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injector question

Posted: Wed Dec 19, 2007 3:59 am
by miepower
Hi all

I'm running a 2.5 Ljet, so my question - which injector is suitable and be a good upgrade for my ride. M20 24 valve injectors or the M50 2.5 injectors. Would they fit nicely & any possible issues later?

Thanks

mie

Re: injector question

Posted: Wed Dec 19, 2007 10:43 am
by Turbo-Brown
Unless you're causing the engine to eat up more air, there's no such thing as an injector upgrade.

Either get the injectors you have cleaned and reconditioned or find a good used set.

Welcome to the Zone dude :D

Re: injector question

Posted: Wed Dec 19, 2007 11:49 am
by junkjimmy
Dude there was a thread where a man changed his 325 injectors to m50 2litre injectors as they had the same flow rates as the 325 m20 injectors but 4 pintles as oposed to 1 which altered the spray pattern and he claimed gave the car better midrange power

Re: injector question

Posted: Wed Dec 19, 2007 12:03 pm
by Ant
you cant just swop injetcors about dude.

the ECU bases all its fuel calcs on the fuel flow of the injectors it was mapped on.

so ( example )

if @ 5K the engine opens its stock injectors for 10m/s delivering 100cc of fuel to each cylinder.

then you swop in some injectors with a higher flow rate( M50) the ECU will still open them for the same time period but would deliver 110cc/min to each pot, so 10% more fuelling everywhere and the ECU has no way of knowing its overfuelling.

in short, dont swop them out, replace like for like :thumb:

Re: injector question

Posted: Wed Dec 19, 2007 6:01 pm
by junkjimmy
Dude have a look at this http://www.e30zone.net/modules.php?name ... +injectors there is a link off this link to a sight with the flow rates,specs ect for bosch injectors