What do you think? worth it or not worth it?

 

depends what kind it is alot of guys love the 5.0 set up most of the aftermarket ones dont work good enough or need a laptop to tune.id go with this one http://www.mass-floefi.com/ or the 5.0 set up

 

Im looking to grab a full efi setup off of a 5.0L. To me it will make it more reliable and run better, because i cant tune carbs and i cant seem to find throttle response from my changes. It alsomakes it easier to SC it when u get a setup with a MAF. for 2000$ you could get a centri SC and it will bolt up easier than a carbed blowthrough setup( IMO) -Jon

 

For those that are new...or have been under a rock lately....

http://www.midnightdsigns.com/Mustang/Engine.htm

 

From a purely financial point of view, it's very difficult to justify something that *might* save you a gallon and a half of gas every hundred miles (distance to break-even for $3000 outlay for a complete aftermarket setup would be somewhere around 65,000 miles).

It's a different story when you think of it in terms of daily driveability and smoothness of operation from a stone-cold start to fully warmed up. No bogs, and it will pull much better if you're caught down around idle rpm in the wrong gear.

At least the aftermarket kits are easier to tune for best overall driveability, not just to maximize wide open throttle power (which is pretty much what main jet changes in a carb do). The flip side is that you do have to have some idea what you're doing so that you don't run it severely lean.

At one point, it would have been different enough to stand out as being different, but I don'tthink that's the case any more. It's not just a Mustang phenomenon - EFI is showing up on early Camaros and late 70's/early 80's GM intermediates, all of which were OE carbureted only.

Having seen that a couple of posts came in while I was still typing, there should be enough experience with forced induction and EFI that most of the bugs should have been worked out by now, at least for relatively "standard" installations. But I'll admit having some preference for the aftermarket ECU's, since they don't start out with theend-user being locked out of the capability to tune the various maps When I was starting to tune my EFI (on a '79 Malibu) the closest Accel EMIC (Engine Management) shop was primarily a Mustang shop, and he had a couple of Fox-bodies in there with the supercharger/EFI combination.

On edit and FWIW - I was building up my EFI engine about 9 years ago


Norm

 

Funny Post ^

There are a few other threads about EFI. Several people have done this to their classic Mustang. I haven't really heard anyone say that they were sorry that they did it. The search function is your friend! https://mustangforums.com/search.asp

Good luck!