2G Injector Size

[97 gst turbooo]

Alright some ive been doing some reading but its a toss up. I have a fully ported SBR evoiii 16g turbo with a ported sbr manifold with external wastegate. Im planning on running 16psi with dsmlink which is on order. I have a 190 walbro rewired and are looking for some better injectors. I was leaning on PTE 680's but ive read there more like 650's.
The 550's i heard were maxed out and needed more fuel? Im waiting to order dsmlink to find out what are the best injectors. What do you think are the best for my e316g when my motors built im going to run about 22-24 psi so i want to get the best injectors and not have to buy new ones when i raise the boost. Thanks for any help.

 

[snowborder714]

If you're going with DSMlink, order as big of injectors as you can afford. This way, when you upgrade from the EvoIII to a bigger turbo, you won't have to change out your injectors. I'm running FIC 1150cc with a small 16g and it idles just like it did when I had the stock 450's in there. I wouldn't go over 1150cc though as the 1600's are hit or miss if you can get them to work right.

 

[welfle18]

It all depends really on what your goals are for the car. If there is any chance of ever going big with the turbo I would get the bigger injectors like stated above, but if you can afford it I would get the bigger fuel pump and an afpr along with it. Then these are all things that you wont have to upgrade in the future if you do decide to go with a big turbo.

 

[Dsm2nr89]

Just like what everyone else says. Depends what your future plans are for the car. If you decide to keep the turbo and run that amount of boost i say a set of 650cc and a 255 will be suffice.

 

[97 gst turbooo]

Well to let you guys know i alreadly started buying parts for it but im doing a rebuild over the winter so the e316g is only for this year. Im going to do a 2.3 stroker with either a gt35/37 or a fp3065. and i plan to run decent boost when its built and money isnt a issue for the injectors. i heard it was tough to tune large injectors on a safc but since im going to be running dsmlink i was told it shouldnt be a problem. I plan to run maybe 23-25psi on the built motor daily. Should i go with some PTE 880's or smaller/larger? any help works. I only know engine mechanics and HVAC when it comes to fuel and a few other things im lost. thanks.

 

[hereitcomes]

why does everyone insist on upgrading to a 255 pump as well. A 190 is plenty of fuel. You can run 20lbs with supporting mods all day on it. Not even close to maxing it out, and you dont need an AFPR with a 190.

If your satified with the e3 16g I would say go 680cc, and DSMlink will take care of the rest. Thats quite a bit of fuel. Good luck man.

 

[2gGSX]

why does everyone insist on upgrading to a 255 pump as well. A 190 is plenty of fuel. You can run 20lbs with supporting mods all day on it. Not even close to maxing it out, and you dont need an AFPR with a 190.

Well to let you guys know i alreadly started buying parts for it but im doing a rebuild over the winter so the e316g is only for this year. Im going to do a 2.3 stroker with either a gt35/37 or a fp3065. and i plan to run decent boost when its built and money isnt a issue for the injectors. i heard it was tough to tune large injectors on a safc but since im going to be running dsmlink i was told it shouldnt be a problem. I plan to run maybe 23-25psi on the built motor daily. Should i go with some PTE 880's or smaller/larger? any help works. I only know engine mechanics and HVAC when it comes to fuel and a few other things im lost. thanks.

The OP is going bigger, and I for one would rather just do the fuel pump once and get it over with.

Furthermore, a 190 won't even keep up with the 650's if you run 20 psi.

 

[dsm-onster]

Although I agree that he definately needs a walbro 255hp and an adjustable fuel pressure regulator and should go with 1150cc injectors for his future goals. . . However, the non-highpressure walbro 190 rewired flows 161 lph at 20psi boost and 43 psi base fuel pressure. That is good for 425 crank horsepower at .60 brake specific fuel consumption. 650s at 43psi base fuel pressure and .60 bsfc is enough for 413 crank horsepower. They both reach their limit within about 10 hp of each other.

