- Local time
- 5:13 PM
- Jul 21, 2012
- Reaction score
Sometimes EFI makes more power, sometimes a carb makes more power. Typically if you have an engine that is designed for a carb and you put EFI on it then the power is roughly the same. EFI will make more power if you use a dedicated EFI intake but there aren't many of those around. At this point in time most people are running EFI on a carb intake so the power stays the same. EFI is much easier to tune (if you know what you're doing) so it can be a lot faster to get the engine to max power. Very few hot rodders ever full tune a carb/distributor combo because it is just too much work. But with EFI you can quickly home in on a tune.Not being argumentative, but there may be a power improvement via the interplay of the EFI and timing, making a "best case scenario tune" more likely.
At least that is what I would think.
I dyno tune EFI engines in half a day while carb/distributor engines take a full day or a day and half. If you have to recurve a distributor a couple of times then you're losing money. An EFI timing table can be reprogrammed in seconds while it takes an hour or more to recurve a distributor. Jetting a carb takes a lot longer than changing the target AFR table. If you have to tinker with the emulsion or air bleeds or transfer slots on a carb then you are into it for more than an hour. Even something like accelerator pump tuning can take a long time with a carb. Changing pump cams and nozzles is a chore. With EFI you look at the data log and add or subtract some fuel from the AE curve and you're done.