Originally Posted by
rstdave
I tried venting to atmosphere when i was on mfi by blockin off the hose to the metering head and my car didn't seem to like it, i know alot of people have said they do it tho so don't know why mine played up....was fine when i vented it back through the metering unit tho so never saw any reason to change it!
what was it doin that it didnt like?
would that not get you thinking that maybe theres a prob elsewhere on the system or car,maybe a rr set up would have shown this up when vented to atmo