Help - Driving me crazy.

Car setup.

2003 AP1 with Greddy Turbo / emanage ultimate piggyback.

I cannot get reading past 44 mph from the ODB connector. The Honda ECU reports only from 0 - 44 mph. Even you go faster than 44 MPH and doing 55 MPH, the dash will show 55 MPH but the reading from ECU says 44 MPH. If I plugged in to the Greddy emanage USB port , it reports the whole range.
What am I missing here ? At first I thought the soft top mod is causing the issue here but I put the VSS wire back in to the soft top module and still no success.

Changed different programs and ODB hardware too. Works with other vehicles.

Any help will be appreciated.

Thanks.

 

Moved to UTH forum.

Loose ground wire on the back of the head is the number one cause of speedo issues.

 

EMU makes the reading from the OBD port stop at 44mph. I had the same thing going on when I had my Greddy turbo kit.

 

Really ... Wow.. I got the software developers scratching their head wondering why the software not working. Everything else works. Just the MPH stops @ 44 MPH. And here I thought it is just a piggy back EMU. Thank you so much.

 

I think mine may have actually stopped showing anything above 46mph iirc.