Well, I want to be able to control my fuel. And these are basically my two choices. I am sooner or later going to get different cams which will require the VTEC controller. But I guess my question is will the V-AFC pretty much eliminate the need for the FPR?

thanks for the help...

 

Yes..it will pretty much eliminate the need for a FPR.

 

no, only to a point. Once th Injectors reach 100% duty cycle, the map-tricking method does nothing. Also, you can only add +/-10% before you throw a code (and some say adding more than like 7% doesn't do anything). For your setup I'd get the FPR (you could have had mine for free!). The V-afc will be a waste of money now.
-C

 

Agreed. Get an FPR now and the VAFC later when you get the cams. I bought a good used B&M FPR from a local guy. Works good, but it only raises pressure to 60psi. when i got my cams in a bought a VAFC later and installed it, then got it tuned. good luck!

 

Thats is not true. i ahve my idle leaned out 37% and have had no problems at all with any codes. I have also adjusted the fuel past +7% on the dyno and the A/F Ratio changed..so obviously it does have an affect past 7%.

Honestly..get both Id say.

 

wierd, others instantly get a code when adding about 10-12%. My friend has the same thing happen with his fields. The code is a map code. What OBD are you running?

But seriously he just has an intake, getting a v-afc is like getting a Hondata for a d16a with just exhaust. j/k, but cost/gain would be Null until other mods. Now, if money is no object, just get a Hondata right now.
-C

 

Im running 96-98 OBDII

Ive added as much as 10% and didnt get a code...but also it wasnt at that high for very long...so maybe I would have had a code. Currently I have the 5500+ RPMs at +8% and havnt had any problems...and idle is -37% as I said. Ive had that setting on the idle for probably 2 months now without a code.

Then again..Im also running a test pipe on an OBDII ECU and I dont get a code..so maybe my car is "special"

 

plus, when you set your fuel for idle, the computer is running in open-loop so it overrides the map settings ans adjust fuel according the the o2 sensor's A/F ratio. It only forces it when you are at WOT (closed loop). HTH, -C

 

Why would you need more than 60psi fuel? I'm sure you're just wasting fuel, I doubt you need that much. What is your setup. You can get a custom ecu that widens pulsewidth of the injectors and raise the fp just a bit, then take or subtract fuel where you need it with a VAFC.

 

I got the car dyno tuned and the extra pressure was yielding more gains. I may have been able to gain more if I had a bit more pressure. The VAFC was tuned at the same time. I was recommended to eventually upgrade my fuel pump and injectors but I am fine for now. BTW, I have CTR cams and so on, hence the FPR and VAFC. And I have no problems running too rich.

 

sorry C, I don't like purple things in my engine bay

i'm getting an A/F ratio guage so I know how my car is running but it really wont do me any good without some way to adjust the fuel...I was just thinking if I could avoid the FPR than it'd be cool.

Does the vafc offer a memory? or say could i have two different curves to work with. So that I could change it quickly when I am spraying? I'll keep doing some research...more comments welcome

 

No, it doens't. It has two fuel curves, namely part throttle and WOT. Since you have the ZEX, your fuel pressure is automatically increased when you spray. You should be right on track. HTH, -C