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Old 03-01-2014, 10:14 PM   #1
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V6 acting really strange!

I recently got performance parts for my 2013 v6 mustang. I ordered a Airaid intake, a BBK 73mm throttle body, 3.73 gears, and a diablo sport in-tuner. I went with a 91performance tune and as soon as tuned my car, it goes crazy. My speedometer will completely not work. I could be going 60mph and my speedometer would read 0mph. It doesn't work at all! The car will also take off on its own without me pushing the accelerator. My car has a manual transmission and as soon as I put it into first gear, the car accelerates all on its own. So then I went back with the stock tune and notice my speedometer was working properly but the car would still take off on its own. But it wasn't as much as it was when it was tuned to 91P. I'll put the car in 1st gear and the car will gradually/slowly pick up speed. Also, when my car is set at a stock tune and I'm in neutral, letting the car idle, my rpm meter will fluctuate under 1000rpm. It moves up and down until finally it sets itself under 1000rpm. What can this be? Can it be the tuner making my car take off on its own or is it the throttle body? Maybe the throttle body is not compatible with the diablo in tuner? Maybe the throttle body gone bad? Your help would be much appreciate it. ThankYOU!
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Old 03-01-2014, 10:34 PM   #2
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Sorry about the questions but I'm just trying to get some information. When you put the car and first, what so you mean it takes off on its own? Referring to how fast are u releasing the clutch? When the rpms are fluctuating at idle is the car completely warmed up? The speedo thing is definitely a problem and hopefully that was just a glitch that won't happen again, if I were you id ask them to send you an updated tune.
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Old 03-01-2014, 10:46 PM   #3
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No thankyou for responding. When the car is tuned to 91P, I put it on first, give it a bit of gas and then it takes off all on its own like if someone was punching the gas pedal. When the car is in stock tune, I put it on first, give it a bit of gas and really slowly, it begins to pick up speed. Sometimes it feels normal and sometimes it feels not normal. The idling issue, it does it when the car is completely warmed up.
I already stalked to bama, they sent me new tunes and still I'm having this retarded issue.
The taking off by itself situation wouldn't have to deal with the 3.73 I put in?
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Old 03-01-2014, 10:47 PM   #4
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The clutch, I tend to let it go kinda quickly.
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Old 03-01-2014, 10:48 PM   #5
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V6 acting really strange!

So the issue that your having is when you let off the clutch from a dead stop in first gear it starts to go a little even without gas?
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Old 03-01-2014, 10:51 PM   #6
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Yes exactly that. When the 91P is on, it's more aggressive at accelerating but when I'm at a stock tune, it slowly picks up speed by itself.
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Old 03-01-2014, 10:53 PM   #7
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That's is normal, the 3.73 gears make it feel more aggressive on top of the tune. The gears are basically moving your power band lower. Before you did the gear change you could do the same thing if you lift off the clutch slowly enough but it just wasn't as aggressive
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Old 03-01-2014, 11:00 PM   #8
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Call your tuner asap, and refrain from driving the car if you cannot completely control it.

Your tuner should be able to get you squared away fast.
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Old 03-01-2014, 11:16 PM   #9
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Are u saying its normal how the car reacts when the car is at a 91P or when it's set at a stock tune?

---------- Post added at 05:15 AM ---------- Previous post was at 05:14 AM ----------

Cise I called them already and they dnt have an answer for me.
Do u have a tuner?

---------- Post added at 05:16 AM ---------- Previous post was at 05:15 AM ----------

When it's at a stock tune, car works fine except the idling issue. But when it's at a 91P, it's freaking crazy!
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Old 03-01-2014, 11:17 PM   #10
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Here let me give u an example. when my 2014 gt with 3:31 gear was bone stock, if i let off the clutch slowly enough it would start moving on its own even if i didn't give it gas. Essentially this is what your problem is right? your car is moving when your not giving it gas?

As for the idling issue, was the car completely warmed up when the rpms were fluctuating?
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Old 03-01-2014, 11:24 PM   #11
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No I get where u coming from. It does that when my car is at a stock tune so I'm assuming that's a normal thing. But how do u explain the taking off by itself situation when it's tune to a 91 performance?
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Old 03-01-2014, 11:25 PM   #12
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it fluctuates when it's cold and completely warm.
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