Hondata

A set of NGK IRIWAY 8 plugs has fixed the datalog issue -even with the ECU case hanging free and ungrounded. Just the same as the un-matched set of Splitfire SF392Bs with one Champion RCY7CC.

I note that the internal resistance of the IRIWAYs is around 6k, whereas the new PFR8Bs are closer to 4k ...

Ok, thanks. All those ground points measure between .01 and .03 V.

This is doing my head in. A motley, well used collection of 3 old, unproven Splitfire plugs with an unknown heat range and one Champion RC7YCC lets the K-Pro work perfectly. The "new" RC6YCs don't. Can't datalog.
The theory of a damaged wiring harness is a very expensive theory, and anyway there is ...

I've located some good old Champion RC6YC (would you believe 11 of them!) at less than $4 each I've bought the lot. I'll see what happens when I get them tomorrow...

As far as I can tell, the engine harness of this car is standard. For instance, it has a plug which connects to the reverse switch on the gearbox, even though there is no power to it or even any wiring to supply it in the fusebox.

5k resistance plugs seem to fix the problem completely, but I can't ...

What shielding would be needed?

Can't find any BKR8EIX, but have been told IRIWAY8 is equivalent. However at nearly NZ$200 a set it's an expensive experiment...

When Andrew Short received the ECU back from America last week he put it in a standard DC5 and found no problems.

I can assure you that grounding the case almost eliminates the datalog drop-out. I assume that this is shielding the ECU internal components. The car is a JDM DC5, one of a limited run originally produced by Honda for the Japanese Production series, chassis number DC5-1011790. They had no internal ...

With the new, updated Kpro board in the ECU we can now communicate with the various laptops. But on engine start, the datalog went offline. The car has been running the same Champion C61 plugs for 8 years or so with no problems at all, including the dyno session, and they are still in perfect ...

Ok I'll check all the grounds and if that doesn't fix it I'll see if I can get a good scope and analyse the signals.

Andrew from RallyAs is organising the repair and shipping. You will have heard from him. I'm not going to add to the confusion by getting two authorisations for the same ECU.
I really wish we could have datalogged it first.
Is the random VSS reading from the EP3 ECU while stationary a matter for ...

While you guys have been enjoying your summer holidays, we've been busy in the cold winter rain!

I took it to Torque Performance, and their XP laptop couldn't find the K-Pro either. I didn't see exactly what the XP computers came up with, but although they detected it, it didn't identify itself as ...

This car has been running fine since its one and only dyno session in 2004. It's possible that some minor changes were made in 2006, but I don't think a PC has been connected to the K-Pro since then. My trusty XP laptop was stolen last year, and the insurance company thoughtfully provided me with a ...

I have loaded the modified calibration and tuned it on the road. Looking at our old calibrations with notepad it is now obvious that when the new version of S Manager was used, temperatures were relabeled from ?C to ?F but the values were not changed.
I have had to reduce fuel columns 1 - 3 by 50 ...