vtec controller - Honda Prelude Forum

93hallsballs · 07-05-2008, 08:13 PM

i was searching other threads and i didn't really come up with an answer. my sisters boyfriend told me i should get a vtec controller. is this true?

spin_r_g · 07-05-2008, 08:22 PM

Did he tell you why?

You don't really need one.

93hallsballs · 07-05-2008, 08:39 PM

so i could engage vtec sooner

spin_r_g · 07-05-2008, 09:10 PM

Engaging vtec earlier isn't going to yield you anymore power without a correct tune as the fuel maps aren't going to be adjusted with it.

93hallsballs · 07-05-2008, 09:16 PM

o what is the best thing to do?

Qveon · 07-05-2008, 09:44 PM

Quote:

Originally Posted by 93hallsballs

o what is the best thing to do?

Have a chipped ECU tuned for what you want

93hallsballs · 07-05-2008, 09:54 PM

well when i got the car the ecu was aleady remapped ecu with removed knock sensor and improved engine potential. he said that when vtec kicks in now it is a lot smoother transition and has the full potential to redline at 8000

rayslude · 07-06-2008, 07:49 AM

hondata/neptune in a p28 or p72. go get a tune...done.

petern101 · 07-06-2008, 01:39 PM

Quote:

Originally Posted by 93hallsballs

well when i got the car the ecu was aleady remapped ecu with removed knock sensor and improved engine potential. he said that when vtec kicks in now it is a lot smoother transition and has the full potential to redline at 8000

well he's lying to you since vtec controllers don't normally adjust redline (which is 7600 rpm's btw)

If he already had a remapped ecu, he should have gotten that tuned instead of buying another vtec controller

Qveon · 07-06-2008, 03:25 PM

Quote:

Originally Posted by 93hallsballs

well when i got the car the ecu was aleady remapped ecu with removed knock sensor and improved engine potential. he said that when vtec kicks in now it is a lot smoother transition and has the full potential to redline at 8000

Just go call your sisters boyfriend a ricer. Cause vtec controller is rice parts and you dont need it if you have a chipped ecu

el_baby · 07-06-2008, 03:55 PM

If I have a H23 and make it hybrid with a h22... to activate the vtec, I could use a controller or I need to buy the ecu?

Qveon · 07-06-2008, 04:06 PM

Quote:

Originally Posted by el_baby

If I have a H23 and make it hybrid with a h22... to activate the vtec, I could use a controller or I need to buy the ecu?

Let me ask you, which do you think will work better? What do you trust your $2000 engine to?

rayslude · 07-06-2008, 05:48 PM

Quote:

Originally Posted by el_baby

If I have a H23 and make it hybrid with a h22... to activate the vtec, I could use a controller or I need to buy the ecu?

Usually when you buy a motor, it'll come with the P13 ECU which is what activates VTEC. With that said, you need to remove the oil plug from your h23 block and add 2 or 3 more wires for vtec and its done.

el_baby · 07-06-2008, 09:53 PM

Quote:

Originally Posted by Qveon

Let me ask you, which do you think will work better? What do you trust your $2000 engine to?

Sounds like the ecu...

but if i the ecu is chipped it will be about the same or not?

petern101 · 07-07-2008, 12:07 AM

Quote:

Originally Posted by el_baby

Sounds like the ecu...

but if i the ecu is chipped it will be about the same or not?

You need more info on the ECU. Being chipped is one thing, what program is it running? What are the limits set at? Etc.

Seems like you need to take it to someone knowledgeable because there is only so much we can do w/o physically being near your car.

el_baby · 07-07-2008, 09:06 AM

Quote:

Originally Posted by petern101

You need more info on the ECU. Being chipped is one thing, what program is it running? What are the limits set at? Etc.

Seems like you need to take it to someone knowledgeable because there is only so much we can do w/o physically being near your car.

I'm just asking, using the topic to clear some doubts that I have and maybe other people could have.

I heard that making it hybrid, will have more compression, that I could activate the vtec with a buttom...

Thats why I ask, but I'm not doing it yet.

Thanks...

petern101 · 07-07-2008, 12:16 PM

Quote:

Originally Posted by el_baby

I'm just asking, using the topic to clear some doubts that I have and maybe other people could have.

I heard that making it hybrid, will have more compression, that I could activate the vtec with a buttom...

Thats why I ask, but I'm not doing it yet.

Thanks...

1. making a hybrid h23 vtec is a decently involved process. I don't know about the increased compression but what I do know is you don't activate it with a "button"

2. From reading of your knowledge of hybrid h23 vtec's and the vtec mechanism in general, I would seriously advise you not to attempt this yourself or do alot more research or find someone who has done it before locally and ask him to help.

Qveon · 07-07-2008, 02:50 PM

Quote:

Originally Posted by el_baby

Sounds like the ecu...

but if i the ecu is chipped it will be about the same or not?

No...you can buy "ebay" preprogrammed chips or some of us can write our own chips to do whatever we want.

I.E: I wrote mine for Vtec, Boost and to run on ethanol.

93hallsballs · 07-07-2008, 04:09 PM

i found out that the guy who had the lude before me sent the ecu down to florida and a guy who has the same jdm h22a engine already had a dyno tuned ecu he just loaded the same one on mine

petern101 · 07-07-2008, 04:22 PM

Quote:

Originally Posted by 93hallsballs

i found out that the guy who had the lude before me sent the ecu down to florida and a guy who has the same jdm h22a engine already had a dyno tuned ecu he just loaded the same one on mine

Same engines (even with the same mods) might not react the same way.

You should always tune your ecu with your car.

el_baby · 07-07-2008, 05:04 PM

Quote:

Originally Posted by Qveon

No...you can buy "ebay" preprogrammed chips or some of us can write our own chips to do whatever we want.

I.E: I wrote mine for Vtec, Boost and to run on ethanol.

Thats what I thought.. ecu have more "features" to control than just controling the vtec.

Qveon · 07-07-2008, 05:32 PM

Quote:

Originally Posted by el_baby

Thats what I thought.. ecu have more "features" to control than just controling the vtec.

Yes because like stated above, if you move Vtec down, your stock ecu's map is not tuned for high-pro cam at 4500. You will just make the problem worse.