Sup guys....got 3 questions about vtec controllers.
1.) If I were to get it for my 94 lude, is there any special kind of wiring involved....well I know there is, but can I just buy an adapter that plugs directly into the OBD I? If there is one, where can I get it?
2.) What are the advantages of having one? Is there any kind of "gains" that you can achieve?
3.) Say Im getting my inspection done or something. Is there a way to save different profiles to where I can switch it back to stock settings?
Thanks in advance guys.
PS- I have another question, I just can't think of it yet
I'll take a shot at some of these questions. I'll tell you in advance that I have an SR with the H23 so I'm using a SAFC. Only difference would be wiring up the vtec wires to adjust the vtec crossover point:
1. I haven't seen any aftermarket wiring harnesses that work to just plug in. It's not really necessary because all you have to do is splice a few wires from your ecu. Just get someone who knows how to do this and it won't take them more than an hour tops.
2. I think every car is different when it comes to how they react to modifications. VAFC's allow you to change your air/fuel mixture throughout the rpm band and therefore to discover it's full potential the best way to tune it is on a dyno by a professional. I've seen gains of up to 10whp but also seen cars only get 5whp. It's all up to the tuning and the car.
3. With the apexi unit there is no way to save settings and jump between them. You'd have to write down your settings and then you'd be able to return all the settings to baseline.
Hopefully this helps! Sorry if it's not accurate, I've only got a mere H23 with no vtec but I keep it clean
Also, I have a question...
Right now I have a H23..Its got 150,000 miles so If I were to have something happen a swap to a JDM H22a could be in the
future??
SO the question is Can I use a Vafc and leave the wiring for the
Vtrec crossover taped and have the fuel and air configurations still functional?
thanks
so as for tuning it is there a website that shows like the 'best/typical' settings for the 4th gen?
Sucks you can't save it
Thanks slo.
I know there are websites that post settings, but I wouldn't trust them. Every car is different and each car much be tuned specifically to that engine. Using "cookie cutter" setting could end up damaging your car because you could run your engine extremely lean or rich at different settings. If you ask around for peoples settings you most likely won't get any help and they'll give you the same reason.
Myself, I still haven't go mine dyno tuned (no dyno around me) so I've kept the baseline settings. Untill I can get it tuned I'm not going to touch it. That's just me though...doesn't matter though, my car is parked untill april. Damn Canadian Winters
I just got my vafc tuned and on the top overall I gained only a few ponies, but my main gain and the one I care most about is midrange and I gained 13 big horses.
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04 Ford Powestroke Diesel Crew Cab, Shortbed,4x4, SCT Tuner,with Tunes from innovative Diesel,4 inch Donahoe lift,ARP headstuds,AFE Stage 2 intake,MBRP 4 inch Exhaust,4:30 gears from unitrax,18 inch KMC wheels(black) with 35 inch Toyo M/T's.
440 whp 800 torque.
Originally posted by irishpilot Also, I have a question...
Right now I have a H23..Its got 150,000 miles so If I were to have something happen a swap to a JDM H22a could be in the
future??
SO the question is Can I use a Vafc and leave the wiring for the
Vtrec crossover taped and have the fuel and air configurations still functional?
thanks
Im curious about the same thing. Can you get the V-afc with a H23 engine and just not use the V-tec line? It would have the same effects, correct?
Im curious about the same thing. Can you get the V-afc with a H23 engine and just not use the V-tec line? It would have the same effects, correct?
right. you can run a vafc on a h23a motor, just don't worry about splicing in the vtec and vtm wires. you'll be able to make fuel corrections; monitor throttle, rpm and pressure.
right. you can run a vafc on a h23a motor, just don't worry about splicing in the vtec and vtm wires. you'll be able to make fuel corrections; monitor throttle, rpm and pressure.
Or you could just get the S-AFC, which is a V-AFC without VTEC. Probably cheaper too
Or you could just get the S-AFC, which is a V-AFC without VTEC. Probably cheaper too
sure, i understand that. but for instance you come across a used vafc at a cheap price and your running an h23a, i'd say get it. or even if you plan to do an h22a swap in the near future. your talking about $10-15 dollar price difference between safc and vafc.
sure, i understand that. but for instance you come across a used vafc at a cheap price and your running an h23a, i'd say get it. or even if you plan to do an h22a swap in the near future. your talking about $10-15 dollar price difference between safc and vafc.
of course dude, a deal is a deal!
Charlie here's my stock H22a dyno with A/F:
Look at the A/F ratio TANK as I get into the high rpms....that's what you want to fix...and gain a bunch of power doing it
how are you guys doing your dynos? hooking a laptop to the ECU? Reason I ask is because you have a screen shot form windows rather than a print out Tunnings gonna be a bish.
Thanks for the dyno plot btw, I see what im getting after now
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-Charlie
Last edited by prelude2005; 10-15-2002 at 08:22 PM.
You get the Dynojet logs from the place you dyno at on disk, then I open them with the dynojet runviewer I downloaded off the net from dynojet. Fairly rudimentary....but I'm not expecting much from free software
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but I keep it clean
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