i just opened up my p28 ecu after having a mapping sesssion to find this



now can anyone tell me if this is a good or bad, ill let you in to what the tuner told me


Modified by civic j at 2:41 PM 2/25/2008

 

That looks like someone wanted the VTEC pressure switch open all the time. They jumped A26 and D6 permanently grounding/opening the VTEC pressure switch.

Have you run that ECU in your car yet?


Modified by GhostAccord at 7:48 PM 2/25/2008

 

thanks for the reply ghostaccord,
will there be any long term effects keeping the VTEC pressure switch open full time?

 

Honestly I have never seen this done before. It must be for some sort of hack or a piggy back VTEC controller. The ECU isn't supposed to see any voltage coming through from the pressure switch until after the parameters have been met for VTEC to engage and the VTEC solenoid has been opened. If it does see voltage before then it should throw a code 22.... Have you tried it in your car yet?

Some one else may have some more info on what kind of hack it is exactly. I don't see any use for it if you are going to be running a chipped ECU with a proper tune and an operational VTEC system.



Modified by GhostAccord at 3:04 PM 2/27/2008

 

yes, i have this chipped p28 in place of my original odb2b p2t ecu with a conversion harness in my ek civic,

what happened was, it was throwing a code22 (VTEC pressure switch) and this was his idea to erase code22 the result was to ground out what you see above,

i have tried it on my motor, but not for long, only becaude it was running pig rich returning poor gas mileage,

thanks GA

 

What engine are you currently running in your EK? D16Y7, D16Y8 or an H22A4 OBD1 or OBD2? I'm wondering why he didn't suggest to fix the code 22 vs doing this hack.

 

personally I'd pull that out of there. Not only for the fact that the solder joints and jumper look like crap, but simply grounding the VTEC oil pressure switch will eventually set CEL22.

the jumper should go from A4 to D6 to get rid of CEL22.
I'd do the jumper in the your conversion harness not in the ECU.

 

I asked what engine because I'm still wondering why he didn't just suggest to fix the VTEC Pressure switch.... Unless this is a non VTEC engine in that case just disable VTEC on the chip. Why even do a hack at all? Get rid of the jumper all together and fix the real problem.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GhostAccord &raquo;</TD></TR><TR><TD CLASS="quote">Get rid of the jumper all together and fix the real problem.</TD></TR></TABLE>
because some people don't believe in doing things the right way. (easier for them = better)
either that or he was planning on using the VTEC output for something else.

 

[<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GhostAccord &raquo;</TD></TR><TR><TD CLASS="quote">I asked what engine because I'm still wondering why he didn't just suggest to fix the VTEC Pressure switch.... Unless this is a non VTEC engine in that case just disable VTEC on the chip. Why even do a hack at all? Get rid of the jumper all together and fix the real problem.</TD></TR></TABLE>


i agree with him.hum?ive never seen that done before thats some hacked up sh**t there,and to be honest the solder job doesnt look all that good to start with.was the ecu chipped also?

 

im running a b16 VTEC motor, tuned on crome pro,

when it was at tune shop, cel22 was staying on and VTEC would not engage, and this was his way to get rid of the code, which imo does not look very good!

so how would i go about getting rid of the cel22, jumped from the harness a4+d6,

thanks all

 

yes zccr-xsi it is a chipped p28

 

have u cut that jumper yet??

 

this is what i saw when i lifted the lid ??!?!!!!

 

dear F'ing god. Duct tape conducts electricity.

NEVER take your car back to that person. They obviously have no clue what they are doing.

 

cut that wire!if it was me i would just desolder it.cut it as clos the the board as u can with out cutting the board.

 

i have'nt cut the jumper yet, it is still in one piece,

i just took out the chipped p28 and harness and plugged on my original p2t ecu,

another question for yall, are the atmel at29c256 chips reburnable, as my tuner also tells me that they are not reburnable and i would have to use a sst chip, he could not tune my motor using the atmel chip

this is my current ecu

 

i dont know about him but ive resued them many times.they stop making them in favor of the SST.what do u mean he cant tune it with that chip?what kinda of emulator is he using?

 

ok, you're tuner thinks that the jumper and duct tape is acceptable, and that the AT29C256 is a one time write?
man seriously, go to someone else.

who's doing the tuning so we can laugh at them...

**edit**
I had to check, at least the ECU is actually a P28. (208 on MCU = P28-G00/G50)


Modified by Relic1 at 2:07 PM 2/27/2008

 

Time to goto a tuner who can burn chips and fix the problem with your Code 22 the right way.

 

yes the 29c256 is electronically reprogrammable.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">now can anyone tell me if this is a good or bad, ill let you in to what the tuner told me</TD></TR></TABLE>
Well what did he tell you`?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Flashmn &raquo;</TD></TR><TR><TD CLASS="quote">
Well what did he tell you`?</TD></TR></TABLE>

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civic j &raquo;</TD></TR><TR><TD CLASS="quote">what happened was, it was throwing a code22 (VTEC pressure switch) and this was his idea to erase code22 the result was to ground out what you see above</TD></TR></TABLE>

His tuner told him that to ground D6 permanently would repair a DTCode 22.

 

Oh I thought there was something more sinister behind this

 

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

His tuner told him that to ground D6 permanently would repair a DTCode 22.</TD></TR></TABLE>


whos the tuner?