p28 question - Tuner-Junction

Johnlude85 · #1 (**permalink**) March 31st, 2006, 02:23 PM

wow...so this is what the inside of the civic section looks like *takes a good look at his surrounding*...lol ive never ben in here.

aaaaanywayyyyy...i just got a p28 from phearable for my h22 prelude and i figured id ask you guys. are the ecu pinouts for the p13's and p28's the same? i believe all honda obd1 ecus are the same i just wanna make sure because i have a ground that is disconnected from the p13 ecu because when it was hooked up, all hell broke loose because the ecu was bad. i just dont wanna fry anything, i have the p13 pinout infront of me as i type this, so all i need is a quick answer and then the mods can delete if they so wish.

thanks guys.

fwdtamiya · #2 (**permalink**) April 3rd, 2006, 08:08 PM

I have no idea, but i read somewhere you lose 2nd butterfly control with the P28?

I don't mean to spread false information, i just read that somewhere recently.

yardy8301 · #3 (**permalink**) April 3rd, 2006, 08:11 PM

yes they are the same. most honda obd1 are the same except for 94-97 accord where they switch 2 pins around.

yes you do lose the secondaries too because the p28 cannot control them.

Johnlude85 · #4 (**permalink**) April 3rd, 2006, 08:25 PM

Quote:

Originally Posted by yardy8301

yes they are the same. most honda obd1 are the same except for 94-97 accord where they switch 2 pins around.

yes you do lose the secondaries too because the p28 cannot control them.

yeah, i finally realized that they are the same pinout. thanks man. i know that i lost the iab's but trust me...the way this ecu is, it picks up other things because of losing the iab's

. its all installed and working and all...it has ben for 3 days or so now.

mods can delete this thread if they want, i just needed a quick answer thats all.

DCxMagus · #5 (**permalink**) April 15th, 2006, 06:10 PM

you can modify a P28 to control IAB's I though phearable did that for you john.

Johnlude85 · #6 (**permalink**) April 15th, 2006, 08:28 PM

Quote:

Originally Posted by DCxMagus

you can modify a P28 to control IAB's I though phearable did that for you john.

nope, john told me that he doeent. it doesent matter anyway. the difference is SOOOOO minimal, its really no big deal. my arent working anyway, the vacuum box under the manifold has a broken sensor and that sensor is a dealer only part which is almost $100 my itself. so i see it as me saving 100 bucks.

njn63 · #7 (**permalink**) April 16th, 2006, 02:01 AM

was your p28 just chipped or chipped/socketed? I emailed him before he did my p28 and he said he socketed them and just looking mine over it doesn't seem like that chip is coming out.

Ugh, i've had soo many problems with my obd1 conversion in the past week, i'm debating doing it anymore.

Blake · #8 (**permalink**) April 16th, 2006, 04:11 AM

Quote:

Originally Posted by njn63

was your p28 just chipped or chipped/socketed? I emailed him before he did my p28 and he said he socketed them and just looking mine over it doesn't seem like that chip is coming out.

Ugh, i've had soo many problems with my obd1 conversion in the past week, i'm debating doing it anymore.

wussy.

john sockets and chips all his ecu's.

njn63 · #9 (**permalink**) April 16th, 2006, 04:19 AM

Quote:

Originally Posted by Blake

wussy.

john sockets and chips all his ecu's.

ah, i'm just too scared to pull on it i guess.

I'll take it back apart and look at it again later. I was hoping it was socketed though because that was one of the main reasons i did it.

edit: Thanks. Just pulled it out. Now i just have 5 other problems that i hope are rectified as easily.

Blake · #10 (**permalink**) April 16th, 2006, 03:40 PM

a pick is a good investment for getting them out. I dont even run chips anymore. I just leave the ostrich hooked up and all times.

another good thing to get is the zif socket. Its got a lever that releases and secures the chip in place. However, i had problems with mine coming loose so i just took it out.

njn63 · #11 (**permalink**) April 16th, 2006, 06:57 PM

yeah, i'm used to seeing zif sockets i guess because i was looking at the chip when i first got it and didn't understand how it came out.

I'm probably going to get a ostrich when i start actually doing tuning. I needed my p28 auto -> manual converted and figured since phearable did it for free i just had them do it. It wasn't worth me trying to do the soldering work and hoping it worked... plus i got my p28 for $50 at a junkyard so i have $125 in a manual/socketed/chipped one. Not that bad.