EVO 16G Fueling?

[ZeroZ95TSI]

Ello Tuners! I have a 90 GSX that i just recently installed an EVO 16G in with GT Evo Manifold and its a great setup... I am running 10 psi for now until i know i have all supporting mods. the rest of the car is stock. my fuel system defintely needs to be upgraded and i have a walbro 255 laying around but im new to the whole fuel area. If i put the 255 on with the stock 450cc injectors would this make a good effect or would there be too much fuel considering i have no way to tune a/f because of the stock FPR. i know i could get a walbro 190 and put that in but is it better for me to just get a adjustable FPR or a safc? im retarded so dont hate too much. just need suggestions.

 

[GVR4592]

The best way to go would be install the Walbro 255, rewire the pump, get an adjustable fuel pressure regulator, injectors(550 or 650), and the Safc or Dsmlink.

If you can't afford all of that, you can do it all in stages.

 

[power=dsm]

keep the boost low.

If money is an issue i would
1-rewire stock fuel pimp
2-get logger/safc
3-raise boost
4 save for 255 and injecorts

 

[2gGSX]

With 660cc injectors you could get away with a rewired walbro 190 for your application. However if you are going to stick with 550cc injectors for whatever reason, then an enormous fuel pump (255hp or supra) and an AFPR will be your best bet since it allows you to raise base fuel pressure enough to keep IDCs low.

 

[TSIMonsteR]

First, for you, I'd work towards getting DSMLink to log/tune with. It will make you happier in the end then just a SAFC. After DSMLink the sky is the limit as far as injector size goes, you could make 1000cc injectors idle like stock. Definately get an AFPR with a gauge, seems like the IE kits they advertise on this site is a good deal. You get the proven Aeromotive AFPR, braided lines, and a gauge for $200 or something. Anyway, so here is my order for you

1. DSMLink (ECU + software) FFWDConnection sells them both
2. AFPR and install that Walbro b/c now you can controll it.
3. Injectors, with link, I'd go ahead and get something big, that way you want find yourself wanting more in the future. (anything from 880cc to 1000cc or more if you want)
4. Turn that boost up, and you'll be one happy camper.

 

[Ultimatedsm]

All of you forgot something, yeah sure EVOIII 16g with some 650's and turning up the boost will make great power with a good tune. However, if you still have the stock pressureplate assembly in there, it will start to slip very easily when you start turning up the boost. I recommend at least a ACT2100 or the equivalent to that. The ACT 2600 is your best bet though overall. Remember to take everything into consideration when you are moding your car, engine, fuel, drivetrain etc.

 

[CanadianTSi]

If you never plan to go faster than mid 11's at 121ish then you could sell the 255 and put in a 190 which doesn't require a AFPR, save yourself some cash.

 

[darrennovacek]

so if i understand this correctly someone that on a tight budget could get a set of 550 or 650 injectors and a 190 lph pump and they wouldn't need to get a pressure regulator or logger of any type? my t25 took a dump and i'm buying a evo 16g to replace it with but i want to make sure that i get all the supporting mods taken care of. this is my daily driver too so what type of boost levels should i stay at with this type of setup?

or would a better setup be to get the injectors, 255 pump, and dsmlink? would this also need a fpr?

thanks, darren

 

[chicagoavenger]

so if i understand this correctly someone that on a tight budget could get a set of 550 or 650 injectors and a 190 lph pump and they wouldn't need to get a pressure regulator or logger of any type? my t25 took a dump and i'm buying a evo 16g to replace it with but i want to make sure that i get all the supporting mods taken care of. this is my daily driver too so what type of boost levels should i stay at with this type of setup?
thanks, darren

you want a logger to tell you what's going on

 

[daren_p]

so if i understand this correctly someone that on a tight budget could get a set of 550 or 650 injectors and a 190 lph pump and they wouldn't need to get a pressure regulator or logger of any type? my t25 took a dump and i'm buying a evo 16g to replace it with but i want to make sure that i get all the supporting mods taken care of. this is my daily driver too so what type of boost levels should i stay at with this type of setup?

or would a better setup be to get the injectors, 255 pump, and dsmlink? would this also need a fpr?

thanks, darren

Correct on the injectors (but lots have maxed the 550's on the evoIII, so go 650's if your running a piggyback system, or larger if your dsmlink or standalone) and the 190 pump without a AFPR but you still defently need a logger otherwise you have no idea of whats going on. Your bottom setup is defently a better way to go and will be easier to tune & make more power with plus will accomidate a larger turbo if thats what you want in the future but isn't needed if you don't ever plan on going larger then the evoIII or are on a tight budget.

To the origional poster if you want to install that 255 pump you defently need an adjustable FPR as it will overrun the stocker, causing a non linear rich condition. What are your future plans? If your going to stick with that turbo get the 190 pump, 650 injectors, SAFC and a logger and call it a day.

 

[DSMvroom]

. . . put in a 190 which doesn't require a AFPR, save yourself some cash.

This statement is ARGUABLE, because it holds true and false for many. Also I believe that for those that it holds "true" for, I presume the fpr is still being overrun to an extent (albeit un-noticed by the driver).

 

[MidNight372]

If your going to stick with that turbo get the 190 pump, 650 injectors, SAFC and a logger and call it a day.

with running this setup what can you safely turn the boost up to?

 

[chicagoavenger]

with running this setup what can you safely turn the boost up to?

again get a logger and find out each car is different

 

[MidNight372]

well i was just wondering since i might be picking up all those parts and figured id see what most people have safely boosted at.