Which is best vtec controller
Wannabe yuppie
Joined: Dec 2000
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From: Madison, WI
So anyway back to the original topic since this has spiraled out of control, the best VTEC controller is the A'PEXi V-AFC. However I must point out that with simple bolt-on mods you will not gain any power from having a VTEC controller and its primary function will to sit on the dash and look cool and you can tell people that don't know anything about cars that it's your VTEC controller.
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Joined: Mar 2002
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From: Cincinnati
Originally posted by qtiger
You could fiddle with it a bit on the dyno, but what you're seeing could be a hole in your tune as well. Are you using the nitrous maps for your VTEC fuel and ignition or is it all on the main map?
You could fiddle with it a bit on the dyno, but what you're seeing could be a hole in your tune as well. Are you using the nitrous maps for your VTEC fuel and ignition or is it all on the main map?
So OG it hurts.
Joined: Mar 1999
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From: VA
so basically vtec is a mini turbo, correct/
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Originally posted by kfar09
i dont have the EMS hooked up yet, im waiting for the wideband to be shipped out by AEM and then im gonna install it all at once and tune it on a dyno. i dynoed my car with i/h/e and the dip is just how things are set at stock. the guy that is going to tune my car is certified with the AEM EMS so i know he will tune it perfect. i was just wondering if that is where my vtec engagement should be at out of my own curiosity
i dont have the EMS hooked up yet, im waiting for the wideband to be shipped out by AEM and then im gonna install it all at once and tune it on a dyno. i dynoed my car with i/h/e and the dip is just how things are set at stock. the guy that is going to tune my car is certified with the AEM EMS so i know he will tune it perfect. i was just wondering if that is where my vtec engagement should be at out of my own curiosity
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From: Dallas
Originally posted by MrFatbooty
VTEC is actually very simple in its concept. Instead of one cam profile you have two, and you can switch between them. Any cam profile has a range of rpms where it is at peak efficiency. The ideal point for the VTEC switch is determined by the point at which the primary cam profile will make the same amount of power as the secondary cam profile. At this point, you engage the secondary cam profile and it picks up where the primary profile left off with no dip in power. The way you determine where your primary cam profile falls off and your secondary picks up is to do a dyno run with the VTEC point set very high so as to get enough data for the primary profile, then with the VTEC point set very low to get enough data for the secondary profile. Compare the charts, see where the lines meet, and there's your VTEC point. Deciding to arbitrarily lower the VTEC point by 1000 rpm or so will not really do anything for you. You do not need to change your VTEC point nor will you gain much power from doing so unless you have changed your cams and they need to be tuned.
VTEC is actually very simple in its concept. Instead of one cam profile you have two, and you can switch between them. Any cam profile has a range of rpms where it is at peak efficiency. The ideal point for the VTEC switch is determined by the point at which the primary cam profile will make the same amount of power as the secondary cam profile. At this point, you engage the secondary cam profile and it picks up where the primary profile left off with no dip in power. The way you determine where your primary cam profile falls off and your secondary picks up is to do a dyno run with the VTEC point set very high so as to get enough data for the primary profile, then with the VTEC point set very low to get enough data for the secondary profile. Compare the charts, see where the lines meet, and there's your VTEC point. Deciding to arbitrarily lower the VTEC point by 1000 rpm or so will not really do anything for you. You do not need to change your VTEC point nor will you gain much power from doing so unless you have changed your cams and they need to be tuned.
Originally posted by qtiger
I don't know of any way to determine VTEC engagement point except with trial and error.
I don't know of any way to determine VTEC engagement point except with trial and error.
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From: Dallas
Originally posted by qtiger
That will give you a ballpark figure, yes, but playing connect the dots on a dyno plot is a lot less useful than say, 5 dyno runs.
That will give you a ballpark figure, yes, but playing connect the dots on a dyno plot is a lot less useful than say, 5 dyno runs.
So OG it hurts.
Joined: Mar 1999
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From: VA
Originally posted by XSrcing
holy shit your a genius!
holy shit your a genius!
my genius?
don't you mean you're a genius?
