2002WRXSTi said:
Buy the looks of it I am older than most of the people here. Especially if they do not remember what a Carb is capable of.
Apparently back in your day, they didn't teach people how to spell or put together a good argument either.
FI is very narrow on what it can do but it makes things emission friendly and much more daily drivable.
Alright Mr. Wizard. Back that statement up. What is 'narrow' about fuel injection. What,
precisely can a carb do that fuel injection cannot?
If I spit out names then I am no longer going to be allowed in the shop discussions period. The shop attitude is not very friendly towards anything rice.
So pretty much, you're full of sh!t.
The son was DFI certified years ago
DFI certified eh? Who certified him? What platform? Please, do tell.
almost against his fathers opinion as his father has made the most HP out of a SSGTA BBC. 850HP out of a stock 454 with factory compression with a CARB!
Oh my god! 850 horesepower out of a nartually aspirated BIG BLOCK! My heart be still!
FI could possibly make a few more HP and attempt to make it drivable but the class does not allow this.
Did it ever occur to you that perhaps the reason this guy prefers carbs is because he doesn't have much experience with stand-alone fuel injection?
That and the valve train cannot live on the streets.
Please tell me the difference between carbureted valvetrains and fuel injected ones. I can't wait to hear this one.
As I said a SB2 headed SBC was built and broken in with a carb then switched to DFI and came out only 4hp more @644 instead of 640hp. That is naturally aspirated HP too.
So based on this alone, you are prepared to say that fuel inection is inferior to carburetion, right?
Watching it with the carb it started and ran fine. Made the pulls did everything hands off except for setting timing. When the FI was added it is still using a mechanical pushrod style pump with no return line. That was a very interesting thing to me as when is the last time you saw a HiPo FI system with no return line?!
What's your point?
They sat tuning for a few days to try to get everything running as good as the carb does. I left by that time as it was getting boring and it was to hot in there. The main reason he wanted the FI is #1 looks #2 it would be doing a lot of low idle cruising and idling witch would make the FI the No1 pick. However the amount of money in the system plus all the tuning problems as it is not even in the vehicle yet was offset by the fact that it is a rite off cause it is advertising for his company.
So basically, this guy couldn't tune fuel injection to save his life then, right? My tune was 90% complete within one hour of leaving the house, without a dyno.
I wont even get into how a Carb does not need to know anything.
Because you have no idea what the fvck you're talking about.
They have MSD ignitions now that are programmable along with boost controllers and such.
You mean, like my AEM does right out of the box?
It's only thing to do is meter air and it does it better than FI ever will be able to.
Yes, you've mentioned this. But
HOW?? Tell me how. Don't make some dipsh!t blanket statement and not back it up. Enlighten all of us.
FI's advantage is the injectors can be placed rite at the port so there will be no puddling or fuel drop out at low RPM and also can be forced to run lean for emissions reasons easily.
You
do know, of course, that making a motor run lean will cause NOX to increase and make you fail emissions, right? ...and that running stoichiometric is ideal for emissions, right? Of course you did, you're the expert here.
TPI and EFI systems were better than it ever could be but none can meter air at speed like a Carb can.
This is now the third time you've mentioned this in this post alone, but you've never once backed up this claim in any way.
No mater what AEM or Motec system is out there they all use tables to make adjustments and know what timing and fuel should be doing.
A carburetor cannot make anywhere near the adjustments that a stand-alone can.
Can your precious carburetor:
Detect knock and back off timing?
Detect a too rich/lean condition in the exhaust gases and compensate?
Detect a change in engine temperature and make adjustments to timing?
Detect a change in air inlet mass and make adjustments?
Fire the first time in any weather, in any temperature?
...and the list goes on and on and on....
Even stock FI systems have to have tables to run from, they cannot just measure the amount of air being ingested
You mean with a Mass Airflow Sensor for example?
and know what to do unless they have a table to compare it to and make calculations from.
It's a good thing then that all major car manufacturers spend millions of dollars testing those tables to maximize power, fuel economy, and minimize emissions. Just incredible. What will they think of next?
A carburetor can however because the air runs through a venturi so it never has to compare to a map.
This is one of the most po-dunk, ignorant statements I've ever read on any car forum, anywhere. All hail the mighty all-knowing venturi.
It mechanically does it no matter how small the difference is, not by load cells.
HOW?? HOW HOW HOW HOW HOW HOW HOW? Please tell.
Newsflash: Electronic fuel injection makes thousands of adjustments, constantly, to adjust air and fuel to optimize against existing engine parameters. Carbs don't. It's almost as if you're suggesting that cars operate constantly in closed loop. You are really stupid.
Like I said I have FI in my cars(not AEM) and am not going to switch to a Carb but the FI does not change physics.
Apparently your carburetor defies all laws of common sense.
If you program your FI to pull timing back because you have a hi CR then you are and will lose HP.
..but a carb can magically run high compression with no additional fuel octane requirements or decreased timing? Damn, I better get me one of these.
Same with a Carb it is just easier to do most things with FI cause you can sit and change it from one point.
EFI > Carb
all it's sensors it does not allow it to change what is physically possible period.
But a carb can?
PS Dr. Nascar Carb Pro Stock Carb the FI systems are just catching up and they don't even have to be streetable
Do you speaka de engrish?
Keep digging your hole moron.
Paul.
