New Record in Drag Racing History

[art leong]

Originally Posted by treessavoy

I think some of the grief with your car and the new FI cars is that you need a computer to tune your car while the rest of us are limited to timing lights and physical changes; jets, metering rods, timing changes, etc. How can we compete with a computer that can certainly make changes to your motor while we couldn't even detect the problem?

This theory was beat to death years ago. Then they added fuel injected classes, then they took them away And now do the FI cars dominate?

[art leong]

Originally Posted by Mike Voth

It really shouldn't be too hard to understand the "computer" thing. There's absolutely no way a computer controlled car falls off as much as a non-computer controlled car. Where this becomes pertainant is in qualifying. A computer controlled car makes fuel and timing adjustment on the fly, which would, all things equal, make the car more efficient, and, in return, perform better for the conditions. We can make carb or timing changes according to the weather, but it's only a guess, not knowing how it will actually affect the car. The optimal setting will always be present in a computer controlled car. I wouldn't believe otherwise. But I don't mind the computer cars, in fact, it would be nice to drive one...a lot easier to maintain, I would guess. As long as it was American, and the big wheels were on the rear!

The computer only makes adjustments going down the track if you are in closed loop. I run my car in open loop It will datalog everything that happens, But you can do that with carbs too.
To run in closed loop I worry about the gas effecting the O2 sensor. And really screwing the run up.
I'm not sure how most of the guys with FI do it
PS my tires are taller in the back LOL

[Mike Voth]

Art - That's funny. I guess tire height accounts for something. :-)
I didn't realize your computer was run in open loop. Do many run them that way? That does make a difference in overall performance, doesn't it?

[art leong]

Originally Posted by Mike Voth

Art - That's funny. I guess tire height accounts for something. :-)
I didn't realize your computer was run in open loop. Do many run them that way? That does make a difference in overall performance, doesn't it?

I can run mine in closed loop but then it reads and adjusts off the O2 sensor. And I've been told I would lose consistency that way.
I'm kind of new to the adjustable computer stuff. All my turbo dodges ran factory computers

[mopar68]

Originally Posted by Toyotakid

It kinda makes me sad that there is so much hostility toward the newer technology. (FWD cars). I have been able to come run with you guys this year and have been having a great time. I grew up a muscle car fan and was Mopar all the way but I got an opportunty to drive for Toyota 5 years ago and I have not regretted it. The technology and design behind a 158 c.i. normally aspirated front wheel drive car running 9.60's @ over 140 is pretty darn cool. The thought and innovation of these cars is like the old days of the hot rod cars back in the "golden days". I also have noticed that the average age of the stock and super stock racer is getting up there and if NHRA does not embrace the new generation and the cars they are hot rodding right now there will be no more grass roots in 5-7 years ... Hell, it took me over a year just to get NHRA to let me run with you guys, don't get me sarted on my initial index compared to everyone else ...

Just because something is "newer" doesn't necessarily make it better, cooler-looking/sounding, etc.

M68

[NewHemi]

Hey Art,

Losing consistency is bad enough, but when I first read it, I thought you said the O2 sensor would make you lose "consciousness"!

Now that would be real bad...

David
The New Hemi Guy

[art leong]

Originally Posted by NewHemi

Hey Art,

Losing consistency is bad enough, but when I first read it, I thought you said the O2 sensor would make you lose "consciousness"!

Now that would be real bad...

David
The New Hemi Guy

Only if you beat yourself with it as you go down the track. LOL LOL

[Ed Wright]

Art is correct. The computer DOES NOT make spark adjustments going down the track. It will only make fueling adjustments going down the track if you put it in closed loop, which does not work well. I have yet to see one run as well at WOT or as consistently, in closed loop. They also do not make diagnosing a problem easier, data loggers do. Many carbureted cars now have data loggers.

Is "changing jets" or the timing easier with an EFI car? Sure.