EFI or carbed?

I agree with much that has been said about switching, especially Lamrith. I just made the switch from EFI to carb and I am not yet running as well as I was. However, I have no regrets as I am confident I'll get there. Here is the best generalization I can make: The closer your car is to a race car, the better off you'll be with a carburator. Due to the long-runner intakes, I am convinced that you can make more torque with the same long block using an EFI setup, but you will be rpm limited. When that limitation becomes a impedement to performance, it's time to switch. If your car is a daily driver that you race, stay with EFI.

In my case, the car is a toy that I race. I can change the combo far more easily with a carb. Having said that, I also agree with "GoSpeed.." Don't switch to solve a problem as you are going to encounter new problems when you switch. I did. The switch is a time consuming and expensive process.

My point was simple but I guess I just never stated it correctly. Instead of spending money on converting it, I would make sure you are optimized with what you have first. If your trying to use a carb to fix a problem, consider fixing the problem the cheap way first working with what you have. Comparing dyno numbers is only valid if everything (ambient temp, car temp, dyno calibration, etc) is exactly the same. Rays new motor makes 50 less HP and 50 less Ft/LB's of torque and went faster than it ever has on the small shot. Comparing wideband numbers is the same wherever you go as long as the wideband is fresh. Although you may not feel a difference, the chip SHOULD make a difference in how the engine runs when you are analyzing the A/F. Thats if the person burning the chip was actually tuning something. Maybe he was just trying to cure an idle issue or take out the rev limiter. Find out more about the chip before you ditch it. The off the shelf chips like Hypercrap just bump timing, nothing you cant do manually for a whole lot less money.

So, sorry to get "off topic" but I thought I was staying on topic- stick with the injection! Just make sure its right.

I'm surprised no one brought up that if you ever go charged (Turbo or Super).... EFI is MUCH more easier to tune. Especially with the affordable managment setups and widebands out there

94gsl5.0 said:

I'm surprised no one brought up that if you ever go charged (Turbo or Super).... EFI is MUCH more easier to tune. Especially with the affordable managment setups and widebands out there

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Latest issue of MM&FF covers EFI to carb and this topic.

Dan