I have a '95 Civic EX (D16Z6). My friend told me to put a GSR (P72) ECU in there instead of the stock P28 ECU (but to leave the P72 stock, not to chip it).

I'm not sure if it's ODB 1 or ODB2 (the car I mean, the ECU I know is ODB2), I believe it's ODB2 because I think my probe's ODB2 and that's a '94...

Would the P72 GSR computer work with my setup? (work correctly with my setup I mean, like pass emissions and stuff...) If so, could I expect some power increases? If anybody has any info on this plz share.


Thanks in advance

-Greg


PS: I'd be so happy if I could finally get this ECU squared away....and you'd all be happy for me not posting topics about it anymore O.O

 

bump b4 I go to school

 

ANYTHING FROM HONDA PRE 96 IS OBD 1 THAT MEANS ANYTHING MADE BEFORE 96. IF THE ECU FROM THE GSR IS AN OBD 1 THEN IT WILL PLUG IN TO THE WIRING HARNESS.

BUT BACK WHEN I DID MY MINI SWAP I HAD A CHIPPED P28 AND WE PUT IT IN MY BUDDYS GSR IT WORKED BUT I DON'T THINK IT WAS SMART TO DO.

BUT IF U USE THE GSR ECU I'M NOT SURE IF IT WILL HELP U OUT OR NOT.

GOOD LUCK.

 

a p72 has the right fuel/ignition maps for a B18 only. It probably would run your z6, but not as well as your p28 does. if you need a new ecu, get another p28.

 

tell your friend to stop giving advice. get a p28 or a p08. p72 will not run right, they are WAY different Base maps. Way different

 

p72 has a knock senor and iab's the car will run on it, but with check engine lights and most likely run like a POS

tell your friend to put a sock in it

 

VERY TRUE, AS SAID ABOVE AND USE THE P28 IF U LOOKING FOR MORE POWER CHIP THE P28.

 

well....whichever ecu you use....sell the the remaining one..

 

I dont' think I can sell it, I wanna keep it in case the other one starts tripping on me...

would the fact I'll be running larger injectors (440's or 500's) change the fact that the GSR would totally blow in my car?

How well would the P08 work oppose to my stock P28, it's not that the P28's bad, I just want to upp the power of it a bit w/o completely crushing the mpg - I know that's the big battle that's like a 3rd rail of systems, but I'm trying to squeeze more hp out of it without really nailing the mpg down...

What would be the smartest move? I'm afraid fo chipping the P28 because I feel it'll make it run rich which will
A. might trip the check engine light because of the O2 sensor
B. waste gas (if it's running rich that is)

So would it be better to chip the P28, I never thought of a P08 and not sure if that would change things any? Or are there any other suggestions?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">would the fact I'll be running larger injectors (440's or 500's) change the fact that the GSR would totally blow in my car?
</TD></TR></TABLE>

Why would you run those size injectors? are you going turbo?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">What would be the smartest move? I'm afraid fo chipping the P28 because I feel it'll make it run rich which will
A. might trip the check engine light because of the O2 sensor
B. waste gas (if it's running rich that is)
</TD></TR></TABLE>

why would you need a chipped p28? a virgin p28 is fine.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">I have a '95 Civic EX (D16Z6).

I'm not sure if it's ODB 1 or ODB2 (the car I mean, the ECU I know is ODB2), I believe it's ODB2 because I think my probe's ODB2 and that's a '94...
</TD></TR></TABLE>

a 95 civic is obd1. 96+ is obd2

 

no stock honda ecu will run your car properly with those big *** injectors.

I don't understand why you would want to change the ecu, please share why. If you have a stock motor there is no need.

 

if I was goign turbo I'd go 1000CC, in the meanwhile, I want a chipped one or to change it because I want a little more pep out of it. I'm not tuning it for a drag and I'm not trying to make it an ultimate racing machine....just trying to get a little more pep out of it w/o crushing mpg, I dont' see any other inexpensive ways to do it other than that?

