Ask whoever is going to tune your car about injectors.
I don't recommend using a generic map though. Especially not on a custom built car - factory RS2 is a different question.
But generally no injectors are really too big, as long as they are linear at low pulsewidths. Even 1000cc are fine.
Siemens Mototrons tend to be nice early on, but later on they tend to develop a really bad spray pattern (it's more like pissing, than spraying really) at low pulsewidths after a while, so you get misfires at idle. The manufacturer does not specify them below 1.5ms, but you need to run 0.8 at 4 bar fuel pressure...
Same issue with various Delphi disc type injectors - run fine on load, but car misfires on idle when hot.
I don't recommend using a generic map though. Especially not on a custom built car - factory RS2 is a different question.
But generally no injectors are really too big, as long as they are linear at low pulsewidths. Even 1000cc are fine.
Siemens Mototrons tend to be nice early on, but later on they tend to develop a really bad spray pattern (it's more like pissing, than spraying really) at low pulsewidths after a while, so you get misfires at idle. The manufacturer does not specify them below 1.5ms, but you need to run 0.8 at 4 bar fuel pressure...
Same issue with various Delphi disc type injectors - run fine on load, but car misfires on idle when hot.
Comment