I am going to use a p28 with hondata for the h23 vtec and I dont care if the intake runners run open all the time and no knock sensor is cool.

The question is even with the p28 will I still be able to just pull the vaccum line and open them or wil the ecu have to have capabilities fo rme to open them. I other words do they need electrical and mechanical inputs to open them. If so I may have a delema.

Thanks as always guys

 

To get this confusing question straight, let me ask you one - or two. Do you think that OPEN butterfly's are better for top end or mid range? Which one are you looking for? Which might explain what you're actually trying to ask. (How do I keep them Shut/open)? Is this what you are trying to ask? -- I've done this, I have a P-28, so maybe I can help?

 

You can use the auxilliary output on your hondata to control the intake butterflies.

 

please explain. Is this something that you hardwire to the Blue box? I was under the impression that you needed an ecu that had the extra wire for the butterflys. Like the typ-r . the only way to be able to use it is to cancel out another option, like ac, and use that wire for the butterflys?

 

I just wanted to know if I was using the p28 I could just disconnect the vaccum line and run the runners open all the time.

 

you need to run a vacuum line from the diaphragm to you plenum.. theres a thread on this sumwhere.... lemme find it

 

https://honda-tech.com/zerothread?id=696382 try that

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxlr8 &raquo;</TD></TR><TR><TD CLASS="quote">please explain. Is this something that you hardwire to the Blue box? I was under the impression that you needed an ecu that had the extra wire for the butterflys. Like the typ-r . the only way to be able to use it is to cancel out another option, like ac, and use that wire for the butterflys? </TD></TR></TABLE>
There is an auxilliary output on the "s" series hondata units for activating accessories at a programmed rpm, such as a nitrous solenoid or the intake butterflies. This way you can run a p28 ecu with hondata and still control your intake butterflies.

 

Thanks that helped. I forgot about the aux output. I am just gonna run them open all the time anyway

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sharkcohen &raquo;</TD></TR><TR><TD CLASS="quote">
Yes, if there is no vacuum source the butterflies stay closed.</TD></TR></TABLE>

um my friend did this and his stay open all the time..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by h22poweredgsr &raquo;</TD></TR><TR><TD CLASS="quote">um my friend did this and his stay open all the time..</TD></TR></TABLE>
Yup, I had it backwards, appologies.