Using the following which is the correct order for tuning. I.E. Dial in cam gears before adjusting VAFC, etc.

Cam gear (SOHC F22B)
Fuel Pressure Regulator
Vtec engagement on VAFC
A/F ratios on the VAFC
MF2 (comes w/fmax kit)
Boost Controller

Pardon my ignorance, but the dyno shop wont tune w/o paying $50/hr more.


[Modified by niedejb, 8:41 PM 3/6/2002]

 

1. boost controller
2. mf2 and VAFC...fmax had my mf2 extremely rich...adjust these to get the right A/F's
3. cam gear
4. fpr
5. Vtec engagement
6. fine tune mf2 and VAFC

 

Wont changing the FPR after the VAFC and FM2 move all the a/f ratios around?

 

yea, since u are raising or lower fuel pressure but that is why i have fine tuning the vafc and mf2 again...the inital vafc and mf2 tuning is to get the car running right

 

here's what i would do:

1) tune FPR and MF2 (combined thing IMO) to make sure you're running rich EVERYWHERE in your rev range
2) set up the boost controller and verify that you're still running rich (like 11.5:1 or richer)
3) vtec point -- do one run with it set high, and one run with it set low. set the vtec point at the rpm where the high & low curves cross
4) tune cam gear.
5) might want to re-tune vtec point after tuning cam gear
6) use VAFC to fine-tune a/f ratios to a flat ratio (i.e. 12:1 all across) -- lean it out at points where you're rich. You do not want to try to use the VAFC to add fuel...

-Xerxes

 

Why?

 

You can't add fuel with a V-AFC. Anything above stock pretty much throws a CEL.

Partial throttle adjustments (closed loop) get thrown out by the stock ecu.

You use the v-afc to take out fuel (fool ecu into thinking it is not getting as much air as it actually is)

Dustin