EFI or carbed?

[stock50LX]

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.

 

[gospeedgo]

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.

 

[94gsl5.0]

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

 

[84Gt350]

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

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

Dan

 

[SMOKEDYA]

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

Dan

Hum i'll have to get this issue. All i get now is 5.0, i would never go charged or turbo but most likly the squeze. Altho the chargers and turbos do sound bad a$$. peace



john

 

[Black 93 Fox]

I was thinking the exact same thing Jeff! I know the chip I have helped with issues that my car has mainly idle issues and a few others but it cant be fully tuned till I get around to getting the other things fixed which will be when ever it gets down to the shop. Just because you yanked the chip out doenst mean it didnt change something. You may not be able to feel it but say your air fuel is off and your out racing and its lean kiss your motor good bye. Just because you cant feel it or see it doesnt mean it isnt there. Seems to me that car ran just fine when you got it and was a 12 sec car yes it takes time for a different driver to adjust to the car but why mess with something that already works just fine??

Huh? It made no difference but lost power but ran the same I am confused. Lets talk air fuel. Where is it at with the chip in and out? What changes have been made since the chip was burned? (assuming the chip isnt some Hypercrap off the shelf "tune"). Chances are you are far from where you need to be with the current combo- and putting on a carburator wont solve a bad tune/setup. The chip may not make a difference you can feel, but I bet it cleans up the air fuel (as long as everything else it was burned around stayed the same). Chris had that thing runnin in the 12's if I recall...something isnt right.

 

[SMOKEDYA]

I was thinking the exact same thing Jeff! I know the chip I have helped with issues that my car has mainly idle issues and a few others but it cant be fully tuned till I get around to getting the other things fixed which will be when ever it gets down to the shop. Just because you yanked the chip out doenst mean it didnt change something. You may not be able to feel it but say your air fuel is off and your out racing and its lean kiss your motor good bye. Just because you cant feel it or see it doesnt mean it isnt there. Seems to me that car ran just fine when you got it and was a 12 sec car yes it takes time for a different driver to adjust to the car but why mess with something that already works just fine??

You dont say? But since the chip was burnt i bet it wasent no 12.3 sec car anymore? The 12 sec passes in it was with out the chip when it was puttin down over 300 in HP and TQ and after the chip it went down under 300 in HP but stayed nicely above 300 in TQ for a lil 302 . Thats strange i've made 13 passes now without it and the motor is still running? Hasent blown up yet? And who know's how many passes it had on it before it was installed? So i dont think i'll be kissing it good bye anytime soon peace




john