And for those of you who are about to bitch: "wants the power but nobody wants to spend the money"

It's not like i wanna make it do 180, I just want a little more pep out of the stock motor as it is, I only have an exhaust (axle back), intake, and bigger injectors (which aren't even in the car yet)... So I'm not trying to rice it, ur not gonna see it with wal*mart upgrades and bling, I just want a lil more pep out of it, if I wanted to put money in it I'd simply put 1000CC injectors, 4 stage intercooler, T3/T4 turbo, and the whole 9 yeards, but I'm not.....

 

Any help on any other suggestions about what I could do to it would be nice... I realize i could put headers on it but I don't wanna crush the sound Asside from that I don't really see anything else..I'm always open to suggestions though..

 

I've got a chip for a p28 for sale if you are interested. If you keep the stock injectors that would be the way to go.

 

I'm not going to keep the stock injectors, which way should I go then?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">I'm not going to keep the stock injectors, which way should I go then?</TD></TR></TABLE>

unless you are changing motor internals or going FI, bigger injectors will only make you slower.

 

why would they make it go slower?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">why would they make it go slower?</TD></TR></TABLE>
because you do not need more fuel, at all. It may not make you slower, but it sure as hell isn't going to make you faster. You will need some type of chip or fuel controller if you put bigger injectors in no matter if you use the p28 or p72. Your stock injectors are more than capable of the fuel output that you need.

Keep the stock injectors

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Syndacate &raquo;</TD></TR><TR><TD CLASS="quote">I just want a little more pep out of the stock motor as it is, I only have an exhaust (axle back), intake, and bigger injectors (which aren't even in the car yet)... </TD></TR></TABLE>
Stick with the stock injectors, chip you're stock ECU and tune the car. You will get that little bit of pep you want.

and please please stop saying you'd use 1000cc injectors, it's makes you sound stupid. 1000cc injectors on anything sub 500hp is worthless and only makes tuning it a royal PITA. And for absolutely no reason other than to make it seem like you have the nuts to use them.

Larger injectors on an untuned ECU will make the car run drastically slower because the ECU still thinks it has the stock sized injectors, so it pulses the injectors at the rate that the stock injectors take to put in the right amount of fuel. Only problem is that you've now installed higher flow injectors.... so the larger injectors will only put in more fuel, which will make you run pig rich all the time and possibly not run at all.
All though properly tuning the car changes everything. BUT the stock 240cc injectors that honda uses are good for 200hp as is. So unless you're going above that stick your money in tuning.

(sorry if this seems like I'm bitching, I'm not having a good day...)

 

^^ indeed keep the stock ones, plus the only reason ppl upgrade injectors is for building their motors for more power not pep.

if it's a stock motor just run a chipped p28 you will be happy i was with my mini-me a while back.

anyhow good luck.

 

think of it this way... a completely stock type r only runs 240cc injectors... i would even say stay away from chipping your p28 unless you've got plans to add other things... depending on what you mean by chipping, if you're referring to the various $3 chips that you can get from any internet site, all they'll do is add wads of timing and throw in a whole lot of fuel.

 

btw the reason why I used 1000CC as an example is because i know that's what my boss put in a project civic he's building, but he has a laptop in the car (mounted on dash) for real time tuning and fuel management

So I have the potential to keep the 240CC injectors, so then I should chip the ECU? Or what should I do then instead for a little more pep?

Right now I'm trying to stay completely NA, so if anybody has anything I can add to the engine to kick up the power a bit, lemme know plz. And would it be worth it to chip the ECU? Will it run overly rich?

 

*bump

 

The ecu wont' run overly rich with a decent basemap on it. If you want more power, chipping the ecu isn't the first place to start really. But it will give you a little more pep after tuning. Just slapping a chip in there isn't the best option.

 

you need to do a lot of reading, you got 238 post and you dont know **** about ecu's
if you put a p72 in your single vtec and your **** is gonna dump hella fuel ask your "boss" if he has all that **** in his car and has RTP he should be the guy you could ask!
p.s chip the p28,prep it for datalogging and gets some dyno time to get powa out of your motor!