Changing from 750cc injectors to 1000cc's... what to change? - SRT Forums

Dasstrum · 10-02-2009, 08:56 PM

Nutz said he would answer this for me, so I am posting this up to let everyone else having the same question get answered.

I am going to be upgrading from 750cc injectors to 1000cc injectors and need to know what to change in the map.

Also, wanting to know if anything needs to change if I upgrade to duel walbro fuel pumps.

Thanks!

nutz · 10-04-2009, 02:29 AM

there is a function that calculates PW changes when injectors change. you will need to know what you had and what you are going to, it is very important that you realize that not all injectors are rated equal (different test fluids create different flows) so from manufacture to manufacture there will be some discrepencys but usually they can be taken care of with a global % change of the whole map. it is also important to know what injectors you have and I would STRONGLY SUGGEST selecting ones that AEM has done the inj batt offset testing on !!!!!!!! (just pick a set from the wizards) I know some of the marketing on "new" injectors are illureing but they are also misleading (keep that in mind)

lyncoo · 10-04-2009, 02:33 AM

i was just gonna say tune

nutz · 10-04-2009, 02:36 AM

GO TO THE FUEL MAP ...right click>change injector/pressure

put in the old size at rated and the new size at rated

I would advise not to play with your fuel pressure just yet first get the injectors set up

when you are done it will ask you to select the aproprite injectors from the list (BUY INJECTORS YOU CAN USE)

nutz · 10-04-2009, 02:40 AM

Quote: Originally Posted by lyncoo

i was just gonna say tune

the EMS has so many advanced features its crazy (tuners paradise)

but yea after any changes you will need to re-tune a little bit but if you know how the math is done with the EMS (MB/SEC) you will know where to go, its too much for me to try to explaine so I stoped trying as I think I may cause more confusion (most get it after a few maps)

nutz · 10-04-2009, 08:09 AM

if you must use fancy off brand injectors do this>> AEM will response test your injectors for FREE!

amdguy · 10-07-2009, 05:12 PM

also, if you call the people who make the injectors (IE Fuel injector clinic) they may already have the info you need. i know my 900's from FIC came with it.

never2muchboost · 10-07-2009, 06:01 PM

keep in mind some companies flow their injectors with gas and some use heptane and there is a distinct difference in flow between the two