VAFC2 on Jazz?

[ahcash]

Hi,

Just want to find out how many of you have VAFC2 fitted onto your Jazz? Just a couple of questions I want to ask.

1. Power gain.. how much? how many percent?
2. Expected fuel consumption as compare to stock
3. Known problem or side effect?
4. I was told that the ECU will override the VAFC2 settings after a while.. is that true?
5. Will it void the Honda warranty?

Pictures in car would be nice... thanks in advance.

[sassy_fit_vtit]

1. it all depends on if u tune it or not.. does nothing if u leave it on the same setting su got it in
2. Fuel.. also depends on how much u tune it, use vtec more fuel, u can also change ur fuel settings to up to +/- 20%
3. none that i know of
4. nopes vafc piggy backs the ecu
5. yes it will

[sassy_fit_vtit]

http://tk.files.storage.msn.com/x1pnp_rgmi5o50JjXu9AUPzwHB6JeXCQfHkuw1_GnsOaR3mu8D VgAs3kBswrGLhlcT-oL2JZntHDHVnJ_Y0GWvsPjfoBesX8PM4a7VJu3mR2shc_6gdSs K5-8B-ibIMUax3UHbAzlvBfWc

[ahcash]

1. it all depends on if u tune it or not.. does nothing if u leave it on the same setting su got it in
2. Fuel.. also depends on how much u tune it, use vtec more fuel, u can also change ur fuel settings to up to +/- 20%
3. none that i know of
4. nopes vafc piggy backs the ecu
5. yes it will


thanks for the reply..

So, how much gain do you get sassy?

Yeah .. I was told that the ECU will override the settings of the VAFC after a while.. that's not true then...

Do you know whether there is enough space to put the VAFC on the right? (where the little Jazz is?)

http://photos.imageevent.com/wongy/thejazz/websize/2005-03-22%20004.JPG

[sassy_fit_vtit]

there is i think but it'll be at a weird angle, havent dyno'd to get a number and i cant get a number with the vafc alone anyways cos of what i have done to my car.. but get someone to tell you what all the charts are on the settings and play around with it.. ideal rpm for vtec to kick in if u were to lower it is 3700rpms.

i like ur gauge cluster and steering wheel btw what year model do u have?

[Zimp13]

vafc is ok... its installing and tuning that costs a bit too much.... almost the price of another vafc.... thats y i sold my vafc last time....

[Jezzah]

i was told that it was useless installing it on a AT CVT.
because the CVT already has a vtec controller. when you apply greater force on the accelerator, it will ingitiate the vtec. so in order words, vtec will kick in when u accelerate harder

[sassy_fit_vtit]

.. vtec kicks in at a certian rpm which is set in the factory ecu.. for example in the jazz it kicks in at about 5000rpms, what vafc does in reguards to vtec is re-sets the rpm that vtec kicks in at. when my mechanic was explaining it to me he said that vafc's piggypacks etc pretty much lie to ur factory ecu.. if that makes any sense

[yourfather]

I don't really see the point in putting a V-AFC on a car. They make pretty good looking gauges, but the power that you'll gain and the fuel that you will save probably won't be worth the investment.

Maybe you could put the money for the V-AFC towards some headers or something?

[Zimp13]

vafc not only vtec point... also the amt of air

[yourfather]

.... sure, but how much more power do you think you can get ?

[magii]

.. vtec kicks in at a certian rpm which is set in the factory ecu.. for example in the jazz it kicks in at about 5000rpms
according to the offical honda website vtec kicks in somewhere in between 2300rpm to 3600rpm.

For me i can feel it after 3600, when i drive about 115km on the freeway its about 3400rpm, but when i hit about 120km it hits 3600rpm, thats when the car gets really noisy cuz of vtec :cool:

[Zimp13]

.... sure, but how much more power do you think you can get ?

how much extra power do u think any computer chips or ecu can do to jazz anyway??? dont think of the kw increase... think of the percentage increase.. i d say 5-10% increase is achieveable with vafc... is that good enuf from a $400 item of which when u sell, u still get at least half of the money back... as i mentioned, only the labour side is not worth.... cos all gone....

[NvM]

I don't really see the point in putting a V-AFC on a car. They make pretty good looking gauges, but the power that you'll gain and the fuel that you will save probably won't be worth the investment.

Maybe you could put the money for the V-AFC towards some headers or something?

Decent set of headers are the price of 2 V-AFC's, and if u sell it off u will prob get 250 or around there.

[racinghonda]

I spoke to my tuner who installed and tuned a VAFC2 on a Jazz VTiS. No matter what settings he tried, he didn't gain a single KW. This Jazz had I H E mods.

[yourfather]

I spoke to my tuner who installed and tuned a VAFC2 on a Jazz VTiS. No matter what settings he tried, he didn't gain a single KW. This Jazz had I H E mods.

yeah, see, you're probably better off saving your money and spending it on rice mods

[racinghonda]

yeah, see, you're probably better off saving your money and spending it on rice mods

Price of a brand new VAFC2 and add $100 and you have yourself Spoon Sports springs for the Jazz . . . .

[yourfather]

sounds good :D

[Zimp13]

I spoke to my tuner who installed and tuned a VAFC2 on a Jazz VTiS. No matter what settings he tried, he didn't gain a single KW. This Jazz had I H E mods.

Really? many are using vafc on jazz overseas still... as well as emanage....

[yourfather]

E-Manage is a bit different to V-AFC I believe

[Zimp13]

emanage has injector adjustment in it... but with vafc, this can be solved by adding ITC (if can still find one as it was discountinued)...

[pornstar]

both incorrect, emanage can work the same as vafc2 or it can be worked differently... point however is that ur both arguing about it wrongly.. the ecu doesnt make power, the tune does.

vafc and emanage both alter the tunes.

[yourfather]

yeah but, my point was how much more power would you make Stock 1.5 litre jazz motor, with a V-AFC compared to just running the regular Honda ecu?

[pornstar]

its like any motor stock, not worth it.

much better money spent elsewhere, i dont care if its motec, autronic or a chip like hondata or even a piggy back, stock engine... get something else.

[ahcash]

pornstar,

PM sent. So, if stock engine, what would you recommend?

[Zimp13]

both incorrect, emanage can work the same as vafc2 or it can be worked differently... point however is that ur both arguing about it wrongly.. the ecu doesnt make power, the tune does.

vafc and emanage both alter the tunes.

u saying emanage are exactly the same as vafc? so wats the point of having injector harness in emanage?

work differently? care to explain??

[sassy_fit_vtit]

personally. i need something atm.. im gettin emanage. the stock ecu doesnt exactly read boost that well

c'mon pornstar.. give us some more advice! =]

[pornstar]

ahcash inertia mods are the way to go. Look at good quality flywheel and clutch, lower final drives, these things will benefit u.

Zimp: Sorry to confuse you, the emanage CAN work differently to the vafc. The emanage has 2 distinct modes for tuning. 1 way is to use the mode that the Vafc uses, the other way would be as you said to modify using ignition and injection harness. Point of fact still remains that its the tune that makes power :)

Sassy fit: I havent ever tested the emanage on the Jazz, but I have used emanages on many of my turbo hondas for the more economy setups. Works fine. Provided you can wire it in correctly there shouldnt be a problem with it working. I prefer the Autronic or the Motec systems, they are by far the best system for any car. IT amy seem expensive at the start, but the ability to read 50psi of boost from the unit, autotune, anti lag, vtec on load, ivtec, these 2 ecus cant be beat.