|
Supercharger guys - Carb or Injected?
Just wanted to know how many of you supercharged guys are drawthrough carb, blowthrough carb, or injection. Any comments about how easy it was to set up the carbs or program the ECM?
|
Carb. Do not like ECM!!
|
holley carb. Nickerson set up the carb when he dynoed the motor.
|
MPI is the only way to go! :D
|
Ran carbs for cost reasons mainly. Easier to tune and maintain without special high $$$$ equipment. Set up is mine and just start rich on the mixture and work your way down slowly. In my case I will gladly give up some HP rather than chance running lean. :)
|
I would rather carb. EFI takes more $$ to set up properly, which most people do not.
|
With carbs I have some idea where to look when things go wrong. With injection you need to be able to analyze the ECM, which is getting way over my head.
|
Both, eight injectors in the rails, eight more in the hat...
|
I have done them all. Fuel injection is terrific if you set it up right. But that requires programming the ECU. Delphi units like Mercruiser must be sent to someone who can reprogram them and that is expensive and time consuming. Then, if you change anything, you start over.
Carbs for draw thru are simple, easy to work on and easy and cheap to fix. Just index the power valves!! Carbs blow thru are more difficult to set up initially but work great and are still just carbs. |
I have done both. I never hurt a carb motor... ever. EFI motors, lost two in one year!! Fuel starvation is readily apparent in a carb, but stay hidden in EFI... can lean out one cylinder & frie the piston...been there, done that.
The EFI is more efficient, more costly, instant starts, sooty transom. Nickerson carb..efficient, less expensive, instant starts, no soot!! Carb' with blowers get my vote. |
I run an 825 Race Demon on top of an intercooled Whipplecharger. It idles better than the stock carb did. The motor is a Gen 5 454 Magnum. Sometimes I wish I had fuel injection but then I wouldn't be able to tune it like I can with a carb.
Personally I think a draw thru carb setup is the only way to go. It mixes the air/fuel better than a blow thru setup and you don't have the fuel puddling problem. Another advantage of a draw thru carb setup is that the air is actually chilled slightly by the air/fuel mix. |
carb motors are for sure more forgiving. All they do is take some special care to tune for smooth idle with out fouling. They cost less and will spare you those melted pistons. Otto
|
Fuel injection all the way, although more expensive, with the right person and computer working on an engine, you can have it start up anywhere, anytime, any circumstance. Better yet, if sophisticated enough, you can make it impossible to hurt an engine other than mechanical failure.
Funny thing, EFI can be done really easy in most cases, if people would fly tuners to there location, boats could be done in minutes, instead of sending ECU's back and forth. Most have success with carbs because they can tune them realitively easy and theres many ways to achieve the same goal. EFI requires sophistacted equipment, knowledgeable tuner and knowledgeable computer. Simple fact is that there are very few with this ability in the "high performance" market when compared to carb tuners. EFI can certainly be overwhelming, MEFI 1 compared to MEFI 3 is huge, then MEFI 3 to MEFI 4, then MEFI to Motorola 555, etc. But its the future! Hell, I can be in my office tuning a boat across the nation, do that with a carb :D I gotta admit though, carbs have been around forever and because of this, parts are cheaper, theres far more common knowledge, etc. so it's going to be more common in this area, but EFI is coming fast and taking over. Many diehards don't mind working on them, but theres far more than get in the boat, don't want to touch anything but the throttles and the women in the boat :D The one thing I would like to say is that there are many, far too many misconeptions regarding fuel injection, it drives me crazy hearing some things, but as someone said, EFI ain't rocket science! Dustin |
I have two 850 Holley carbs draw thru for now But
Fuel injection I think will be the way of the future! |
Whipple Charged has a point!! FI is coming whether you want it or not!! FI set up right is practicly bullet proof. There aren't many people who can set up FI correctly but he is one of them.
Soon, we may be able to get FI with a relatively easy to set up format and we can tune easily FI ourselves. You can get several systems now, but you have to use a laptop and buy the ECU and wiring harness to go with it. Big bucks campared to a carb, but the prices are falling! |
EFI vs. Carb
It certainly sounds like most guys like carb over EFI. Does any one know if there is a multiport fuel injection system that is manually controled verses electronic as this seems to be the dislike. Personally I like the idea of MPI for power and eficiency I hate the ECM problems.
|
Re: Supercharger guys - Carb or Injected?
having problems getting a computer re maped for fuel injection 540 with a pro charger any answers the computer is from az marine
|
Re: Supercharger guys - Carb or Injected?
