my standard 2wd saff has started playing about the past couple of days. when its ok it holds 12psi boost but every now and then it seems to drop down to about 6 or 7 psi for a little while and then it will be ok again. any ideas any1 ??

 

help any1 ?

 

you should get it set up anyway so you know its all ok
bet its not been done in years