sudden acceleration at 3k - MustangForums.com



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Old 08-19-2008, 07:03 AM   #1
batmobile2005
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Default sudden acceleration at 3k

i think i remember seeing this somewhere and i dont think that its a problem, but when im launching and it hits 3 grand, it really kicks. i think it was said that it was somethign cam related, but im just double checking that its not a problem. thanks
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Old 08-19-2008, 07:07 AM   #2
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I'd guess it's when something changes w/ the variable cam timing and/or the charge motion plates. It's normal.
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Old 08-19-2008, 07:13 AM   #3
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3 grand is when v-tec kicks in! jk, sorry just had to say that! many people have said that their car really comes alive around 3 thou, definately the sweet spot in my opinion!
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Old 08-19-2008, 07:31 AM   #4
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Sounds like there may be a problem with your tune. Call Brenspeed and talk to them about it.
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Old 08-19-2008, 08:52 AM   #5
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I notice a boost in power 3K+ RPM when going WOT. I think this is normal pretty much. Most engines don't make all that much power down low.
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Old 08-19-2008, 08:59 AM   #6
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That is completely normal - the engine is switching to a more aggressive cam profile.
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Old 08-19-2008, 09:19 AM   #7
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I've noticed this also on occasion.
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Old 08-19-2008, 10:09 AM   #8
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I too have noticed this, a sudden burst in acceleration @ 3k and also I've noticed a nice bump at around 5k.
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Old 08-19-2008, 11:51 AM   #9
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Quote:
Originally Posted by robsirish View Post
3 grand is when v-tec kicks in! jk, sorry just had to say that! many people have said that their car really comes alive around 3 thou, definately the sweet spot in my opinion!
hahahah V-Tec...ah your killin' me goose.

I love how much that shiz means to ricers.
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Old 08-19-2008, 12:05 PM   #10
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I noticed that the difference before 3k and after 3k is more pronounced with the brenspeed tune. 3k-6k is very steady for me though.. nice strong pull all the way through. I do get some wierd sounds in my midpipes if I throttle hard at about 1700 rpm with the tune though.. goes away within a couple hundred rpms, and I figured it was just the advanced timing at the lower rpm causing it.. not a backfire but as if fuel is still burning in the exhaust manifold..
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2005, 2006, acceleration, accleration, bursts, exceleration, ford, gt, mustang, mustangs, problem, problems, sudden, v6, x3

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