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Old 02-23-2013, 10:08 AM   #1
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Fly by wire

I have a 2013 GT and noticed the first day I had the car that during a hot start it would lug out sometimes just above idle RPM when I would put the peddle to the floor to rap out the RPM's. I was told by a Ford racing tech it could be the delay of the throttle cable or some **** but that isnt a real plausible explanation for me as it doesnt do it every time and does not do it during a cold start. There is no tune and nothing done except Roush axle back exhaust and it did it before I put the exhaust on. The car has less than 500 miles still and I am running premium fuel...... So I am curious if someone else has had a similar issue and if some people who are knowledgeable with these cars or cars in general can tell me why this is doing this.
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Old 02-23-2013, 10:38 AM   #2
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Can you describe in more detail? What do you mean by lug out?
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Old 02-23-2013, 10:59 AM   #3
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It's called drive by wire and it sounds like that's what you're describing. Totally normal.
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Old 02-23-2013, 12:25 PM   #4
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I understand that It was just a catchy title lol..... Also to add to my thread my car only has 500 miles and have had no other issues what so ever? And Grabber blue yours does the same thing sometimes?
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Old 02-23-2013, 12:26 PM   #5
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Exactly its drive by wire there is no throtle cable i beleive everything is computer controlled
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Old 02-23-2013, 12:29 PM   #6
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Originally Posted by GE3G View Post
Exactly its drive by wire there is no throtle cable i beleive everything is computer controlled
yup it is. I noticed this "slightly" stock rarely every now and again but once tuned never again. Very responsive always.

Not sure if they do that in tuning on purpose or just a part of the process.
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Old 02-23-2013, 12:30 PM   #7
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A better word than lug out would be bog down, and had never done it shifting threw gears or anything.
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Old 02-23-2013, 12:31 PM   #8
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I understand that It was just a catchy title lol..... Also to add to my thread my car only has 500 miles and have had no other issues what so ever? And Grabber blue yours does the same thing sometimes?
My car is tuned which gets rid of the hesitation in the drive by wire system.
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Old 02-23-2013, 12:36 PM   #9
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I was told by a ford racing tech throttle is still controlled by a cable not electronic but I will do more research I'm interested to see what I can find out cause you'd think a ford racing tech should know his *****

---------- Post added at 12:36 PM ---------- Previous post was at 12:36 PM ----------

What tune did u use?
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Old 02-23-2013, 12:41 PM   #10
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I was told by a ford racing tech throttle is still controlled by a cable not electronic but I will do more research I'm interested to see what I can find out cause you'd think a ford racing tech should know his *****

---------- Post added at 12:36 PM ---------- Previous post was at 12:36 PM ----------

What tune did u use?
This tech gave you wrong info. Shameful. When you hit the gas pedal it sends a signal to the computer which in turn sends a signal to the throttle body. I use Justin Starkey @ VMP.
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Old 02-23-2013, 12:45 PM   #11
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This tech gave you wrong info. Shameful. When you hit the gas pedal it sends a signal to the computer which in turn sends a signal to the throttle body. I use Justin Starkey 2 VMP.
100% right
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Old 02-23-2013, 01:06 PM   #12
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The ironic thing is what everyone "feels" in a performance tune is mostly from the changes made to the drive by wire system. Yes there are some other subtle changes made like a bump in timing and some changes made to the cam timing among other things but the biggest feel comes from the DBW system.
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Old 02-23-2013, 02:33 PM   #13
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Originally Posted by Grabber Blue5.0 View Post
This tech gave you wrong info. Shameful. When you hit the gas pedal it sends a signal to the computer which in turn sends a signal to the throttle body. I use Justin Starkey @ VMP.
I mean even looking at the TB you can see this is the case. It runs on an electric motor unlike back in the day like on the 1970 Chevelle SS 454 I had where a wire directly connected would open and close the carburator.
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