I currently have a SBC 383, Solid Roller / Victor Jr Intake / Holley HP Mechanical pump 170 gph / MSD Disb / 6AL / Timing retard box / AED 750 / Solid Roller / Edelbrock Plate Nitrous Systems (200 shot) / msd window switch / Car has NA 400 rwhp, and about 600 rwhp on nitrous / Turbo 350 w/3500 stall.

I'm really looking to convert it over to EFI (and then in the future add either turbo or a procharger). With that said I don't want the bolt on EFI Carb that has the 4 injectors. I would like to have a intake that has 8 injectors in each runner.

The only 2 systems I know of that will accomplish this is the Holley HP or the Fast XFI. The Fast XFI comes with everything from fuel pump, fuel regulator, Distributor, to intake... I don't think the Holley HP has everything, but I believe is much cheaper. The Fast XFI I can get for about $3700 (ugh) for the 500-1000 hp system.

I'm not experienced enough in this EFI, but think I will have easier/smoother running set-up that can be adjusted easily even as I upgrade to more performance mods.

I just don't know if I should purchase this FAST XFI complete system if there is a better or maybe I should say cheaper alternative out there that can accomplish this.

Any suggestions would be great or any other info needed.

The car is mostly used to speed up the road, and hit the 1/4 at the track for fun.

How about Accel DFI Pro-Ram? It's about $2600 on Amazon. Full kit with fuel system and it has a NOS and timing controller, or you can use the dual sync or other IPU distributor if you want to run sequential.
http://www.summitracing.com/parts/ACC-77144/

Instructions are here (it's the Gen 7)
http://accel-ignition.com/ACCELDFI/ACCELDFIPublicDownloads/DFIInstructions.aspx
http://www.accel-ignition.com/portals/0/downloads/dfi/pdf/ACCEL-DFI_Instructions_gen_7.pdf

That system looks like it might be a option. Have you or anyone else used it?

Sorry, I don't. I do know in the "How to Build Big Inch Chevy Small Blocks" book the DFI intake was the best out of the box single plane they tested. Also one of the recent Engine Masters winners ran the Gen VII controller on a custom setup. There's a good bit of forum fodder out there if you google "accel dfi" or "accel gen 7".

I didn't know Fast had a complete system. I just looked it up. You're going to be $3500 to $4K for a good intake, rails, injectors, throttle body, distributor, fuel pump, regulator, and ECU to run everything. I always pieced them together. Bought the intake/rails/throttle body I liked, and then used whatever computer to run it that I wanted. The systems like Fast, Accel, Holley can be used on many different combos, just make sure you get the box for the specific engine and ignition setup you're going to run.

Any of the above three would be a good choice for your combo, they all can handle your HP and nitrous needs. If you're not going to be doing the tuning yourself you may want to pick a local tuner and get his recommendation, since he'll be the one tuning it. Many are comfortable with certain systems.

I didn't know Fast had a complete system. I just looked it up. You're going to be $3500 to $4K for a good intake, rails, injectors, throttle body, distributor, fuel pump, regulator, and ECU to run everything. I always pieced them together. Bought the intake/rails/throttle body I liked, and then used whatever computer to run it that I wanted. The systems like Fast, Accel, Holley can be used on many different combos, just make sure you get the box for the specific engine and ignition setup you're going to run.

Any of the above three would be a good choice for your combo, they all can handle your HP and nitrous needs. If you're not going to be doing the tuning yourself you may want to pick a local tuner and get his recommendation, since he'll be the one tuning it. Many are comfortable with certain systems.

This is why I wanted to put this out there. See from the ones who have used them or different ones, and to see if there might be a better solution, but so far looks like the FAST XFI, might be the ticket...Just expensive, and hopefully worth it..

This is why I wanted to put this out there. See from the ones who have used them or different ones, and to see if there might be a better solution, but so far looks like the FAST XFI, might be the ticket...Just expensive, and hopefully worth it..

I've used Fast, Accel, BigStuff 3, and a host of factory ECU's and they're all very capable. One may have more bells and whistles, but they'll all run your combo. And if you buy comparative systems they'll all be in that price range for the good stuff. I would not shortcut a nitrous engine.

I didn't know Fast had a complete system. I just looked it up. You're going to be $3500 to $4K for a good intake, rails, injectors, throttle body, distributor, fuel pump, regulator, and ECU to run everything. I always pieced them together. Bought the intake/rails/throttle body I liked, and then used whatever computer to run it that I wanted. The systems like Fast, Accel, Holley can be used on many different combos, just make sure you get the box for the specific engine and ignition setup you're going to run.

Any of the above three would be a good choice for your combo, they all can handle your HP and nitrous needs. If you're not going to be doing the tuning yourself you may want to pick a local tuner and get his recommendation, since he'll be the one tuning it. Many are comfortable with certain systems.

This last part is very important. I couldn't find anyone in SoCal who could tune the older version of the Holley system I had. I got it running strong, but really wanted to work on fuel economy.

This last part is very important. I couldn't find anyone in SoCal who could tune the older version of the Holley system I had. I got it running strong, but really wanted to work on fuel economy.

absolutely Mike. You don't want to have a tuner learning a new-to-him EFI system on your car. Although the different systems all accomplish the same thing when properly tuned, the terminology, mapping (especially transient tables), etc. can vary a ton, and even though he may be a good tuner he will struggle figuring out what does what.

Much better off going with a trusted tuner and EFI that he tunes on a daily basis.

absolutely Mike. You don't want to have a tuner learning a new-to-him EFI system on your car. Although the different systems all accomplish the same thing when properly tuned, the terminology, mapping (especially transient tables), etc. can vary a ton, and even though he may be a good tuner he will struggle figuring out what does what.

Much better off going with a trusted tuner and EFI that he tunes on a daily basis.

I did'nt think about calling some of the tuners around here. I will call some and see what they have to say.

Got my parts & support from here http://www.efisupply.com/index.htm

Got my parts & support from here http://www.efisupply.com/index.htm


I have also been researching this site as well. Just really need to decide which way to go. Heck with this price maybe I should sell my engine, and just buy a built LS engine with harness.

My suggestion is to also call the tech lines of all the EFI manufactures and see if they even answer, and if they seem knowledgeable.

I think the new wave of self-tuning systems have really made the whole EFI thing much easier to get into. I knew nothing about EFI (still dont) but the new Holley EFI system I run has been remarkable and painless.

I went to the track with the factory Holley tune. I fattened/leaned it a bit, moved the timing around, and the car ran the fastest with Holley's base tune!!!!

Another option would be to use a megasquirt system like i did. It is much more economical but you still have the investment of the basic hardware (intake,injectors ect).
Many people have used this system and there is a lot of support and information out there.

My camaro started out with a megesquirt II controller and tpi intake before i switched to a edelbrock pro flo-ex intake manifold and fuel rail from summit and a stock tpi distributer.
You can tune your own system like i did but a wide band o2 sensor is a must for tuning.

here are a few links.
http://www.diyautotune.com/tech_articles/how_to_megasquirt_your_chevy_smallblock_v8_v6.htm
http://www.megamanual.com/mtabcon.htm
http://www.msefi.com/index.php

You can save some money by doing some reading and research.

mike