Can I just ask what the benefit of switching from fuel injection to carb is?

As far as I can tell there's no point-unless you prefer the character of the engine or something

I'm not attacking anyone by the way-just hoping to further my knowledge

 

Usually it's because a person does not want to pay the money for the tools required to properly tune the fuel injection, such as chip burning equipment and a laptop.

Add to that someone being impatient and wanting the tune-up to be done in one night.

Add to that the hours and hours required to learn how to do it properly or more money to pay someone else to do it...

Some people see it as a hassle, others a challenge with great reward. I am in the reward camp, but am still saving for my tuning equipment.

Except for flat out racing (and even then) I can't see anytime that a carb beats tuned fuel injection, in any camp, power or efficiency. Fuel injection can be tuned either way, or compromised to give both with drawbacks. I think the age of the functionally useful and affordable fuel injection is about to kill the old carburetor for good.

We'll see...

 

Right

From personal experience-the Jeep YJ 4.2
on the minus side-they produced 112bhp/210lb ft, would stall when on a slant and used petrol at an unbelievable rate (offroading you frequently are on a slant)

overall a dog of an engine

then in '91 they gave it fuel injection and shortened the stroke to make the 4.0l H.O. which is a fantastic engine.180bhp/225lb ft, it didn't stall on a slant and used a good deal less petrol

that's my only experience of a direct comparison between fuel injection and carbs though

 

3rd gen F-body EFI systems (TBI or TPI) were not all that "high performance" by today's standards. There's only so far you can go with them before you reach the limits of what they are capable of without extensive work. So people usually go one of two ways after that: either the cheap and easy way (4bbl and aftermarket performance intake) or a more high end fuel injection setup (aftermarket EFI intake like the StealthRam, MiniRam or similar plus plenty of chip tuning). Both ways are equally valid as long as the owner understand the puts and takes of each path.

 

The TBI systems are good for about 650 CFM and up to 375-400 HP when paired with a good dual or single plane intake and fuel pump. Over that, and it starts to become a restriction.

The biggest drawback IMO is that TBI is a wetflow system like a carb, and has all the same issues, such as fuel dynamics. In order to run a CAI and unheated manifold year around, I had to make extensive changes to get the car to drive well like it should, and not hesitate or bog down during transitions. If you dont know what your doing, modded TBI cars can run like puke, which is why they have a bad rep.

 

i chose the carb way because when i bought my iroc the 305 tpi motor was in rough shape and i didnt have the heads so i was lucky to get a nice 350 4 bolt main ,ifi woulda had everything i woulda kept the tuned port injection