vafc 2 setting question
08-03-2006, 07:38 AM
#1
Registered User
Thread Starter
vafc 2 setting question
is there any harm in dropping my vtec engagement point down to 5300rpm?
and if i do, what would be the point for diss-engagement...
i tried searching for a "settings thread" but didn't come up with anything.
this is what is done performance wise to my car:
00 s2k w/spoon intake, invidia exhaust and test pipe.(and the vafc 2)
if i can be pointed in the right direction that would be great.
thanks!
08-03-2006, 07:45 AM
#2
no car leaves the factory 100% alike, and therefore no car will have exactly the same settings with the vafc. the only way to truly know if it will affect your car adversely is to strap it to a dyno and see if it improves your hp/torque curve or worsens it. 5300 rpm is still a decently high rpm so it should not affect driveability/gas mileage, but having vtec kick in too early will work against you
08-03-2006, 08:56 AM
#3
Registered User
Thread Starter
i do have a dyno time scheduled in a couple weeks. in the mean time do you see any reason why i can't just knock the engagement point down a few 100rpms?
08-03-2006, 09:15 AM
#4
it shouldnt hurt anything besides (maybe) mid range horsepower and gas mileage (if you spend a lot of time in the 5300-5700 rpm range), the only thing that changing the engagement point does is switch to the high performance cams earlier, it is my understanding that from 5700-6200 (normal engagement point range) to redline performance will be the same as if you didnt mess with the engagement. the only benefit to lowering the engagement is that with the right tuning, bolt-ons, etc, you will be able to have a wider, longer powerband
08-03-2006, 09:45 AM
#5
Registered User
One thing you also have to keep in mind is that the cars ECU has the air/fuel map tuned at the "engagement point" of V-Tec to properly get power. The V-AFC is just a piggy back system that tricks the v-tec solinoid into activating. A lower point of activating will result in possible knocking due to the improper air/fuel mix.
If not tuned properly, you will lose power from your new "engagement point" up until the factorty V-Tec setting. If you play with it now, when you go to get dyno'd, you will notice a dip in the power and torque curve from the lower V-Tec engagement point, until the factory V-tec point is reached. That's when the power will climb again.....
If not tuned properly, you will lose power from your new "engagement point" up until the factorty V-Tec setting. If you play with it now, when you go to get dyno'd, you will notice a dip in the power and torque curve from the lower V-Tec engagement point, until the factory V-tec point is reached. That's when the power will climb again.....
08-03-2006, 10:07 AM
#6
Originally Posted by North Star,Aug 3 2006, 12:45 PM
One thing you also have to keep in mind is that the cars ECU has the air/fuel map tuned at the "engagement point" of V-Tec to properly get power. The V-AFC is just a piggy back system that tricks the v-tec solinoid into activating. A lower point of activating will result in possible knocking due to the improper air/fuel mix.
08-03-2006, 10:25 AM
#7
Registered User
Originally Posted by W0Pdego,Aug 3 2006, 10:07 AM
good point, didnt think about that
Yeah, the V-AFC is one of those too good to be true products! It is awesome when tuned properly, but there is now way it's a straight plug and play!
Thread
Thread Starter
Forum
Replies
Last Post