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vafc drawback?

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Old Jan 3, 2008 | 09:05 PM
  #1  
sdr85's Avatar
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From: DFW, Tx
Default vafc drawback?

if i were to buy a vafc2 and set it at say... 4800, would it take away from my top end?
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Old Jan 4, 2008 | 12:27 AM
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98vtec's Avatar
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Default Re: vafc drawback? (sdr85)

is 4800 just a random number? Leave it alone unless you are going to tune it.

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Old Jan 4, 2008 | 06:09 AM
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Default

Just so you know.....vtec doesn't "run out" or anything if you engage earlier. lol

So no, it wouldn't hurt your "top end" power but it would most likely cause a big dip in your midrange powerband.

Like Blake said. Tune it.
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Old Jan 4, 2008 | 07:30 AM
  #4  
NirVTEC's Avatar
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Default Re: (mgags7)

4900-5000 has been MY sweet spot.....a 100 rpm change in the wrong direction has caused HUGE losses into the double digits.....
Dyno or don't bother....
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Old Jan 4, 2008 | 07:41 AM
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Default Re: (::NirVTEC::)

If he's running a stock set up, isnt 4800 on a vfac just going to cause a power loss?
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Old Jan 4, 2008 | 10:20 AM
  #6  
98vtec's Avatar
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Default Re: (Acidcrakker)

maybe, maybe not.
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Old Jan 5, 2008 | 07:56 AM
  #7  
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Default Re: (Acidcrakker)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Acidcrakker &raquo;</TD></TR><TR><TD CLASS="quote">If he's running a stock set up, isnt 4800 on a vfac just going to cause a power loss?</TD></TR></TABLE>

no one will know without a dyno...unless his butt dyno is super accurate.
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Old Jan 5, 2008 | 08:20 AM
  #8  
kinday's Avatar
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Default Re: vafc drawback? (sdr85)

No loss in top end...I also have mine set at a 4900rpm activation point, but as the guys mentioned earlier, you might get a some hesitation if not properly tuned. Try to get some tuning done whenever you decide to give it a try, preferably on a dyno so that you can monitor the changes.
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