Injector size needed

[97 TSI fwd]

I am very new to the forced induction world as well with DSMs.
I want to run a Evo big 16 but have no clue what size injectors are going to be needed for this. I am only looking to run 16-18 psi. I do already have the fuel system and management system ready to install but need the advise on injectors. Any help and advise will be greatly appreciated.

 

[JayRolla]

I am very new to the forced induction world as well with DSMs.
I want to run a Evo big 16 but have no clue what size injectors are going to be needed for this. I am only looking to run 16-18 psi. I do already have the fuel system and management system ready to install but need the advise on injectors. Any help and advise will be greatly appreciated.

The kind of engine management you have will help in telling you what size of injectors. If you have injector compensation I would say 850-1200cc injectors, 850's if you plan on only pump gas and larger if you plan on e85 one day.

If you dont have compensation I would say 650's would be perfect.

 

[turbosax2]

What fuel management will you be using? A good rule is to get as big of injectors as you can that your fuel management system can handle.

 

[97 TSI fwd]

i just reciently got the latest dsmlink system. i have not completely read through everything quite yet to find out what size's it can handle up to.

 

[bxxsted]

I agree with the 650's. Should have no fuel problems for quite a while with those.

 

[turbosax2]

I would get upwards of 1000cc's with dsmlink. Specifically, I would go with FIC 1150's.

 

[JayRolla]

I agree 1150's, but I would at least run a 255lph FP with those. This way you dont have to upgrade and e85 friendly.

 

[97 TSI fwd]

i do already have the walbro 255 but have not put any of it on. i am waiting to try and do it all at once.

 

[hypnoticpimp]

If you plan on upgrading the turbo and shoot for some seriouse power later on i would suggest buying the largest injectors you could afford...If all you plan on doing is staying with the 16g then 650/680's will do...

 

[chodaboy3545]

+1 on the 1150's

 

[Gooberlog]

850's, 1000's???!?!?!?!?
REALLY?
By the sounds of it, sounds like he is planing on running just the 16G turbo and for that turbo i would use 550's or 660's at the biggest. Injectors are easy to swap out if he upgrades down the road and the 16g should come no where near maxing out his IDC on 660's. I ran 550's on a ported big 16G but i did have a high IDC so i would go with something close to a 660 or 680.

 

[Gooberlog]

...look at JayRolla's vehicle profile,
He's telling you to use 1150cc injectors yet he runs 550cc's on his 16g

 

[turbosax2]

Easy to swap? Yes. Expensive to swap? Yes. Why not upgrade big now and never again?

 

[talon187]

i wouldl also say get a wideband. i got for free 550s or so i am told thats what they are. but i ran 25psi on my 16 and still had plenty of fuel let over but 650s should be plenty of fuel for the 16g