Quick chipping question
 

I just chipped my friend's p72 and I can't get my y7 to start on it, I was under the impression that any obd1 ecu can start any obd1 car. I put my boost chip in the p72 and I cant get my car to start with it. I also noticed my p06 has a resistor the p72 is missing and I was under the impression this resistor needed to be replaced, r54 for anyone who wants to look. The p72 doesnt even have an r54 but it does have an r52 which in my p06 came stock with a resistor but the p72 doesnt have one. It wont even start so maybe it's not reading the chip and throwing it into limp mode which isnt going to happen with a stock 240cc map on 450's in my car. Anybody who chipped their own GSR could chime in and tell me what resistors they added, maybe I'll figure it out after I stare at the board a little, oh well. I guess my question is, does the resistor even do that much and should I install the resistor that comes with the kit in r52 because the p72 doesnt have an r54?

Re: Quick chipping question
 

Id ask Chris.

Re: Quick chipping question
 

I have a friend that could help me but he's not answering his phone. I'm getting a solid cel when I turn the key to on so I guess it just cant read the chip, because I know the chip is good, and I know my jumper is connected which tell it to read the chip so the solders on the connector for the chip must be bad I guess, they look good though.

Re: Quick chipping question
 

When I disconnect the jumper it still has a solid cel? A stock GSR ecu should at least try to start my car shouldnt it? wtf

Re: Quick chipping question
 

There is no R54 on P75/72.

Either your chip is crap, or your socketing is crap.

Have you ever heard of pgmfi.org's Wiki? Why ask a bunch of brokedick ----------ers in HMT GD Forum, when you can to di-rectally to the font of all knowledge?

Re: Quick chipping question
 

pgmfi.org doesnt respond as fast as HMT, I know my chip is good, it works on my other chipped ecu. My soldering job looks good and I have chipped a bunch of ecu's before but I guess I could have screwed something up. So do I put the resistor that cam with the kit in R52 or do I just not use it? And I also cant figure out why I have a solid cel with the jumper disconnected.

Re: Quick chipping question
 

well you have bigger problems if j1 isnt connected and there is a solid ecu code. I have chipped a few p72 and like jd said there is no r54 so dont even worry about it.

Re: Quick chipping question
 

What the ---- are you talking about? I gave you a direct link to a refined, at your fingertips, pgmfi.org resource. NOT pgmfi.org forums, which don't need a pollution of their signal:noise ratio.

Re: Quick chipping question
 

JD, chill out, I've looked at the wiki before, it cant help me right now. I probably just need someone to look at my soldering job and be like look at this, if thats the case I will. Honestly I have no idea whats wrong right now, when I get my friends GSR back and can start troubleshooting with that we'll see what happens. In the meantime I'll get rid of that resistor, hook j1 back up and hope for the best. I've soldered and resoldered a bunch of connections and it still does nothing, I dont know how I could have screwed up the whole ecu though, oh well, we'll see.

Re: Quick chipping question
 

j1 cut has nothin to do with the chipping if it still has the solid cel.

Re: Quick chipping question
 

I know, that has me a little concerned, would the GSR ecu throw a cel before even trying to start my turbo y7 though?

Re: Quick chipping question
 

it might be because the chip you have is used in a p06, wouldn't you have to import the tune to make it work in a p72?

Re: Quick chipping question
 

Is that true? I didnt think uber cared what kind of ecu it was going in.

Re: Quick chipping question
 

i'm pretty sure that if you wanted to use the chip in a p72 for a sohc then you would go into uber, and import those settings, i'm not 100% positive though, maybe someone else can chime in with a bit more knowledge than myself

Re: Quick chipping question
 

i think this might be why the p28 is the ----- of choice for chipping obd-1 motors..

i've looked at the goods in my chipped p28 and compared it with my stock p72. there's a lot of differences. you might have another couple pins to connect or even disconnect to make it work.

Re: Quick chipping question
 

the resistor thing was the only difference I noticed in my p06, when I get a hold of my friend and put it in his car we'll get to the bottom of this.

Re: Quick chipping question
 

p72 equals easy to chip. The fact that it throws a solid cel before j1 is even jumped makes the fact that the problem is outside of the eprom section

Re: Quick chipping question
 

solid cel = ecu is fucked if your jumper is cut. when jumper is cut it should revert back to stock.

Re: Quick chipping question
 

nonvaginatech, I will not chill out. You failed to educate yourself about the hardware you are dealing with as your first step in the chipping process. Strike one. You keep making errors in education like that and strike three is going to be your motor. Maybe it's what you need to go through to learn, but I'm a devout believer in yelling at people to get their attention. Do I have yours?

90boostdaccord, OBD1 Civic/Integra ECU is OBD1 Civic/Integra ECU, the code is modular and interchangeable, except that P07 dual MCU garbage. Pointy-clicky in your ROM editor of choice to disable whatever hardware your ECU doesn't have installed and go.

If the ECU ran fine before chipping, and now does not even with J1 cut then you have a solder bridge on the topside of the ECU board where you can't see it. Pop the board out of the metal case and look closely with a magnifying glass at both socket and the optical latch. You might have to remove the parts to see anything - this is why Joey buys machined pin sockets that stand up off the board so you can see under them.

Re: Quick chipping question
 

I know it's not going to start anyway with the jumper cut because I am running 450's on a sohc, a stock GSR map will not start my car, I know this. No one's motor is going to be blowing up, I know what I'm doing for the most part and just had never done a p72 before. Yes JD you have my attention, ok I will take it out and look at it with a magnifying glass like you said, thank you for the help.

Re: Quick chipping question
 

sure it will. i managed to drive my GSR on stock p72 w/ 460's home from school and around the block a few times..

Re: Quick chipping question
 

Lemme guess, bogged like a sumbitch around 3000 rpms, and you killed the sparkplugs? Also not good for the rings/bores, but do-able to move the car in a pinch.

Re: Quick chipping question
 

Alright I got it to start with the jumper pulled but, it's rough, and it floods and dies and then I clear flood it with the pedal floored and it will start again, but its ugly, which I predicted, now onto fixing my chipping solder job I guess.

Re: Quick chipping question
 

jumper in it floods which I'm thinking is limp mode so I just need to figure out why it's not reading the chip >:(

Re: Quick chipping question
 

there was a red light near the top of a hill i hit. turns green and PUTTPUTTPUTTduhhh... car bogs to a death, and took a minute to start back up. there was a nice cloud of smoke once it did though. and im sure i scared the hell out of the soccer mom behind me, she was probably thinking my car was gonna blow the ---- up :8

Re: Quick chipping question
 

Plugged it into the GSR today and it runs like butter, dont know why it didnt like my car, oh well. :8

Re: Quick chipping question
 

Stock map with your 450s?


JP

Re: Quick chipping question
 

SO JUMPER in or what and the 10k ohm resistor what to do with that