i have an MG zr+ 115 it has a mafam thing on it that is adjustable. this was fitted by a previous owner and i have a 'basic' understanding of it.
i opened the bonnet while the engine was running and a frind asked what it was, i gave this brief and basic explanation..... and then he lent over and adjusted it....
anyway, i turned the engine off, but couldnt remember where it was so put it back roughly. but now it feels underpowered and smokes alot :/


HOW do you reset one of these and how do u set them correctly???

 

You take it off, chuck it in the bin and put the standard bits back on. It'll run better and probably use less juice too

 

i take it you dont know what that box is then :')

 

do the instructions on the box itself help?

i would set it to the minimum and adjust it one click (or whatever it moves in) at a time until you reach the best setting before it starts declining again. then keep your mate away lol

 

It compensates for the poor signal given by the OEM MAF sensor. Mate of mine ran one and it made a big difference, it was on a diesel MG and it ran great after a few test drives and tweaking of the dial (which basically just amplifies the signal from the MAF and then gives that to the ECU). Either play with the dial and tweak it till it runs nice or get a new MAF and remove the amp thing. After a while your new MAF will probably start to die though, hense the amp thing was invented!

 

its a replacement maf basically
ive been told that i have to put it to minimum and then increase it slightly until i no longer feel any benefit.