My buddy purchased a used hondata s200 system installed in a p28. It didnt come with a USB cable though. He bought a cable that fit the system at radio shack but for some reason the ecu will not connect to the lap top. He also downloaded Rom Editor 4 from the Hondata web site. Any reason why it might be doing this?

 

u need the one from hondata its one their website and its pricey honestly i bought a motor and got hondata it didt work i thinks its bad and where i live its hard to find someone to tune hondata anf if not that they charge a ton of cash so im moving one going with eZtune

 

so you have to have the cable from hondata?

 

You need romeditor v4 plus a romulator and chip burner to be able to do anything with hondata s200:
http://hondata.com/romeditor4.html

I would suggest upgrading to hondata s300 instead:
http://www.phearable.net/shoppingcar...ade-p-169.html