what CO meter ya got btw

remember a halford 150 quid job machine is totally crap ( no offence and im sure ya already know this )

ive tested one at work then used the sunn mot testing machine and to say it was a bit off is a understatment, my CO was 9%


tbh i think ya ned to see a tuner as for the sake of 70 quid ya can save alot more money, ya might even find its somink silly like oil in the zorst ect