Originally Posted by Whipple Charged
Fuel injection all the way, although more expensive, with the right person and computer working on an engine, you can have it start up anywhere, anytime, any circumstance. Better yet, if sophisticated enough, you can make it impossible to hurt an engine other than mechanical failure.
Funny thing, EFI can be done really easy in most cases, if people would fly tuners to there location, boats could be done in minutes, instead of sending ECU's back and forth. Most have success with carbs because they can tune them realitively easy and theres many ways to achieve the same goal. EFI requires sophistacted equipment, knowledgeable tuner and knowledgeable computer. Simple fact is that there are very few with this ability in the "high performance" market when compared to carb tuners. EFI can certainly be overwhelming, MEFI 1 compared to MEFI 3 is huge, then MEFI 3 to MEFI 4, then MEFI to Motorola 555, etc. But its the future! Hell, I can be in my office tuning a boat across the nation, do that with a carb :D I gotta admit though, carbs have been around forever and because of this, parts are cheaper, theres far more common knowledge, etc. so it's going to be more common in this area, but EFI is coming fast and taking over. Many diehards don't mind working on them, but theres far more than get in the boat, don't want to touch anything but the throttles and the women in the boat :D The one thing I would like to say is that there are many, far too many misconeptions regarding fuel injection, it drives me crazy hearing some things, but as someone said, EFI ain't rocket science! Dustin |
Re: Supercharger guys - Carb or Injected?
Originally Posted by Whipple Charged
Fuel injection all the way, although more expensive, with the right person and computer working on an engine, you can have it start up anywhere, anytime, any circumstance. Better yet, if sophisticated enough, you can make it impossible to hurt an engine other than mechanical failure.
Funny thing, EFI can be done really easy in most cases, if people would fly tuners to there location, boats could be done in minutes, instead of sending ECU's back and forth. Most have success with carbs because they can tune them realitively easy and theres many ways to achieve the same goal. EFI requires sophistacted equipment, knowledgeable tuner and knowledgeable computer. Simple fact is that there are very few with this ability in the "high performance" market when compared to carb tuners. EFI can certainly be overwhelming, MEFI 1 compared to MEFI 3 is huge, then MEFI 3 to MEFI 4, then MEFI to Motorola 555, etc. But its the future! Hell, I can be in my office tuning a boat across the nation, do that with a carb :D I gotta admit though, carbs have been around forever and because of this, parts are cheaper, theres far more common knowledge, etc. so it's going to be more common in this area, but EFI is coming fast and taking over. Many diehards don't mind working on them, but theres far more than get in the boat, don't want to touch anything but the throttles and the women in the boat :D The one thing I would like to say is that there are many, far too many misconeptions regarding fuel injection, it drives me crazy hearing some things, but as someone said, EFI ain't rocket science! Dustin |
Re: Supercharger guys - Carb or Injected?
Blowthrough Nickerson carb. 540 w/ M-4 procharger. Jetted correctly after the 2nd time on the water. On the 3rd season without a change. Have not fouled a plug and is very fuel efficient running on primaries.
|
Re: Supercharger guys - Carb or Injected?
Originally Posted by HiPerf2000
holley carb. Nickerson set up the carb when he dynoed the motor.
|
Re: Supercharger guys - Carb or Injected?
Carbs are ok, But I prefer injection... Jamie / Lakeside :)
|
Re: Supercharger guys - Carb or Injected?
old 2003 thread brought back up :eek:
Why cant Arizonia speed and marine get it right :rolleyes: |
Re: Supercharger guys - Carb or Injected?
Originally Posted by fastestboat
having problems getting a computer re maped for fuel injection 540 with a pro charger any answers the computer is from az marine
What problems are you having? May not be efi program problem. |
Re: Supercharger guys - Carb or Injected?
Originally Posted by fastestboat
having problems getting a computer re maped for fuel injection 540 with a pro charger any answers the computer is from az marine
|
| All times are GMT -5. The time now is 11:07 AM. |
Copyright © 2026 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.