Vtec Controllers

[cheebye]

Hi,

anyone using an apex V-AFC? Do they really make a difference to the performance of the car for what it's worth?

Retail for those are about $750. I can get it brand new for $400 direct from Japan but if they're just some fancy piece of machinery that just looks good at nite, I'd rather spend the money on a good set of spoon headers first.

Any comments, feedback regarding that v-afc is appreciated!

- M

[BLKCRX]

You hit the nail right on the ball… there nothing more than fancy blue flashing lights that look ricy at nite time, spend money on a fully tuneable ECU or intake / exhaust mods, or drop in some nice toda cams !! or toda cam gears. Honestly thow the stock exhaust system is good !! as long as you can tune your car for it…..

Check out the ECU compression thread

http://www.ozhonda.com/forums/viewto...15&start=0.

Regards James

[XXpl0Sive]

Sorry to hijack, anyone use the SAFC as well? What are you thoughts on this?

[BLKCRX]

SAFC VAFC same stuff... VAFC just has a basic vtec on / off feature....
Most .. well ALL vtec controls only turn vtec ON / OFF at a certain RPM, Honda designed VTEC to be turned on with oil pressure is correct, manifold pressure is correct... engine load is correct and rpm is correct.... it shouldn’t be turned on / off !! not only you need to provide the correct ignition and fuel for the cross over period, no vtec controller does this, and not many after market ecu’s do this either !!

Regards James

[Setanta]

It's a waste of money as James said. Keep saving on the money you would have spent and eventually get a fully programmable ECU.

[MRJDM]

dude its all so fancy as james said.all im saying is listen to james he knows his stuff
im going to get the HONDATA chip very soon and i know it will be worth it
8)

[A'PEXi]

its not totally a waste of money if all you want is to make vtec/air/fuel adjustments. its made for a reason.... of course, ecu's open up your options, but its also more expensive.

[vti-2]

its not totally a waste of money if all you want is to make vtec/air/fuel adjustments. its made for a reason.... of course, ecu's open up your options, but its also more expensive.

I agree that it's not totally a waste of money. If you have lots of mods already, then forget the VAFC, save for a proper aftermarket tunable ECU. If you just have I/H/E and are looking at adjusting vtec/air/fuel (as said above) then go for it. It's fairly cheap and will do the above.

BUT, do not get this just because it can adjust the VTEC crossover point. So many guys buy VAFC's purely to bring VTEC in earlier. It does NOT deliver more power and IMO only makes a shitload more noise earlier in the RPM range. In fact, there are a few guys in Melbourne that have had their cars dyno'ed with VAFC adjustments (set to 4000rpm etc) and have lost power. Coolies on this forum had a piggyback unit (yes it wasn't a VAFC) but it had VTEC set lower than the standard VTEC point and he was being robbed of power. Just ask him and pornstar!

Bottomline what everyone is saying, don't get this for the rice factor. There are better ways to spend money on making the car go faster!

[VTEC16]

What do the "fully tunable ECU" preachers say to the above statement?

Do you guys think that if your only doing limited mods (i/h/e) then the VAFC or fields vtec controller would be worthwhile (keeping in mind the cost)?

Obviously the piggyback ECUs dont allow the same gains....but is it still worthwhile?

[BLKCRX]

VAFC's do bend the ouput voltage of the ECU, which imminently after the tune is great, although the changeable points is very very limited, and only adjusts full throttle, but the ecu will learn and over write all the VAFC fuel settings due to the long term and even short term fuel trims.
Which results in the car's with VAFC's requiring another dyno sessions, there's only so much piggy back devices can do.

I find a lot of people spend a little bit of money on pointless modifications, rather than saving a little and getting the best....the amount of untuned vafc's running around out there is crazy ! purely because of the fact the ecu will auto learn.

A typical stainless steel exhaust system with a nice mulfer costs around 1500$ + add on the cost of extractors and that’s upwards $3000. Now I can guarantee you will get more HP increase from tuning a stock car with a fully tuneable ECU than you will from bolt on modifications such as a new exhaust with extractors for much less than the cost of a ECU, iv done the tests and proved this many times the stock exhaust is not “THAT” bad anything can be improved upon tuning is where all the power is.

Regards James

[Weq]

lol, if u pay $3000 or a full stainless exhaust system, ur a crazy man!

[BLKCRX]

eheheh 800$ apexi mulfer
1500 jap or us exhaust manifold ( extractors)
leaves like only 700 for labor a cat the rest of the exhaust.... mandrel bends.. etc ;-)

anyway back on topic...

Regards James