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Lowering VTEC

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Old 04-27-2013 | 09:20 PM
  #11  
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Anyone have more info ?....
Old 04-27-2013 | 11:01 PM
  #12  
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On what?
Old 04-28-2013 | 08:15 PM
  #13  
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Flash pro?
Old 04-29-2013 | 08:22 AM
  #14  
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Originally Posted by dustin02rsx
Originally Posted by arsenal' timestamp='1367097142' post='22503943
If this is the case, why did Honda design it to switch at 6K?
Fuel mileage? I'm at 4k cruising at somewhere around 80mph.

It's load sensitive too. Just because your over 4k rpms doesn't mean vtec is engaged. I have my vtec at 3.8k but it doesn't engage until I'm over 45% throttle load, so no matter what RPM I'm at, if Im under 45% throttle, vtec is not engaged.

Honda put it at 6k because that is the point just above where it *should* be with the stock cat in place. With the stock cat it should be around 5.5k, but they raised it to 6k so you feel that vtec bump, which makes it feel faster, which in turn probably sold more cars.
Old 04-29-2013 | 08:40 AM
  #15  
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its a dbw car, you can tell by the seats. Must be on flash pro.
Old 04-30-2013 | 10:47 AM
  #16  
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Would this be bad for the engine / car in the long run?
Old 05-01-2013 | 01:44 AM
  #17  
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Lowering vtec switchover point without dyno test is really not good. In the stock version of s2000 the vtec should not be lowered more than 5500 rpm otherwise you will lose power

When you have modification lowering more is most of the time good but dynotest is a necessity
Old 05-01-2013 | 11:22 AM
  #18  
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Originally Posted by liquid_helix136
Originally Posted by dustin02rsx' timestamp='1367110060' post='22504167
[quote name='arsenal' timestamp='1367097142' post='22503943']
If this is the case, why did Honda design it to switch at 6K?
Fuel mileage? I'm at 4k cruising at somewhere around 80mph.

It's load sensitive too. Just because your over 4k rpms doesn't mean vtec is engaged. I have my vtec at 3.8k but it doesn't engage until I'm over 45% throttle load, so no matter what RPM I'm at, if Im under 45% throttle, vtec is not engaged.

Honda put it at 6k because that is the point just above where it *should* be with the stock cat in place. With the stock cat it should be around 5.5k, but they raised it to 6k so you feel that vtec bump, which makes it feel faster, which in turn probably sold more cars.
[/quote]
So they ended up lowering its performance for the vtec bump feel?
Old 05-01-2013 | 12:34 PM
  #19  
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Originally Posted by Sinub
So they ended up lowering its performance for the vtec bump feel?
Yeah, marketing sometimes always interferes with things. Honda is perfectly capable of smooth vtec transitions, but every vtec car up to the s2000 had the big "vtec kicked in yo" jump.
Old 05-01-2013 | 03:40 PM
  #20  
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You get the same with a lot of turbo cars, especially diesels, it's deliberate because it makes the car feel faster than it is. Car's with smooth, linear torque curves (a la RX8), often feel 'flat' to anyone but an experienced racer/tester


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