Vafc

[taizon]

for those who have bought the VAFC from the store brand new..
wat exactly do u get in the box?.. i.e. the VAFC unit.. wiring looms.. stand??


also.. is this how the wiring loom looks like? other than this one having solder on it.. ????

last question... for those who have these, did u just splice the wires from the ecu and solder these wires on?.. or have u bought an extra wiring harness for it?
http://img91.imageshack.us/img91/4647/vafc6pj.jpg

[CUL8R]

thats exactly wat u get up there...cept maybe itll cost more for the apexi stand

if u want a loom go to here (http://www.boomslang.us/vafc2.htm)

question why u getting vafc and not series 2???(VAFC2)vafc2 is better, more tuning points.

i had a vafc2 for a while and the change it makes is immense! but if u have an OBD2 ecu it will eventually change back to stock due to it adapting back to emmissions.
and yes i had the wiring loom spliced and idealy u should get the harness.

i know run standalone and it shits on vafc2..

stock tune<vafc2<standalone ecu

[Eclipsor]

If you can splice the loom yourself and are confident you can do a good job that should be fine. Otherwise getting one of those harnesses probably wouldn't cost too much more than paying someone to do it and would be a neater solution.

If you're in Brisbane and want a hand installing give me a yell.

[**Ghost**]

thats exactly wat u get up there...cept maybe itll cost more for the apexi stand


i had a vafc2 for a while and the change it makes is immense! but if u have an OBD2 ecu it will eventually change back to stock due to it adapting back to emmissions.

stock tune<vafc2<standalone ecu

thats misleading. I had VAFC and yes the OBD2 does seem to go back to its ideal clean A/F ratio thats environmentally friendly and will do after about a week.

however if you reset your ecu (as in pull the battery or fuse for 5 minutes) then the compensation ur OBD2 makes for the VAFC is gone and it works as normal

[taizon]

yes the OBD2 does seem to go back to its ideal clean A/F ratio thats environmentally friendly and will do after about a week.

however if you reset your ecu (as in pull the battery or fuse for 5 minutes) then the compensation ur OBD2 makes for the VAFC is gone and it works as normal
what do u guys mean??..
are u sayin.. after tuning with the VAFC.. a week later or wateva..the ecu will change back to the stock A/F ratios???? if so... whats the point of havin one?

ive gotta dc2r.. so im assuming thats the OBD2

i will b lookin at the VAFC II as well.. but as ive only got the I/H/E mods and i wont b doing any more mods to the car. i dont think having either VAFC or VAFC II will make much of a difference.... 'or will it'?



[Eclipsor (http://www.ozhonda.com/forum/member.php?u=2426)] - damn i wish i was in brisbane!.. thanks for ur offer... but im down in SYD
by the way.. would u kno where i can find the extra wiring harness?.. and also how much would i be lookin at?

[CUL8R]

thats misleading. I had VAFC and yes the OBD2 does seem to go back to its ideal clean A/F ratio thats environmentally friendly and will do after about a week.

however if you reset your ecu (as in pull the battery or fuse for 5 minutes) then the compensation ur OBD2 makes for the VAFC is gone and it works as normal
yeah no problems mate, pull the fuse weekly and then when u go have a service honda will have nothing to reaf as to know how ur cars running.

sorry guys im not 100% certain on this but from the best of my knewledge i was just stating the facts and it is true that the stock obd2 ecu gets signals from ur O2 sensor, which then does adapt the fuel pumped into the engine and does change ur fuel delivery from what the vafc/vafc2 was tuned for. it still is a much faster car, and feels soooo much better at WOT.

hell for the money ( i think i spent about 500 for it to the point when it was tuned) it was great value, but the fact of the matter is ur tricking ur ecu into thinking somethings happening so u kinda have controll of ur fuel delivery.But the ecu does impliment changes in the long run.

so yes resetting ur ecu will get u back to optimum tune, assuming u reset ur ecu just before tuning so the ecu didnt impliment any changes due to ur mods changing the breathing of ur car.

what im trying to say is

ecu reset.....get I H E mods....ecu changes a/f a lil.....get vafc and tune....ecu will slowly change a/f....so reset ecu....u go back to the start and not the point of tuning.
so even then ur tune will not be ideal. or will it?

[pornstar]

incorrect martin

[CUL8R]

really????which part?
ok then, sorry guys...care to enlighten me?

[pornstar]

ur correct for alot of the parts, but theres alot theres also incorrect that has been recirculated.

do a check on obd2 piggy back relearning as you say, in real world, do a dyno say 1-3 weeks on, see what your af trims move by :)

[CUL8R]

yeah...like i said the car felt like it hadnt lost any power, maybe a tiny bit right up high but it was always still very much quicker than with stock tune.
im not doubting that it would be a stupidly small change in tune.

i must stress that when i did this mod tho, i wasnt planing on chasing power, IHE was meant to be it, and for that combination the vafc2 woulda been enough for sure, gives u a decent WOT tune and high cam crossover can be shifted a lil to eliminate the torque hole in the preludes tune before vtec (not so bad prob for dc2rs). now that i have much bigger plans the vafc was clearly not enough, hence why ive gone standalone but yeah its good bang for ur buck

so ur saying andy that if u had a vafc2 tune for say a year, ur a/f change will still be minimal?

[locote]

I had a safc2 in my GSi teg and it felt good for a period of time,,
then i took it to drags and had a few runs with the safc2 on, then i disconected it and let the ECU do its thing and my times and term speeds didnt change at all so that proved it to me that the safc2 was doion F all...
Just my experience

[saxman]

to get good gains, the afc, just like every other fuel controlling device, is going ot need wideband tuning time. Only problem is it's much much more limited on this aspect than an ecu, and offers no timing control.


As for the ecu relearning, and such... this is accurate to an extent. It occurs for part throttle/light load driving, but doesn't occur for WOT driving.

[taizon]

saxman - so wat u are sayin is.... after the tuning is done with the VAFC. for normal driving conditions the ecu may relearn some of the a/f ratio..

but if u decide to giv it a bit every now and then, the a/f ratio should stil be the same from the time it was tuned for that exta power..... is that correct?.. im just tryin to understand all this


.......
like i said b4.. ive got a dc2r - basic mods.. I/H/E. and most probably wont b doing any more mods to the engine..
i would like to get my car tuned for these basic mods.. but is it just a waste with the vafc

[pornstar]

yes what he means is the full power runs dont change :)