yo was up everyone! i need to know what size are the stock fuel injectors on a 2003 evo 8. i have looked every where and cant find any info for it. can someone help me with this. i'm getting ready to tune my evo.

 

560cc

 

ok so there are 560cc. ok then. well i want to upgrade them, but the guy that is going to install them said that i will need like a fuel system thing like a program or else my car will not start. is that ture bro?

 

How big? Injectors need to be scaled. I installed larger ones on mine without being scaled and it turned on fine.. All you need is a new 255lph fuel pump with larger injectors, and definately a tune

 

i was thinking about going with 850cc.

 

yeah your car might start but it wont run properly you need to scale those injectors by using ecuflash...

 

im tossing 1000cc's into mine and its a must to get it tuned to right correctly(duty cycles and what not).

 

ok, but if i dont want to use 850cc, what kind of injectors should i go with that my car will start. bc the day i install the injectors will be the same day i will get it tuned. could i go with 650 or 750cc?

 

you could try. it is just not recomended. Your injector latency and scaling needs to be tuned. 750's aren't gonna help u much if ur upgrading ur turbo. may evo's use 880's, 1000's or sometimes even bigger to run e85

 

Whats done to the car to need bigger Injectors?

 

+1

is there a reason you are switching?

 

no i'm not upgrading my turbo yet. i have the big 16g turbo on my evo, not the little 16g.

 

installing a walbro 255 fuel pump, greddy boost controller, evo 9 metal bov. i might be pushing between 21-26 psi.

 

i want to have some better injectors before i tune my evo

 

bigger doesn't mean better it just means bigger...for what you are doing stock injectors are just fine