Walbro 190 needed on this system?

[sk8shorty01]

Hello,
I have a 2g talon N/T that i have upgraded with a T25bb turbo specialties (star performance) turbo kit. This kit also comes with an injection block which houses two more injectors (this is mounted just before the intake manifold), an injection/boost control unit, i have purchased a Greddy FMIC and type rs blow off valve, i have a fidenza light weight flywheel, SPEC racing stage 2 clutch, a nitrous express intercooler fogger ring and a 50 shot. I also have a Greddy 3 inch evo2 exhaust from the turbo back, and a Greddy high flow cat. I searched around and im just not sure if the stock fuel pump is enough to do the job so could someone help me out on this? Is the walbro 190 going to be needed on this setup or do i still have room to play with the stock fuel system. I will be running 7 lb. of boost, on all stock internals. Please help me out, dont want to lean out and i want to get the most out of my already purchased parts. Thanks a lot in advance.

 

[VelocitàPaola]

Yes, it is needed. You generall start outflowing the stock pump as soon as you begin to boost.

 

[Blitzeclips]

Well, your setup seems well thought out, but if you want to be on the safe side, just opt for the walboro 255lph pump. I doubt you will need anything more then the 190 though, because you're only boosting 7psi with a rather small turbo. You could actually get away with using the stock pump. BUT, this has been on your car since it was originally manufactured, and feul delivery is very important with a turbo system. Buying a new pump would kee you on the safer side, insurance kinda...

 

[sk8shorty01]

ok thanks a lot for the input. Should i go out and spend the money on the 255 or just stick with the 190. This car is not a daily driver, and is also a show car, just dont want to go overboard or on teh other side, buy something that i will have to replace later on as well. If my future plans involved aftermarket cams and cam gears, and a few other horsepower additives would i need to go ahead and just buy the 255?

 

[sk8shorty01]

Also, would i need to go ahead and upgrade my stock fuel rail and injectors although i have the extra two that are injecting just before the butterfly on the manifold. This is of course related to if i buy the aftermarket fuel pump. In other words could the stock fuel rail and injectors, along with the help of the injection block, keep up with what is needed to keep the engine safe, with a walbro 190 or 255?

 

[cs82685]

ok thanks a lot for the input. Should i go out and spend the money on the 255 or just stick with the 190. This car is not a daily driver, and is also a show car, just dont want to go overboard or on teh other side, buy something that i will have to replace later on as well. If my future plans involved aftermarket cams and cam gears, and a few other horsepower additives would i need to go ahead and just buy the 255?

You might as well just pick up the 255, its only 100 on ebay brand new and is well worth the assurance

Also, would i need to go ahead and upgrade my stock fuel rail and injectors although i have the extra two that are injecting just before the butterfly on the manifold. This is of course related to if i buy the aftermarket fuel pump. In other words could the stock fuel rail and injectors, along with the help of the injection block, keep up with what is needed to keep the engine safe, with a walbro 190 or 255?

The stock injectors are fine up to about 7-8 psi with the addition of something to tune with and the two extra injectors you should be fine until you decide to go higher then where you are.

 

[VelocitàPaola]

Also, would i need to go ahead and upgrade my stock fuel rail and injectors although i have the extra two that are injecting just before the butterfly on the manifold. This is of course related to if i buy the aftermarket fuel pump. In other words could the stock fuel rail and injectors, along with the help of the injection block, keep up with what is needed to keep the engine safe, with a walbro 190 or 255?

That all depends on how big the secondary injectors are. You could conceivably use your stock injectors indefinitely, provided the secondaries can push out enough fuel to compensate. In Corbin's 8 injector setup, for example, he has his stock injectors, plus four more with a similar flow rate (~235 cc/min, I believe...). If your secondaries are 550cc/min injectors, then you'll have plenty of fuel.

You need to think about this in totals; if you have 550 cc/min secondaries with stock primaries, you'll be pushing 2040 cc/min (maximum), which is more than Corbin's (~1880 cc/min), and similar to other setups like the Portfueler system with equivalently sized, but more injectors.

I would suggest the 255lph pump too by the way. For most people, the 255 is more than what's needed, but having more in this case can't hurt (provided you keep a watchful eye on fuel pressures and your fuel lines too, if they're the stock rubber ones).

 

[BigRand]

Just go with the 255......www.extremepsi.com has the fuel pump and install kit for $95 shipped.

 

[sk8shorty01]

Ok thanks a lot for all the input. I think i will just go with the 255 because that makes a lot of sense to just go ahead and get the assurance i need for any future mods i may plan to do. I am just not very "experienced" in the whole fuel area. I can do a lot of other things but the fuel flow is something that i have not previously messed with until now. I am mroe of the body work type of guy so this is a whole new area for me. Rep points for all

 

[GSGoinFast]

Is your block stock? If so, I would be quite cautious when running a 50 shot with 7 psi of boost. That is definitely pushing the limits of our stock block. Have you actually sprayed while boosted yet? Or is this all just being installed and has not run yet? If you have not had this running yet, I would leave the 50 shot and possibly even the sprayer off until you build the block. I would also think that the IC sprayer is a little redundant if you will be running a 50 shot, because the IC sprayer cools the IC and thus the air inside with the freezing cold expansion of compressed gas, but a 50 shot will do the exact same thing plus add the extra oxygen of nitrous.

About the fuel pump, definitely get the 255, there is no sense in taking an unnecessary risk with the 190.

Good luck

 

[cs82685]

I am just not very "experienced" in the whole fuel area. I can do a lot of other things but the fuel flow is something that i have not previously messed with until now. Rep points for all

The fuel system is intimidating at first, but with a little reading, it's actually quite simple, especially the fuel pump. That you can do in 30-45 minutes, a little longer if your like me and drop one of the clamps into the tank and have to fish it out. The pump is very straight forward. As for the extra injectors, I can't really give you any pointers there, b/c I have no experience with that.

 

[sk8shorty01]

As for the 50 shot, i meant just doing the intercooler spray kit, i am not injecting straight into the engine itself, just fogging the intercooler, so there is no harm to the stock block just cooling the intercooler down. Thanks for the tips everyone and i will definately buy the 255 as i can see that will be the better choice in the long run. Again thanks a lot.

 

[sike]

255. The price difference isn't much. I actually picked up a hp255 at a local dsm shop for $100.