Posts: 144







I would like to hear from anyone that has used, or is using, an EFI system on a stock 440 B body. I am taking a cross country trip in my superbird and would like to see if this 2 - 3 thousand dollar complete kit is worth the change. Holley, EZ, Edelbrock, and others have kits. Please just let me know if they work. CARB GUYS... No offense but I don't want to hear about your carb tuning skills.....My carb works fine but would like to see the benefits of modern tech.... Please respond if you have changed from carb to EFI throttle body. this is also posted on Dodge Charger . com see who answers correctly first. ha ha THANKS GUYS.

FiTech is pretty darn affordable. I know a couple of autocrosser's who run with it.

If it's a stock/stock cam 440, any efi system will have no problem. Tuning issues only start getting more difficult with high duration, large overlap cams.

While I have an efi system for my car, for a cross country trip, you're not going to see a whole lot of gains out of it. The best gains with the EFI is cold start/warm-up and city driving. For real gains you should be looking at port EFI systems, not throttle body. Steady speed driving, with engine up to temp on the open road, I wouldn't expect to see any measurable MPG improvement over a well tuned carb for this application.

Forget the big name EFI systems. Go FiTech. You can find them at http://fitechefi.com/

You can get a plug and play 400 hp system for $795. Their most popular system is $995 and supports 600 hp.

If you need a fuel system, you can grab their Fuel Command for $395. That's an excellent solution for fuel. You simply take the fuel line off your carb and run it into the Fuel Command. The high pressure line runs from the Fuel Command to the throttle body. No return line is needed.
They include a touch screen control pad and an O2 sensor with a clamp on mount and gasket.

Clean, tidy, effective, and pretty cheap.

While digging through many forums and doing tons of online research, it seems to be the most trouble-free system available. It is also very effective.

We are installing one on a friend's Dart and I will likely be installing one on the Imperial.






If you find a Summit discount code you can save some money and there's a $100 rebate form floating around too.

I don't see this 400HP system on the website ?

Maybe for a throttle body, but for MPFI it's a huge difference.

Check out Summit Racing. They 400 horsepower version is selling for $720.00 after rebate.

http://www.summitracing.com/parts/fif-30003/overview/


The 600 horsepower units have $100 rebate on them, so $895.00
http://www.summitracing.com/parts/fif-30001/overview/

You can expect to see a difference over a well tuned carb. Maybe not right now. It will likely be when atmospheric conditions change and the carb needs to be retuned for perfection. It will certainly happen if you go through big elevation changes.

If you keep your car close to home you might not notice a big difference but the subtle stuff alone is worth it.

He's looking at a throttle body system, not a MPFI system. Carbs perform their best at steady state operation, like on the highway with the engine up to temp. How much extra mpg on the highway would he get with the throttle body EFI versus a properly tuned carb? I can't see more than 3mpg difference in that situation. A difference of 3mpg would at best save you 50 gallons of fuel on a 5000 mile road trip. Spend $1000 or more to save $100-200 in fuel? I'm a big proponent of aftermarket EFI systems, and in the right application I think they're great. For a car you're building as a daily driver where you have lots of cold starts and warm-ups, they're great (well port injection systems are, TBI is still mediocre).

Throttle body systems suffer many of the same problems as carbs. poor fuel distribution, fuel puddling in intake, etc. All the problem with wet flow. If you cant get a port injection system I'd skip it....

TBI injection systems still have the same fuel distribution problems with poorly designed intakes.

That being said, they will outperform carbs on cold and hot starts, elevation change, and any time the temperature changes.

A fine example is the road trip I have planned for this summer. It will have me crossing the mountains twice and dropping below sea level. A TBI system will handle that better than a carb.

Are they as good as port systems?

Not quite.

Is that a reason to avoid them?

No.

There are plenty of benefits to the TBI systems and the largest percentile of owners would never see the benefit of added cost and complexity of port injection systems.

I've played with port injection and have a good mind to sell my EFI intake on Ebay. It would help pay for the Imperial's future throttle body injection.

I went port EFI on a 505" stroked 440.
Originally the biggest issue was the fuel supply.
The remote sump as shown earlier in this thread is a decent solution if you have the under hood space.
For my '69 Coronet, I currently have the Spectra Performance CR9CFI Fuel tank that comes with a Walbro GSS342, 255 lph internal pump. Bought it from Amazon ($366.02.) Just check the terminals on the inside of the sending unit to make sure they are not shorted. This seems to be an assembly issue as I am not the only one who had this problem.

One of the nice functions of the EFI is full control of the ignition timing. This is where you might find increased fuel mileage, and better idle quality. At idle/no load you can advance the ignition for a nice idle, then under load it backs down to prevent pinging. At speed, it will also advance/retard the timing based on load and RPM to what ever you program.

Use a system that uses a wide-band O2 sensor. These are usually self tuning too.

Other functions you should look for is A/C clutch input so the computer know to compensate the idle for when the A/C kicks on, and if you plan to use electric fans for cooling, an output for the fan control so the EFI computer can switch the fans on/off.

I emailed the company and it's not ready to go out to the public yet. ... Summit has it listed with a 4/29 ship date...

The biggest plus is the problems many run into with the crap gas that boils in the carb, eliminating that headache alone makes the change to a unit like this worth looking into .

That FiTech looks pretty nice, has the Ignition control, A/C control, Fan control, Nitrous, and the self tuning Wideband O2.

I think the OP has to ask himself if he thinks the benefits outweigh the additional cost and complexity of the EFI system. The altitude and temperature correction of the TBI is nice, but that's not going to be any kind of return on investment for the application it sounds like this car is going to be used in.

Another thing to consider is that most modern EFI systems, even TBI, can control timing also.

For 7-800 thats not bad for the benefits. It wont pay off dollar wise on one trip, but it will continue to pay dividends so unless you want a full bogey port setup, i say go for it.

The solution to 'percolation' is a helluva lot less costly than 3k for EFI...


A properly dialed-in fuel system is gonna make a 'Bird with a Carter make it cross-country no problem...


These cars in OEM config have withstood the test of time...

And on the road, if there's 'issues', I'd much rather have to deal with the factory fuel delivery system...


'Modern' EFI in a 'vintage' ride has zero appeal to me...

I want to hear, feel, and smell the 'vintage' experience...


And know it's the result of my tuning, not an onbored computer...


Been doing it for many years...

No issues...

Just my 2C but when you start driving through the mountains you'll love the fuel injection over a carb which will go super rich very fast, whereas FI will compensate. You don't want to be chuggin up the Rockies spewing smoke all over the place from a rich carb. The FITech looks like a great alternative and you can easily convert back when you get home.