65lb injectors on a 4 cyclinder

tyrone27 · Post by **tyrone27** » Sat May 20, 2006 12:09 pm

Have a 1.8 16v motor and wanted to know if MS-1 will Idle 65lb high impedence injectors?

Bernard Fife · Post by **Bernard Fife** » Sat May 20, 2006 12:13 pm

Tyrone27,

See this: http://www.megamanual.com/v22manual/mtune.htm#idlepw

Lance.

tyrone27 · Post by **tyrone27** » Sat May 20, 2006 12:33 pm

from what I'm reading I don;t think it can.

Karl_Skewes · Post by **Karl_Skewes** » Sat May 20, 2006 1:22 pm

2sq alternating and i think you can do it.
problem will be that it'll idle around 12:1 if you want it stable... and there are points on the ve table where you want less than idle fuel... this is going to be more of a hassle if you want perfect afrs.
If you're ok with sacrificing this, then go for it. I assume you're going for some big numbers on this motor?

fwiw: i ran 550cc injectors on my old turbo 1.6 ok.

BSVW8VT · Post by **BSVW8VT** » Tue May 23, 2006 8:36 am

Tyrone,

Why are you going with such a big injector? What are your plans for that Scirocco man!

keithmac · Post by **keithmac** » Tue May 23, 2006 11:36 am

I run 500cc/min ok, there`s a version of extra with hi-res code floating about and it makes a difference. 65lb`ers are on the large side for a 1.8!

mobythevan · Post by **mobythevan** » Tue May 23, 2006 1:19 pm

FWIW I run 850cc injectors on 2.0 liter 4 cylinder and it behaves just like stated below. Idles around 12:1 or a touch richer, but idles good. I smoothed the VE table around idle and I don't seem to have a problem with it so far, but definitely tougher to work with than smaller injectors would be.

2sq alternating and i think you can do it.
problem will be that it'll idle around 12:1 if you want it stable... and there are points on the ve table where you want less than idle fuel... this is going to be more of a hassle if you want perfect afrs.
If you're ok with sacrificing this, then go for it.

tyrone27 · Post by **tyrone27** » Tue May 23, 2006 2:52 pm

i'm planing on pushing 350whp.

cododgeneon · Post by **cododgeneon** » Sun May 28, 2006 6:57 pm

im running 730cc injectors on a 2.4 with no problem, idle kinda jumps around but im fine with it.