i was looking up some old threads and noticed that a user on here, had a chipped p28 on his h22....since secondaries were eliminated, he connected them to his vtec solenoid and he said that it gave him good power throughout the lower to midrange area....

i have the write-up, what im wondering is if i can do that with a p13 ecu?

 

You could do that if you wanted.....but why rig it up if you have the p13 already?

 

does anyone know how to make the P28 work with secondary butterflies, there was something on here about what you could do but i forgot and now i cant find it

 

i want to do it because it gives you good lowend torque....the guy had it on his h22 and he said he had about 158 ft/lb of toruqe at 3200 RPM...i think if you search "p28 h22" on the archived documents, you should see it...its part of a thread

 

An unmodified P28 doesn't control IABs, thus the reason to hook them up to VTEC, or an RPM switch, or whatever.

A P13 does control them though, given it is the stock H22A1 ECU and all.

 

A p28 can't control the iab's but if you're using something like hondata to tune, you can use the nitrous control feature to control the iab's. To the OP, your p13 is already optimally controlling the iab's..leave it alone.

 

I think he wants to know how he can run them open all the time with his p13.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Revi &raquo;</TD></TR><TR><TD CLASS="quote">I think he wants to know how he can run them open all the time with his p13.</TD></TR></TABLE>

this is exactly what i wnat to know....the guy posted the write-up, but i dont even want to experiment with it...if i know that its not going to work with the p13

 

Well i think if you were to re-wire them somehow to run open all the time with your p13 you will throw cels like crazy. Im not 100% sure but with a chipped ecu, like Hondata, you would be able to control them. I dont believe how ever that there is a chip available for the p13. Your better off running Hondata on a p72 and you would have control of your iab's.

 

If you want them open all the time just unplug and cap the vaccum line from the manifold to the IAB control widget/solenoid thingy. That will keep them open all the time - not good for low end power, but I wouldn't worry about it too much.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by A Blue Lude &raquo;</TD></TR><TR><TD CLASS="quote">If you want them open all the time just unplug and cap the vaccum line from the manifold to the IAB control widget/solenoid thingy. That will keep them open all the time - not good for low end power, but I wouldn't worry about it too much.</TD></TR></TABLE>

Wouldn't this cause a cel though?

 

doesn't cause a cel with mine but it killed my lowend torque, maneouvering around carparks isn't as easy because the engine starts to stutter like its going to stall a lot earlier than it used to but i've got a p28 s300 so i have to live with it for a while

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by pizzamanprelude &raquo;</TD></TR><TR><TD CLASS="quote">doesn't cause a cel with mine but it killed my lowend torque, maneouvering around carparks isn't as easy because the engine starts to stutter like its going to stall a lot earlier than it used to but i've got a p28 s300 so i have to live with it for a while</TD></TR></TABLE>

It didnt cause a cel on your p28 or stock ECU? I dont think it would throw a cel with the p28 because its not even looking for the iab.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Revi &raquo;</TD></TR><TR><TD CLASS="quote">Wouldn't this cause a cel though? </TD></TR></TABLE>

I'd be quite suprised if it did. You're not pulling out any electrical bits and pieces, even if the ECU was programmed to care about the IABs.

 

it didn't cause a CEL with either, i pulled the vac line off the IAB diaphram before i got the p28.

 

QUOTE: Originally posted by ExplicitSpeed360

I had time so I made the drawing below on how to hook your Secondaires (IAB's) to vtec. Good for P28 H22A peeps.



Most H22's have a solenoid on the fuel rail or a emissions solenoid will work also as long as it has a 2 wire common round plug outlet and 2 vacuum nipples.

(Yellow Line) shows the Upper Vacuum line from the nipple of the solenoid to the air boost valve on the end of the intake plenum that actuates the secondaries.

(Blue Line) shows the Lower Vacuum line from the 2nd nipple of the solenoid to a nipple on the end of the intake manifold above the air boost valve. The vacuum line as has a check valve in it. This is where the air comes from I believe and the check valve releases it I believe at the certain point/signal.

(Blue Circle) shows the check valve inbetween the vaccum line going from the end of the intake manifold plenum to the bottom (2nd) nipple of the solenoid.

(Red Circle) is the plug outlet for a round common 2 wire Honda plug.
2 wires will be coming out of the plug.

(Pink Line) is a ground from 1 of the 2 wires on the solenoid plug circled in Red. Use a simple fish eye connector and ground it to the mounting bolt for the solenoid bracket.

(Black Circle) is the ground mounting point and a good place to mount the solenoid if you don't have the bracket I have that came from the engine.

(Green Line) is the wire that will be spliced into the Vtec Solenoid 1 wire setup you can use a special 3 way connector or do like what I did and soder it in. Make sure you use enough soder to make a solid connection. Use shrink wrap if you soder to protect against weather. This will complete the circuit so when Vtec signal is sent from the ecu or vafc it will also actuate Vtec and your Secondaries (IAB's) at the same time.

The outcome is if you priorly had Secondaries (IAB's) opened all the time before (not hooked up) you will gain bottom end torque and max torque will be at a lower RPM. This is good for performance and overall daily driver and mild to stock setups...better gas mileage I would think and getting up those hills will be much easier and no more bogging issues. I prefer the Secondaries hooked up this way it's a nice feeling in my car atleast it puts ya in the seat a lil more especially when it's in my CRX a 2200 lb car with me in it.

Outcome was 158 ft lbs of torque @ a low RPM of 3200 on a stock internal massaged jdm H22a.


This should explain more what im talking about....its teh actual write-up, that prompted me to ask this question

 

edit*

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B.Rabbit &raquo;</TD></TR><TR><TD CLASS="quote">edit*</TD></TR></TABLE>

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