GUYS!! I went to buy that today, but the bloke at PJ's, said that it would be pointless because they run hi 16's 20s and go up to 30psi, as mine is standard and hasnt had the ecu chipped, i need a standard one for now. If i was to get the -31, the ecu would step in every time i plant it and cut it out, which means it wouldnt be running proberly. Can i just fit the cossie one and hope for the best?

I need help guys, im getting told one thing and another by others!