I'm wondering besides price, what the pros/cons are of each of the above controllers? I've read the literature but I'm confused as to whether the complexity of the Apexi unit makes for better tuning. Based on the company data, the Apexi unit helps tune at mid and WOT whereas I'm lead to believe that the Fields unit is used to help tune for WOT.

Since there are some corners on the track that I drive on that do require throttle modulation, I'm wondering if I can still fully benefit from the Fields controller. Anyone with personal experience using either of these controllers?

Cheers

 

You might want to ask in the Technical forum, if you haven't already.

 

Excellent suggestion!

 

get the Apexi unit, the Fields is total junk and can not do 10% of what the Apexi unit can

 

I say get the Apexi VAFC2 unit, it has more adjustable points than the VAFC1 and the Fields unit. However, take this into mind, at less than wide open throttle the ECU is always going to look at the O2 sensor to help adjust the amount of fuel injected into the motor. I think that you would benefit more from a programmable ECU, rather than the money spent on a fuel controller. You may look into Uberdata and Hondata. Then once you got one of those set ups, get some dyno time and tune your motor for more exact performance.

http://www.hondata.com/

http://www.ecimulti.org/uberdata/

 

Let me add a little background to my application:

Track only car:
- DC2 with obd1 conversion harness/P72 ECU and skunk2 programme
- CAI
- 4-1 header and dump pipe

I'll be tuning the car at the dyno but I don't want something that's needlessly complicated to use. All I need the controller for is to realize the maximum power gains with the above set-up. Currently it feels like it is running really rich - it bogs at mid throttle and sometimes has a tough time maintaining idle while gridding.

could you please elaborate when you say the Fields unit is garbage? I'm not convinced that I really need all the features on the Apexi unit.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18CXr &raquo;</TD></TR><TR><TD CLASS="quote">get the Apexi unit, the Fields is total junk and can not do 10% of what the Apexi unit can</TD></TR></TABLE>

I agree, I've been using the Fields for a couple of years now. It worked OK at first but has since been giving me problems. It would sometimes bug out and move VTEC engagement mid race. . It happened to me twice at BeaveRun before I replaced it, then once during qualifing at VIR North. I'm done with it after this season.

The only explanation I have would be that if the oil pressure is not high enough to engage VTEC at your set RPM, then when it finally kicks in, the Fields will reset the VTEC engagement to that RPM. Or it's just total crap that likes to leave me high and dry mid race.


Modified by 6ghatch at 7:12 AM 9/14/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18CXr &raquo;</TD></TR><TR><TD CLASS="quote">get the Apexi unit, the Fields is total junk and can not do 10% of what the Apexi unit can</TD></TR></TABLE>

You got that right. If it's not suspended in mid air with a fan blowing on it, forget it. It overheats and goes crazy. Plus if you set anything to more then +/- 10% and go run your car for more then a couple minutes it start sputtering all over the place. I guess irregular voltage or to strong a signal to the MAP sensor. Either way it sucks. Well I guess that's a little harsh. Shall we say outdated technology? Hondata S100 would be good for a HC type race. If you have no restrictions AEM EMS is the best affordable I option I would say.


Modified by Mr Milano at 1:29 PM 9/14/2004

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B18CXr &raquo;</TD></TR><TR><TD CLASS="quote">get the Apexi unit, the Fields is total junk and can not do 10% of what the Apexi unit can</TD></TR></TABLE>

I third that motion.