Hondata

I have a problem about incorrect VSS over 160kph(100mph).

Please see attached fpdl file.
I took this log file at Fuji Speedway, Japan. Actual max speed was 216kph(134mph) but FlashPro calcurated same value over 160kph(100mph).

I confirmed 180kph on genuine speedometer. It's limited until 180kph on JDM S2K so it can't indicate over 180kph on speedometer.

Thanks.

Does the cluster speed show correctly over 100 mph?

Yes, the cluster speed show correctly until 180kph(111.9mph).
I checked the vehicle speed by GPS logger (Driftbox).

I attached .fpcal data for further information.

Is anything connected to the wiring of the car that might interfere with the VSS signal?

We've tested the JDM code in a US ECU and that works to 255 kph, so it probably is the JDM ECU itself.

Probably nothing is connected to the wiring of the VSS signal (transmission pick-up sensor to ECU wiring). I bought secondhand S2K and I don't know everything of my car.

The gear position is also incorrect, so I think ECU actually calculate this VSS value. But it's very strange that ECU work only up to 160kph...

You probably have a speed limit removal device installed on the car that is interferring with the the proper speed signal.

https://www.google.com/#q=jdm+s2000+speed+limit+removal

I took off the upholstery near ECU and looked around. I found speed limit removal unit!

Thank you very much!!!

Glad it is fixed; thanks for the follow up.