Tired of messing with this and just want it now JG Wentworth style.

Obd-1 D15b and P28
Have tried multiple pressure switches
Vtec solenoid works
Wiring is correct.
I have a vtec controller, I know they suck because they don't change the ecu to high cam maps
There has to be a way to signal the ecu to switch to the other timing/fuel maps.

Is it signal from the pressure switch that does it?
What actually makes the ecu switch maps?

I just want more top end and I'm at the end of my efforts.
Thanks for reading.

 

Are you saying VTEC doesn't work?

https://honda-tech.com/forums/hybrid-engine-swaps-18/%5Bfaq%5D-%22my-vtec-doesnt-work%22-1812135/

 

Thank you for the diagrams. I have correctly wired vtec, used multiple pressure switches, bypassed the pressure switch, cleaned the screen, always throwing pressure switch code.

Ecu works fine in other cars and with the oil pressure switch bypassed I'm still throwing a code.

 

Can you take pics of how and where you have it wired at the sensor and ECU?

 

Yes I'll get pics up soon.

Pin A4 is wired to vtec soleniod and pin D6 is wired to A4 to bypass vtps. Did I mess up bypassing? Should D6 be grounded instead?

 

Bummp!

 

Waiting on the pics you said you were going to put up. Shouldn't bump this until you follow through.

 

Very understandable. I would upload from FB but I'm not able to upload right now and haven't been able to all day.

Just looking for more input and wondering if pin D6 should be grounded to bypass the vtps or if it should be connected to A4?

____
l A4-------------Vtec Solenoid <How it is now
Ecu l
l D6--------------Vtec Solenoid
____

OR
_____
l A6------------Vtec Solenoid
Ecu l
l D6------------Ground
______

 

Still researching and cannot find anything about what actually signals the ecu to switch to high cam maps. Anyone?

 

How about getting us real pics? A cell phone with a camera and a Photobucket app would take you all of two minutes. If everything is wired correctly then why are you using a VTEC controller that you know is useless?

 

Not using the vtec controller. Everything was wired correctly but its all apart right now. Did have pin A4 to solenoid and pin D6 to A4.

I've tried multiple vtps with everything connected as factory would be but still throwing vtps code. Stock P28 as well.

I'm just wondering now what signal actually activates high cam maps. Not meaning to be rude but believe me. I know how to wire vtec. I've built half my engine harness including my dizzy harness, o2, blah blah. Wiring is easy, I just can't get rid of my code and have never had vtec for as long as I've had this motor, about 3 years in two different cars.

 

since no pics compare vs my chart and test continuity at the sensor and the corresponding ECU pins

 

-_- I know how to wire vtec. Please..Please..Believe me. I'm not asking how to wire it. I'm asking what signals the ecu into high cam fuel/timing maps.

Just because someone has thousands of posts doesn't mean they get to change what my thread is about. I'm fed up with everyone trying to change the subject. If I wanted to know how to wire vtec and didn't know how I'd google it, not make a thread.

I apologize but pictures won't help at all. The wiring is apart right now.

 

You were the one that said you were going to put up pics, not us.

So far you have yet to clearly explain what you are trying to accomplish, hence the misunderstanding. It makes it hard to assist you.

Wiring is correct yet wiring is all apart. Mentioned VTEC controller but are not using it. Asks about wiring and gets mad when wiring diagram is provided. Never states what the issue actually is. "Want more top end" doesn't really explain anything.

 

 

If you really want pics I'll put up pics. They're not going to help anything at all. I shouldn't have said anything about pics as that's all anyone has on their mind.

I've clearly explained what I'm asking at least three times. What signal actually activates high cam maps? If someone doesn't know, don't respond or try to add some sort of theory.

Oh you want to know what activates vtec fuel and timing maps? Well heres how to wire vtec instead. I love that most tech threads stray from the tech and more towards who was right/wrong, who said what.

The only wiring I asked about involved bypassing the vtps. Though I appreciate the effort, the wiring diagram provided doesn't help me.

And "wanting more top end" is pretty straight forward. No vtec, power just flattens out past 5500 rpm.

 

Once again, a search on Google reveals all. Many threads on the topic saying the same thing. Connect both A4 to D6 and Both wires D6 and A4 got to the VTEC solenoid.
http://www.d-series.org/forums/n00b-...ch-bypass.html

 

All right, that was how it was wired but still threw code for vtec pressure switch. I had searched many threads on the subject getting mixed info and just wanted another opinion.

Guess we just shouldn't have forums anymore? Any forum that isn't for Hondas that I've been on is always helpful. When I had my 510 and was on Ratsun dot net everyone was always down to give input and didn't act all condescending just because someone wants to learn.

I get that Hondas and their tech is very common, but if someone spends the time to open a thread and respond why not just try to help instead of look down on someone? If they're is bothered by a repetitive topic or question they always have the option to simply ignore it.

Sorry for the rant, just getting fed up with this forum quickly. I don't understand why everyone is completely ignoring my main question?

 

Run A4 back to the solenoid and run D4 straight to ground if you want to 'though you shouldn't have to if you have a working switch. The other wire on the pressure switch should be going to ground.

My guess is your pressure switch wire that ran to the ecu connector isn't fully inside the connector. This happens a lot, it happened to me. What happens is it slips back and doesn't touch the ecu. This makes you throw a code, which makes you try to bypass it instead.

This time take the back of the connector off(unplug it) and push the pin inside, then close the back of the connector.

D4 has to go to ground somehow. Normally when pressure builds up enough the switch connects and the other end that is at ground makes a connection from D4 through the switch to ground, hence it's grounded.

Why try to bypass it if you don't have to.

 

He's trying to bypass it because he SOMEHOW thinks it will SOMEHOW gain him more "top end" on an engine that will never have it. Where he got that idea, I don't have a clue.

We did try and help you but your post was all sorts of confusing and you still were not forthcoming in making them clear. HondaPartsHero is one of the most patient and forthcoming members on the forum. If you ran HIM off then you accomplished something.

And the reason people are getting short with questions that have already been answered is that these cars are 20 years old. The info is already out there. You're not trying to do anything new. Learn what? It's just a matter of searching and reading. Realize that and your troubleshooting will be more productive.

 

Thank you Holmesnmanny. I do have a less then perfect jumper harness.

And apparently what I was trying to find out is something new or at least not very common. Still, nobody knows what exact input signals high cam fuel/timing maps.

Weird you think activating vtec does nothing for top end power too. Isn't that, well, you know, what its for? Why doesn't everyone with a vtec equipped motor just unplug it then? Even when ******* around throwing it on a switch or rpm activated switch you will see gains but not like if it were running correct maps.

I've tried to be as clear as possible but Idk. I'm just going to keep all my threads in GDD from now on.