View Full Version : Apexi VAFC 2 and ECU, can I get both mods?
DC2-PWR
06-01-2010, 02:20 AM
I'm having trouble finding threads on this matter. My brother has given me a Apexi VAFC 2 for free, I'm getting it wired next week. But when I read most threads they say "don't buy it, get a ECU instead."
I'm wondering that if I get this Apexi computer fitted, can I buy a ECU in future? Or can I only do one modification to the chip? I would love to have an ECU aswell with the Apexi VAFC 2.
Sorry for the Nooby question but I'm really curious and I don't know anyone that knows the answer for this matter nor my bro.
Cheers
DLO01
06-01-2010, 02:30 AM
Yes, you can have both.
DC2-PWR
06-01-2010, 02:32 AM
Yes, you can have both.
Ohhhhhhhhhhhhhhhhh your a life saver,
Thanks.
tOniies
06-01-2010, 02:27 PM
Why would you use the VAFC anyway. I got my one in my car, and i want to yank that shit out. People have been telling me its nothing but trouble in your car.
VAFC's are good and Bad.. depends what you want from them etc. APPARENTLY some OBD2 cars can re-learn around the VAFC's tuning parameters to essentially make it useless. I am not 100% sure of this I suspect it's an internet rumour LOL.
VAFC is limited as to what it can do compared witha proper stand-alone tunable ECU. it can only adjust the Air/Fuel Ratios and VTEC points (i dont think it can do ignition ?) and cannot alter your rev-cut etc.
there are cases where a VAFC is used in combo with an ECU but normally only for chipped ECU's (Spoon/Mugen/Hondata* etc) where some small changed to AFR and VTEC points are needed to allow for varying conditions or engine modifications etc.
I am considering a VAFC to ride piggy-back on my SPOON ECU as the Spoon ECU has the 180km speed limit removed, and a 9,000RPM rev cut - however I need some AFR tuning and want to RAISE the VTEC point - Spoon VTEC controller only allows you to LOWER the VTEC point.
*Hondata is just a chipped OEM ECU with the ability to have the chip re-flashed (and data logging ability).. but if you dont have all the hardware and software it's only as good as a chipped ECU as you cant alter the program set by your 'tuner'.
All the HARDCORE people will tell you that a VAFC is crap.. but for I/H/E modifications (or even a stock motor) with a competant tuner you can get some great results - i've seen 10-15 HP gain on an EK4 that completely changed the way the engine behaved (for the better!!).
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