He has a rewire, but does he have the high pressure 190 or the standard 190? If he has the HP 190 then he has enough pump for 450 crank hp at .60 bsfc.

 

[2gGSX]

I've never seen anyone use the high pressure variant of the Walbro 190 on a DSM application (this is actually the first time I've even heard of it).

While the OP does have the pump rewired, I don't think it's safe to assume that he is actually getting 14V to the pump by 6000 and up, where the alternator really starts having problems keeping up.

 

[dsm-onster]

I see 13.9-14V at redline according to my scanmaster that is accurate against my voltmeter while free-reving in park. The grey lines on those graphs show flow at 13.5 volts. The non-highpressure walbro fed 13.5V is good for 425 crank horsepower at 20psi boost and 43psi base and flows more than 650s at 43 psi base.

APE sells 190HP kit packages. They've been doing it for a while.

 

[97 gst turbooo]

Thanks for the information. I have a 190lph non high pressure. The only reason i bought this is they said it was good for the e316g and it didnt require afpr and thats why i bought it, I never saw a 190hp option when i was buying it, only a 190,255,255hp. On the e3 i plan to shoot somewhere around 300whp with some more goodies done to it. So i think ill just get some 650-680cc and worry about bigger injectors when the motors done. Now any preferred injectors, I was leanin towards pte 680, but what about others? Which are the best brand.

 

[2gGSX]

PTE, FIC, RC are all fine in my book. I personally use FIC's.

 

[snowborder714]

I personally use FIC as well. They have been recommended to me by many different shops. I have nothing against PTE though and have heard good stuff about them.

 

[dsm-onster]

I like FIC aswell. I have their 1000cc injectors. Good service. Fast shipping. The others are fine too. I used PTE 680s with a MAFT for years. I've never heard of an issue with RC injectors. A few locals have used RC injectors with much success.

Again, since you'll be ordering DMLink after you decide on injectors, you're wasting your money purchasing 650s/680s. Larger injectors will be needed for your later build, and dsmlink will allow larger injectors to idle/run like stock. Also, you'll only have to tune deadtime and global once. Tuning large injectors (up to 1150cc) is as eay as tuning 550s.

 

[Talnz167]

I would say 650's are plenty for an EvoIII 16g. I was running 550s on my 'regular' 16g and they're plenty.

What you should ask is what turbo you will get eventually and buy the appropriate size for those.

 

[97 gst turbooo]

Thats what i figured i was told with dsmlink 1600cc injectors could idle like stock 450's. I think im going to just stick witih some pte 880's. That should be plenty of fuel. Should i put the 255hp and afpr in as well with the 880's?

 

[JayRolla]

I would go with 1150's. That way if you want to run e85 if you have it in your area you wont have to upgrade injectors. My brother is running 1000cc's on e85 and a 16g. At 28psi he is seeing 75% IDC's.

 

[dsm-onster]

Why are you scared of big injectors? We keep stating that they all idle like stock with dsmlink and take the same time to tune, with the exception of 1600cc injectors. My FIC 1000cc injectors WITH my fp2x cams and ngk 7s idle down at 600rpms fine. It took the same time to tune these as my pte 680s.

880s are good for only 445 crank horsepower at 80% duty cycle, .60 BSFC, and stock fuel pressure. There's no reason to run a gt35/37 or a fp3065 with that kind of horsepower. They've been pushed farther, but why build a fuel system that needs to be pushed hard to reach your goal. Just use this Fuel Injector Worksheet. This will help you see. 1100cc injectors are good for 550 horsepower at 80%, .60 bsfc, and stock fuel pressure. 1150cc injectors are good for 600 hp at 80%, .60 bsfc, and 46psi fuel pressure. You can raise the stock pressure (43.5) to higher with the neccesary adjustable fuel pressure regulator you'll be getting with the walbro 255hp fuel pump.

 

[97 gst turbooo]

Sounds good to me. I think im set on pte 1000cc injectors. There 309 on extremepsi and it seems to be the best deal. Everywhere else is around 330 for them.