Drive By Wire

Bill Howell · 11-20-2010, 10:45 PM

Does everyone really believe there are no Matty Boxes and Racer's Eye Tree Readers out there? I'm sure they will work with any kind or year of car. To me, tear down for cams, carb, cc's etc. seems crazy when the mechanical things may win an occasional heads up run when the electronic stuff can help win any round. I'm not saying mechanical tear down is not important, it just pales in comparison to the electronic checks.

Jeff Lee · 11-21-2010, 01:57 AM

I don't know....all I know is I can take my Ford Expedition in the driveway and floor in in neutral or park and it will only go to about 2500 RPM and it makes lots of "whup whup" sounds...

hemidup · 11-21-2010, 02:16 AM

Quote:

Originally Posted by Jeff Lee

I don't know....all I know is I can take my Ford Expedition in the driveway and floor in in neutral or park and it will only go to about 2500 RPM and it makes lots of "whup whup" sounds...

You can do it in your drive way, but can you do it at the big end? Maybe with a Furd, but not with my Mopar DBW.

Jeff Lee · 11-21-2010, 03:08 AM

Can't imagine if something is done on one part of a program it can't be made to be done on another part of the program. Oh, dang it! Just fell off the turnip truck again!

Ed Wright · 11-21-2010, 09:37 AM

Jeff, that's a rev limiter. There is one for each gear. Rev limiters for park, neutral and reverse are normally set much lower than forward gears. The computer is cutting the fuel injectors off & on over and over. Makes that wop wop sound.

darkside · 11-21-2010, 10:03 AM

Stupid questin but don't some of the FI cars even have a laptop in them hooked up when they run?

Ed Wright · 11-21-2010, 10:11 AM

Not supposed to. If you have time to screw with a lap top during a pass, you have a really slow car! lol

Bret Kepner · 11-21-2010, 11:59 AM

Quote:

Originally Posted by Bill Howell

I'm not saying mechanical tear down is not important, it just pales in comparison to the electronic checks.

Well said, Bill.

Jeff Teuton · 11-21-2010, 12:21 PM

There is plenty to these new cars. That from a real old car guy. But the total adjustability is what makes them a little hard to duplicate. I could go into the detail about Throttle Position, Timing Change going down the track (did I say MSD Digital), fuel pressure (critical to a EFI, a carb only needs supply) gliches, gloches, etc. Dan Fletcher went back to a carb car. Now for fact not fiction. My ss EFI 360 motor makes 10 more hp and 12 more tqe with a race 850, than a 1000 cfm Throttle Body and Fast EFI system no matter how you adjust them. A comp motor of say 850 hp will probably make 20 more. I was surprised so i confirmed that with several guru's and suppliers around the nation. Seems starting the atomization in the venturi has a better effect than injecting solid fuel at the bottom of the runner. The EFI systems of today evolved from the need for EFI on factory cars because of driveablity and emissions especially in view of the unleaded and weak fuel we run driving around. Total adjustablilty, such as the factory system that adjusts timing and fuel in microseconds makes a car run well. I think we have about 100 sensors that inform the motor what is happening while driving. At wot, most of these sensors are ignored. I'm lost. I quit for now.

Ed Wright · 11-21-2010, 12:22 PM

Larry, you are mistaken about taking power out effecting 60' times. If you use an MSD Digital 7 Programable box you simply back up the timing in the upper gears. That way there is also no effect on your lights, like a lot of weight would. You can do that to older carbureted cars also. No rocket science involved.

11-20-2010, 10:45 PM	#1
Bill Howell Sponsor Join Date: Dec 2001 Location: Aiken, SC Posts: 316 Likes: 28 Liked 218 Times in 61 Posts	Re: Drive By Wire Does everyone really believe there are no Matty Boxes and Racer's Eye Tree Readers out there? I'm sure they will work with any kind or year of car. To me, tear down for cams, carb, cc's etc. seems crazy when the mechanical things may win an occasional heads up run when the electronic stuff can help win any round. I'm not saying mechanical tear down is not important, it just pales in comparison to the electronic checks. __________________ Bill Howell 2059 STK

11-21-2010, 01:57 AM	#2
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Drive By Wire I don't know....all I know is I can take my Ford Expedition in the driveway and floor in in neutral or park and it will only go to about 2500 RPM and it makes lots of "whup whup" sounds... __________________ Jeff Lee 7494 D/S '70 AMX

11-21-2010, 03:08 AM	#4
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Drive By Wire Can't imagine if something is done on one part of a program it can't be made to be done on another part of the program. Oh, dang it! Just fell off the turnip truck again! __________________ Jeff Lee 7494 D/S '70 AMX

11-21-2010, 09:37 AM	#5
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Drive By Wire Jeff, that's a rev limiter. There is one for each gear. Rev limiters for park, neutral and reverse are normally set much lower than forward gears. The computer is cutting the fuel injectors off & on over and over. Makes that wop wop sound. __________________ Ed Wright 4156 SS/JA

11-21-2010, 10:03 AM	#6
darkside Junior Member Join Date: Nov 2006 Posts: 56 Likes: 0 Liked 0 Times in 0 Posts	Re: Drive By Wire Stupid questin but don't some of the FI cars even have a laptop in them hooked up when they run? __________________ Lynn Ellison

11-21-2010, 10:11 AM	#7
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Drive By Wire Not supposed to. If you have time to screw with a lap top during a pass, you have a really slow car! lol __________________ Ed Wright 4156 SS/JA

11-21-2010, 12:21 PM	#9
Jeff Teuton VIP Member Join Date: Jan 2002 Location: Houma, LA Posts: 2,717 Likes: 2 Liked 325 Times in 50 Posts	Re: Drive By Wire There is plenty to these new cars. That from a real old car guy. But the total adjustability is what makes them a little hard to duplicate. I could go into the detail about Throttle Position, Timing Change going down the track (did I say MSD Digital), fuel pressure (critical to a EFI, a carb only needs supply) gliches, gloches, etc. Dan Fletcher went back to a carb car. Now for fact not fiction. My ss EFI 360 motor makes 10 more hp and 12 more tqe with a race 850, than a 1000 cfm Throttle Body and Fast EFI system no matter how you adjust them. A comp motor of say 850 hp will probably make 20 more. I was surprised so i confirmed that with several guru's and suppliers around the nation. Seems starting the atomization in the venturi has a better effect than injecting solid fuel at the bottom of the runner. The EFI systems of today evolved from the need for EFI on factory cars because of driveablity and emissions especially in view of the unleaded and weak fuel we run driving around. Total adjustablilty, such as the factory system that adjusts timing and fuel in microseconds makes a car run well. I think we have about 100 sensors that inform the motor what is happening while driving. At wot, most of these sensors are ignored. I'm lost. I quit for now. __________________ Jeff Teuton 4022 STK

11-21-2010, 12:22 PM	#10
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: Drive By Wire Larry, you are mistaken about taking power out effecting 60' times. If you use an MSD Digital 7 Programable box you simply back up the timing in the upper gears. That way there is also no effect on your lights, like a lot of weight would. You can do that to older carbureted cars also. No rocket science involved. __________________ Ed Wright 4156 SS/JA