Just fitted a new/second hand metering head...

[Bora Bora 0]

...to my valver.

 

Noticed it starts better, runs better but according to the MFA I am generally getting about 5 miles less to the gallon!

 

 

Any advice???

[CoxyLaad 0]

put the old one back on lol

[aide 0]

if you did it yourself, have you checked the control pressure and mixture - as these will need to be set up too.

 

re the MFA readings, they're usually pretty balls anyway!

[Henny 0]

check that you've not knocked one of the vacuum pipes off the bottom of the airbox. Also, have you had the CO emissions setup? The new metering head won't be setup to run efficiently with the rest of your injection system so may be running rich... 8)