Re: Drive By Wire
 

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.

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!

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.

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?

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

Re: Drive By Wire
 

My buddy said he would text you whether or not he should take the stripe. :eek: Any truth to that?

He said not to talk about the starting line incident in Noble. He is still in therapy. :D

Don

Re: Drive By Wire
 

Your buddy is defective, you know that right? :D

Re: Drive By Wire
 

Yes I do! That is why we get along so well. :)

Don

Re: Drive By Wire
 

Does anyone think that Kevin Cour added 900 lbs to his car to slow it down .9 of a second to run Fletcher second round? According to "Live Timing" Cour was on a high 9.60's run @ 138+ Mph when he ran Norton first round. Second round Cour dials 10.57 and runs 10.562. Compare the two runs and '60 ft. is only down .096 on the on 10.562 run. Maybe they took 90 hp. from the engine on tune up, if they did it would not 60 ft. with a .1 of a second from the high 9.60s run. What I think happened the ECM was programmed to open throttle, at let's say 75% at the hit and run at, let's pick a number, 57% the rest of the run. His 60ft was quicker on the 10.562 run than on the 10.531 run in qualifying.

If NHRA would change the rule to "No drive by wire", a lot of the temptation would be removed. Anytime you have a computer controlling the air supply to the engine, the driver is just along for the ride. The fix would be a cable from the accelerator to the throttle shaft on one side and a throttle positioning sensor to tell the computer what it's position is. As opposed to programming the computer and letting it operate the throttle plates to trace a previous run.

Billy, I read the 2009 rulebook and you are right. Either the Fords didn't go by the rules or NHRA turned a blind eye.

For me personally, I want redundancy (a return spring) in closing the throttle. Just in case something goes wrong.

Re: Drive By Wire
 

The 2011 Challenger V10 has removed the DBW throttle, in favor of manual bodies with a cable. Don't know if that was mandated or voluntarily done. I don't know what they are going to do about the 2012 Drag Pak.