VAFC II Full Installation Info - Page 4

xproductionz · 10-17-2004

its -37 on both narrow and wideband all the way.. until it hits around 4500rpm with vtec.. then it goes to -34 cause it runs hella lean if i leave it -37 all the way across... then around 6000rom it goes to -33 again cause itstarts to run lean around there

To remove this ad, register today for free or log in if already registered!

03civda · 10-17-2004

so, i'm confused. hook up the TDC wire or not. if you get more power without it hooked up, wouldn't that be the best scenario?

gearbox · 10-17-2004

I don't think it matters. Mine was hooked up when they tuned it. I doubt it would affect anything, as the only goal is to get the a/f ratio flat around 14:1

I don't think the tdc has anything to do with adding more fuel. Maybe with vtec engagement, but you shouldn't change that anyway.

xproductionz · 10-18-2004

lol. that why its called the real complete fix.. all wires are connected except one..

03civda · 10-18-2004

i just got off the phone with APEXi and the guy told me not to hook up the TDC or the VTC wires. He said those are only for the K series motors. He also said that if I installed it, it would set off my check engine light, is this true?

xproductionz · 10-18-2004

dont think so.. look at gearbox and me..we both did it and its fine no CEL.. we never hooked up the vtc wires anyway cause there is no wire to hook it up too... all the TDC wire does is tell the vafc2 when it hits TDC.... no biggie..just means one less wire to install.... i also called apexi before buying the vafc2 and they told me that it wasnt made for our U.S. D17 cars and isnt hasnt been officially meant to be installed on our cars... he also said thats why our chassis code isnt in the manual... but if you look at how many people is installing it then u know it works...i also called apexi to see if i can just use it as a stand alone vtec engagment cause i did a head swap so i needed something to engage the vtec... and there response was it wont function unless u have a signal being sent to the ecu to the vafc to engage it... boy did i prove them wrong...

gearbox · 10-18-2004

Apexi doesn't know anything about our cars because technically they don't support it. So it's up to us to figure it out...just like the e-manage. I have everything installed like it says in this thread and it works great. I got it tuned and everything. Car feels nice, and there's no cel or bad things happening.

gearbox · 10-23-2004

A few weeks after tuning on the dyno, the car is starting to feel like it did before. I can't notice a difference anymore, and the rpms aren't as smooth as they were a few days after tuning.

03CivicEX03 · 10-25-2004

^^ possiable be the afc going back to stock?

down_ · 11-02-2004

SOmeone posted that the ecu will reset itself or some shi$w like that try disconnecting the battery to reset the e.c.u

gearbox · 11-02-2004

I should be getting another dynotune next year, so I'll let you guys know if anything changed.

82801BA · 11-02-2004

I have my VTEC engagement set at 3000/2800, there I feel the car runs a lot smoother, and really picks up right after 3000...At 3500 there is a dip on the cam change-over and I feel a complete null right after VTEC engages .

If my design analysis is done right, then I would say no matter what, rasing the VTEC engagement point too much will cause loss of mid-range power. So, keep it low, and make sure that you don't actually feel too much difference, as too much difference means that it runs under-powered and suddenly jump to wherever it should be.

Anyway, the temperature here now is getting cool, now 58 deg at 6pm, should be some nice day to run(also, ruin) the car

...

mystery · 11-06-2004

the instructions on the VAFC2 showed that the VTC and VTM were not on the ECU diagram... i see thats it up on top so do you think i would need to wire those up or just leave it.?

gearbox · 11-06-2004

Just do whatever this thread says at the beginning. The apexi instructions are wrong, and not installing properly will trigger a check engine light.

xproductionz · 11-07-2004

like gearbox said.. read the beginning of the thread.. i too came across the same situation a while ago which is the reason why i created this thread to help other people out..