G37 on the Dyno video
#1
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From: North Hollywood
G37 on the Dyno video
Here's the video.
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<embed src="http://videos.streetfire.net/vidiac.swf" FlashVars="video=0ffc0282-65c9-412a-bf3a-993d015d4a6c" quality="high" bgcolor="#ffffff" width="428" height="352" name="ePlayer" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed>
#2
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From: North Hollywood
One from inside the G37
<embed src="http://videos.streetfire.net/vidiac.swf" FlashVars="video=5fe974be-2ed1-44c5-b5be-993d015dbd80" quality="high" bgcolor="#ffffff" width="428" height="352" name="ePlayer" align="middle" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer"></embed>
#7
Originally Posted by See-Fu
i hope the car doesn't actually sound like that. the exhaust note on the g35 coupe sounded much nicer to me
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#11
Originally Posted by LjN_728
Oh my...
I dont see it kickin in at all. after all, it suppose to increase fuel and hp at high RPM range. that vid cleary shows it reving way past 5k, yet i dont see any differen between that and a kia with no 'vtec'.
#12
Thats cause with traditional VTEC, the engagement point was fixed at a certain RPM and hence you see that sudden jump. Not sure if thats how i-VTEC and the more modern flavours work...
With VVEL, the valve lift is variable throughout the entire RPM band, and hence it appears more seamless.
With VVEL, the valve lift is variable throughout the entire RPM band, and hence it appears more seamless.
Originally Posted by verbal assassin
when i say 'vtec', i mean the so-called variable timing and electronic lift crap you guys were talking about.
I dont see it kickin in at all. after all, it suppose to increase fuel and hp at high RPM range. that vid cleary shows it reving way past 5k, yet i dont see any differen between that and a kia with no 'vtec'.
I dont see it kickin in at all. after all, it suppose to increase fuel and hp at high RPM range. that vid cleary shows it reving way past 5k, yet i dont see any differen between that and a kia with no 'vtec'.
#15
Oh man... -_-;
You can tell when VTEC engages because there is a mechanical difference as the engine switches to a more aggressive cam profile. This is done by the use of multiple camshafts. The more aggressive cam profiles are ideal for higher RPM ranges and typically allow some overlap during the fuel/air strokes.
VVEL operates on the same principle, but from what I've read so far, the fuel/air timing that the camshafts provide are now done in software. Moving away from mechanical camshafts which only provide static cam profiles, computer controlled timing allows the engine to dynamically remap cam profiles in real-time with exact precision to optimize timing at a specific RPM at all times. This is why it gives the new VQ an "infinite" number of cam profiles at it's disposal. Because the VVEL is able to optimize the timing to compensate for changing conditions within the entire RPM range, the engine is better able to provide a wide and flat torque curve along the 2k - 7k range.
Any corrections welcome. Hope this clears up confusion.
You can tell when VTEC engages because there is a mechanical difference as the engine switches to a more aggressive cam profile. This is done by the use of multiple camshafts. The more aggressive cam profiles are ideal for higher RPM ranges and typically allow some overlap during the fuel/air strokes.
VVEL operates on the same principle, but from what I've read so far, the fuel/air timing that the camshafts provide are now done in software. Moving away from mechanical camshafts which only provide static cam profiles, computer controlled timing allows the engine to dynamically remap cam profiles in real-time with exact precision to optimize timing at a specific RPM at all times. This is why it gives the new VQ an "infinite" number of cam profiles at it's disposal. Because the VVEL is able to optimize the timing to compensate for changing conditions within the entire RPM range, the engine is better able to provide a wide and flat torque curve along the 2k - 7k range.
Any corrections welcome. Hope this clears up confusion.