If you have done this swap I would love to know whose unit you used and your experiences both good and bad!Thanks

I did this to my RB stroker last winter/spring.I used the Holley Terminator Stealth.with the 4150 style throttle body. Also, the electric fuel pump module that just replaces the existing sending unit built in regulator so no return line required.
Easy to install, started up right away. Runs great best part is cold start/ run-ability. Only issues were self-inflicted just stupid brain dead ones.

The only thing that is kind of a pain is upgrading the firmware on the ecu.

what kind of mods are done to your engine, besides the stroker kit ? [cam, heads, etc.]

My 3 biggest complaints with the EFI upgrades are:
1. Support down the road. I've had more than one customer run into this
2. the 40 or so feet of rubber hose they give you for supply and return lines.
3. I know some are non return line but I have heard of issues with the reliability

And no i am not of fan of th braided crap either. Have had several cars through the shop in which the older line was failing due to ethanol. OK so what's the next thing to cause a failure? I like hard line plumbing with steel or better yet Stainless Steel.

BTW; and Inline electric fuel pump will cure those long crank starts to fill the carb after sitting. the exception to the above is if it is a factory EFI

I did the change almost ten years ago now. My system, although not cheap, works great and zero problems. Support from FAST and F&B throttle bodies has been great along the Rich at Fast Man EFI>

I run the FAST EFI 2.0 Controller and ECU harness. I have the full ability controller, but you cam also get the "learn while you drive system.

I also run F&B throttle bodies 6 Pac system, https://www.fbthrottlebodies.com/6-pack/ - https://www.fbthrottlebodies.com/ but you can get single or double throttle bodies.

Adding EFI to older cars can be a challenge, dual fuel lines (feed and return), electric fuel pump, I run mine outside of the fuel tank without issues, saved on buying a tank or modifying mine. Adding Air Temp, water temp, O2 sensor(s), currently I am running one, but wish I went with duels, fuel pressure regulator, modifying the distributor (thanks Rich at Fast Man) plus about a dozen other little things.

I got a big complement from Westech Performance Group https://westechperformance.com/ with my setup. They said they have seen pro shops who didn't set it up as nice as mine. They tuned my ECU and Dyno'ed the car.

Good luck with your update, it is worth the effort.

If you don't want to switch or have your intake manifold converted to use direct port injectors the Holley Sniper systems work well. I have install several on them on non Mopar motors and they exceeded my and the owners expectations
The last kit was on a 383 C.I. 350 Chevy motor 4150 size going in a 4x4 Chevy truck for cruising, car shows and drive in hamburger nights, no off roading, power brakes air and the full load of accessories on that motor, it made 425 HP at 6000 RPM on the third pull with no manual tuning
Surprised the heck out of me

Just the normal mods that are done ported Edelbocks,10.5:1, hyd roller, 2" TTI's. Nothing fancy.
I just reused the 3/8 steel line. I did upgrade my FBO ign module to get rid of ballast...didn't want to buy the Sniper Hyperspark distributor.

Used an entire Holley Sniper kit on my 512. It's running the electric fans and timing control. Runs great and the self-learn gave it a decent street tune. Car has Eddie heads and a small hydraulic roller cam. Trick Flow single plane intake. Nothing fancy.

As said the master kit comes with an external pump and a couple miles of rubber hose. Don't do this.

• Hard line as far as you can take it. I used NiCopp 3/8" line for the feed and return.
• External pumps can work, but they're a PITA. You WILL need baffles or a Holley Hydromat in the tank to prevent starvation.
• If your car has an EFI ready tank available then this is the easiest route.

anyone do this with an 11.5:1 compression, .590 cam [.250ish @ .050 duration, in at 105 degrees] worked RPM heads, 2"/2 1/8" TTI headers into a 3 1/2" exhaust with x pipe, 446 cube 440 ?
if so, how did it run compared to when it was carbed ?

I'm swapping to EFI on a 493" RB with ported Indy EZ's, close on Duration with a bit more lift. It was 12 to 1, but I swapped the pistons to get it down into pump swill friendly 10.2 to 1. It had a very well sorted set of DC's mechanical secondary carbs and Hughes Engine's latest 6 pack intake porting efforts.

Putting on a Edelbrock Single 4150 Intake that comes with the individual injector bungs in place. Wilson Manifolds did an amazing intermediate porting job on it, along with their 4150 throttle body. The ECU is Holley's universal Terminator kit with coil on plug ignition.

Fuel system has been fully upgraded with return line style, regulator, -8AN methanol- proof braided line, custom stainless tank and Holley Hydromat.

The main reason for trying this is even with a cold intake the motor was sensitive to heat soak and it didn't like to hot start to well. Once it got running again it would cool things down quickly.

Sure that is no problem for someone who knows how to tune EFI. Even the cheapest Holley Sniper will work with a big cam, you just have to manually adjust the tune rather than use the pre-built tune.

I used Holley HP efi. Converted an Edelbrock intake to multi port. Using a composition sensor so it's true flex fuel. AR engineering crank trigger and cam sensor. Also was able to use Coyote ignition coils since it's a Hemi.

Works perfectly

I've converted both of my cars to EFI and I've helped 100+ customers over the past ten years switch to EFI. I always use Holley products. This Duster project was the most complex EFI conversion.

thanks Andy.