Is it worth it?????

[B16EJ1]

Originally posted by edman24
not to be mean or anything but youre all wrong. a vtec controller does not add any hp in an untuned motor and will not help in a chipped ecu situation either. the point of the vtec controler is to change the vtec crossover point. now certain cams are built to have the changeover at certain rpm's. the stock cams work the best with the stock crossover. raising it or lowering the crossover would cause lost hp. but if you get higher lift cams that are made to work at higher rpm then by all means get the controller and set the vtec crossover higher then the factory setting. but then again it all depends on the cam. not the ecu.

hope this helped

I know this is an old thread but I missed this. You are wrong. With most chipped ecu's the fuell map is changed and the crossover point is pushed forward. Have you ever tried to pass emissions with a chipped ecu......not possible and for you people who don't need emissions just disregard. You are correct about aftermarket cams and the crossover but with the VAFC you can richen or lean out the maps. My ecu ran rich as hell and also pushed up the crossover so what did I use to fix it...................................VAFC

[SleeperCivic]

I use the VAFC on my car and I noticed a very dramatic increase in power by being able to tune my fuel map and I get much better gas mileage than I did with the Greddy "blue box" EMU, which everyone already knows has an ultra-rich fuel map. I normally run 8psi at the track, any higher gives me traction issues with my 13" steelies.

[B16EJ1]

There you go. Proof that it helps in a chipped ecu.

[edman24]

youre supposed proof only proves me right. he has a turbocharged motor. i said that the vafc doesnt do anything in untuned motors. obviously his motor is tuned. and also about chipping your ecu it depends on the program. different chips make different changes and if i were to chip my untuned motor it would only have a slightly richer fuel map at most without changing the crossover. changing the crossover without changing the cam is stupid and pointless. but if thats what you did then thats your problem. what i said was accurate in the event that you actually know how to properly tune your engine to its capabilities. making specific situations that directly negate what i say is not how to prove me wrong. do some actual research instead of coming up with your own uneducated theories.

everyone else on here said that it only works with the right mods which basically agrees with what i said. so there YOU go. proof that it doesnt help in an UNTUNED or IMPROPERLY tuned motor

[SleeperCivic]

I agree. I think the VAFC would be useless on an otherwise stock motor.

[B16EJ1]

Maybe you didn't read my post. The chip changes the fuel maps and pushes the vtec crossover. Mugen,Spoon, and Skunk2 chips all do it. Oh and he also said that the Greddy blue box richened his fuel so he used the VAFC ti fix that, exactly what I was talking about. Oh and when I said that I fixed my crossover, I meant I pushed it back to the factory setting. So explain again how it doesn't help chipped motors cause I don't see your point.

[SleeperCivic]

Okay, I want to point some things out on this post:

1. My motor is NOT tuned. I've got a turbo kit (small one, too), FMIC, and boost controller. I've never been on a dyno or have a wideband O2 sensor. My VAFC settings came from a friend.

2. Why would you swap in an ECU mod chip when your motor is stock?? You're not getting any extra air flow with the stock cam/head/intake/exhaust, or whatever. It's useless.

3. Why would you get a VAFC to correct the fuel map of a chipped ECU? That's why you bought it. That sound like someone buying a VAFC and injectors, then trying to control the fuel supply with a FPR. Why would you do that when the VAFC does it for you??

I see a lot of people spending good money on shit they don't need and end up losing money and performance for it in the long run just so they can say they have it.

[SleeperCivic]

Originally posted by B16EJ1
he also said that the Greddy blue box richened his fuel so he used the VAFC ti fix that

I completely got rid of the blue box and upgraded to bigger injectors and the VAFC. Due to the rich fuel map of the blue box, I get better gas mileage with the larger RC 440cc injectors and VAFC by being able to control my fuel map under normal and hard throttle.

[B16EJ1]

Okay buddy all your questions are because you have no idea what a chipped ecu does. If they didn't do anything no one would buy them. The chip does not put out it's max potential unless you tune it.They're rated at 10-15 tuned. It does alot more than change fuel maps and change crossover. Turn your fuel map up and run it rich for a while and let's see how much carbon deposit builds up in your motor. Oh and why the heck would you use a friends setting unless you guys have the exact same setup?

[SleeperCivic]

Okay, you're definitely missing the point and trying to talk some shit at the same time.

ECU Chip on a stock motor: Fuckin stupid. Why increase the fuel map to run really rich when you have nothing to supply extra airflow (such as a cam)l??? Again, fucking stupid. Yeah, you can tune it, but with minimal airflow, you'll be tuning it back close to the stock fuel map.

VAFC Settings: Yes, my friend has the same setup. I'm NOT fucking stupid.

I hope that took care of any issues that you think I have a problem with.

[SleeperCivic]

Originally posted by B16EJ1
Turn your fuel map up and run it rich for a while and let's see how much carbon deposit builds up in your motor.

And why in the HELL would I want to do that?? That's fucking stupid, too.....

[SleeperCivic]

Check this note out on www.hondaecu.com:

Note: This will only work for USDM ECUs only.
This program still controls the secondary runners on the stock manifold for both the Prelude and GSR. Recommeded for Bigger cam and Higher compression pistons

or one of these:

Note: One of the strongest non-VTEC programs. Runs rich but give good gains.

Note: Good gain but doesn't runs as rich as the skunk2 Specs. Great for Stock to Mildly modified Non-vtec motors.

Note: Good gain but doesn't runs as rich as the skunk2 Specs. Great for Stock to mildly modified Non-vtec motors.

How many times do you see "runs rich" or "modified" in these??

[SleeperCivic]

And why spend the money on the ECU chip and THEN buy a VAFC to correct the fuel map???? That's REALLY fuckin stupid! You could have just bought the VAFC and injectors and had the same tuning options with your chip (except the rev limit). Yeah, you would have paid more, but if you keep modifiying your motor, you'll have to make those upgrades later anyway.

[edman24]

see b16ej1. you must not know that much about tuning and to come on here argueing with someone who actually knows what theyre talking about is even more stupid. go run your little stock car, with its rich fuel map and blow fuel out the exhaust for all i care. sleeper just gave you a mouthful and proved my points exactly.

good job sleeper. nice to see someone knows what theyre talking about. we should do this more often

[B16EJ1]

What the hell are you babbling about? Your own link says what I've been saying. You know what's fuckin stupid? Posting a link to prove MY POINT!!!!!

Note:Most 89-95 ECUs can be programmed to run either SOHC or DOHC VTEC motors. 92-5 OBDI ECUs will work on OBDII (96-00/01) Civics and Integras but will require an ECU harness converter. Most harness convertors cost about $200-$250 from most online performance shops. A VTEC/Fuel Controller, Adjustable cam gears and Adjustable fuel pressure regulators are not required but will greatly improve the flexiability in tunning and increase the potiential for power gains.

Note: The most gains across the whole power band. This program is probably one of the best P28 programs.


But yeah you're right chips do nothing and you don't need a VAFC to tune your chipped ecu.