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You won't feel it, compared to the twin cam vtec engines (B-series, F20C, H22A, et al)
It is a different type of vtec system that is used. In the Jazz, it is an economy version. When vtec is not engaged, the engine runs on 3 valves per cylinder, and when vtec engages it runs 4. It's not like in the twin cam version where once vtec engages, you are engaging a different cam profile. In simple terms, the Jazz vtec just opens another valve.
Hope that helps a bit
Having one of the intake valves closed below 3500 promotes swirling of the air/fuel mixture. This means the engine can run extra lean and hence save fuel. It also improves low end torque by increasing the intake air velocity entering the cyclinder. Very clever.
Anyone here on the forum have vtec controller??
Being able to control when vtec kikcs into place.. earlier..
you want earlier than 3500rpm? will lose the fuel effiency that the jazz is designed forQuote:
Originally Posted by Hoyinpng
for me.. nope...
but for those who want to get the MOST out of the little jazz..
thats the best way to go.. i rekon..
panda - re-read the posts. It kicks in at 2900rpm.
And yes, I have vtec controll via the V-AFC 2.
when did u set it to kick in???Quote:
Originally Posted by Jus-10
The L-series VTEC engine is design only for fuel economy and low emissions. It uses only a 2 rocker arm system compare to the tradiational 3 rocker arm system. The VTEC starts at around 3000rpm and focus on mid rev.
If you are interested take a read of the L-series engine on TOV :D
http://asia.vtec.net/Series/FitJazz/lseries/index.html
Jus-10 is it worth getting a VTEC controller in a Jazz? I was also considering one but I have heard that they do more harm than good on a stock engine. What do you think?
personally i would think a controller is of real benefit if you have modified your car in a specific way or purpose ie for track or drag and use the controller to tune your fuel mixture, vtec x-over etc to suit the mods
for jazz daily driving and the vtec point already set so low i would not consider one, my 5c :o
I don't see too much point in a V-AFC. Honda would have accounted for the low power output of the jazz and compensated for it by the Vtec engagement ranges. Generally I have heard from many that changing these does more harm than good. Im sure Jus-10 seconds this. Its a good feature to have around, and to know when ur vtec actually hits, but other than that, i severly doubt its use and the price doesn't justify it either. Of course I'm not stopping anyone from buying one. Just my 2 cents.
can use vafc for looks ;)
i hven't tuned my car yet, i've left the settings default and vtec is kicking in @ 2500rpm with throttle on >25%
if the throttle is < 25% vtec kicks in @ 3000rpm