Hello everyone. I am just curious, what are the advantages when switching over to a fuel injection setup. From one person I heard, you can gain alot of mileage and horsepowers from it, and others say you only benefit from cold weather driving and throttle response.

What you gusy think?

well let's see... both mix air and fuel, efi does it well, a carb not so well.

EFI is self adjusting, it can properly compensate for both air and engine temp, barometric pressure, altitude, fuel octane, etc.

EFI has a brain. Carbs just, well... suck, literally.

I put a wideband in my Camaro a few weeks ago. My carb is tuned pretty well (not out of the box, seat of the pants followed by chassis dyno with wideband) She starts easy, runs well, and gets over 20 MPG on the highway.

I'm half tempted to disconnect the gauge, it's all over the place.

My EFI conversion is in a box in the garage, scheduled to be installed this winter.

It's been proven that if both setup's suck the same amount that both will be about equal at WOT!!

It's in the midrange where the EFI shine's even tho some guys know how to tweek a carb to get darn close here too!

pdq67

When working correctly, EFI has it all over the carb as said by JimM & pdq.

Flatter, broader torque range, excellent drivabilty.

Carb will make more HP than EFI only at WOT.

What Everett says need's to be taken w/ a grain of salt b/c even tho the EFI is a closer calibrated system, if you run it on the same intake as the carb. and this can be done, the torque should be about equal.

Now if you run it on the long tube intake vs a dual plane carb. intake, the longer individual runners will produce more midrange torque so it isn't an apples to apples comparison to me.

To me this is dry runner vs wet runner theory... TPI thinking here is all..

That said, I figure a 600 cfm TBI should pretty much be equal to a Holley 600cfm carb. if both are mounted on the same dual plane intake!!

pdq67

I'm just about tired of messing with carbs too and although expensive, I am seriously considering going EFI this winter also.

What are some good EFI systems out there in the 650-750cfm range?
What system are you going with Jim?

Mike

I went with a holley 900 cfm 4bbl tbi. It's got a commander 950 controller with the latest firmware & wideband capable, using the sensor from the autometer gauge that is all ready in the car.

Used from a member, I paid less than some carbs cost.