had my s1 rolling roaded and they said boost peaked at 15psi
then dropped to below 10psi ,it is a -31 but a bit weak now i think,
if i put a new -31 on is it a case of measuring bar against old 1 to get the boost right till i can get it back on rollers
cheers in advance

 

if i put a new -31 on is it a case of measuring bar against old 1 to get the boost right till i can get it back on rollers
cheers in advance [/quote]

IF IT'S WEAK THEN IT WONT BE THE SAME AS A NEW ONE M8!


so set it low till u have it set up properly

 

If you've had it rolling roaded and the fueling was fine throughout, stick on the new -31 and set it at half a hole pre load......

road test it and then keep adjusting the rod until you get back to the requirted held boost as before........

sorted

 

^^ what he said. just make sure you aren't using a TIM gauge etc