causing it to go into a low-power mode to conserve fuel?
It is misfiring on Cylinder #2 (and this is confirmed audibly as during the latter stages it was noticeably on 5 cylinders at full noise, however idled and revved without load on 6). This was even after replacing all the plugs/coils.
It shows a DISA code? I don't know enough about all this?

Given that it is a completely foreign fuel system (albeit with no previous problems), could it now be seeing fuel pressure or volume too low?

Attachment #4 is a scan I did on the new ProTool, at idle in the workshop.

HELP!!

I will be back at the track early May for a tuning day, in the hope of running all day and getting to the root of the problems.

[Dru128m]

After 50 minutes of racing, could it be a heat soak issue? Car thinks intake air temps are through the roof and starts to pull timing trying to prevent knock. I'm no real expert, just trying to help.

[accomotors]

Appreciate your reply.
I did think the same thing, but disregarded it due to the problem disappearing when the
codes were cleared mid-race.
It could still be an issue, but has never been a problem in the past (up to 6 hour with only stops for fuel).

[dtla1]

Beyond the EKP thing I mentioned in the other post you made, and sorry, I don't know if protools has the option to code the EKP, have you disabled some of the safety features?

There's this thread: https://www.1addicts.com/forums/show....php?t=1216642

Which points to this blog: https://web.archive.org/web/20160325...w-actually-fun (web archive link because the original is gone)

You'll notice the first thing they recommend disabling is called "Engine Power Reduction to Prevent Brake Disc Overheating", and there may be other clues in there too.

But this ignores your other codes for misfires and the such, but still might be a decent clue.

[accomotors]

I had a better look through ProTools today, and it seems it has the ability to do heaps of EKP stuff. More on that on the other post.

Further to disabling the 'safety features' you have linked to above, I found the page on the program which allows for the disabling of these. They are now all turned off, and I am hitting the track again on May 3rd to see what new problems I can find, LOL.