Dyno Results
Lexus Tech y0!!
Joined: Jan 2004
Posts: 8,321
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From: CT
Originally Posted by b16aEGcivic
no, they just determine if it is allowed to engage....it will always engage at the same rpm....unless you get into I-vtec..but yada yada yada
Registered User
Joined: Feb 2004
Posts: 38
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From: Chesterfield, MO
On my D16Y8, with the resonator removed, you can hear a distinct change in the tone of the intake at about 4800 rpm, but with the resonator in place, you can't really tell a difference. Also, I don't know if any of you have tried this, but if you unplug that vtec solenoid thing and dyno it, you'll see that the dyno graph looks virtually identical until just before 5k; now the torque peak occurs at 4700, and it just drops off after that (be warned, your CEL will come on if you do this though). 
Joined: Jul 2003
Posts: 28,282
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From: michigan
Originally Posted by JoePannone
so whats up with i-vtec? i heard that you have to engage it in first gear in order for it to engage in every other gear. did i hear wrong?
Member
Joined: Aug 2002
Posts: 84
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From: springfield, MA
Originally Posted by b16aEGcivic
I was under the impression that the d16z6 kicked in at 4800...:dunno: I could be wrong
No, ur right - my old POS d16z6 always hit at 4800. BTW, the reason you are having trouble hearing it engauge is because you are using a Cold Air intake instead of a Hot air intake - Hot air intakes are the ones where you can REALLY hear VTEC hit.
