Quick ? about PG7 ECU

I somehow found this when I was cleaning out my basement. I think it was my buddies cause it was still wraped up in bubble wrap and he bought one awhile back using my pc in my house so it got shipped to me I guess. Anyways, he has no use for it anymore. I heard before that people switch these ecu's with their stock D16A6 PM6 ecu. I have a d16a6 and a PM6 ecu. But I also heard that they can cause fuel flooding if you don't have enough mods. I have a exhaust(hollow cat. convert) and a intake and a few little things like spark plugs etc....Will this PG7 make any real difference if I put it in my crx? It's from a 89 integra i believe.

put it in and try it.......then let us know :D

Lol, yeah but I dont want to put it in if it will mess everything up. Cause isn't it from the 88-89 DOHC Tegs? Just that I read on crxsi.com that people said puttin it in your d16a6 will have more aggressive fuel cruves but can also be bad if you do not have enough air for it. So like I have a intake/exhaust and a few other small things. Just wondering if anyone has tried it?

it definitely will run rich..no doubt about it. it runs rich in the zc as well...but people still do it..

well rich is always safer than lean.

^Thats right. But the PM6 doesnt really run the car lean.I say just run it and see what you think. If you dont notice anything beneficial, stick with the PM6. It wont screw anything up.

rich also means wallwashing... all the oil gets sprayed off the cylinder walls by all that fuel..

rich also means wallwashing... all the oil gets sprayed off the cylinder walls by all that fuel..
never thought of that...... but do you think the pg7 would make you run that rich over the pm6?

rich also means wallwashing... all the oil gets sprayed off the cylinder walls by all that fuel..

How does that make any sense considering oil is down in the crankcase and the only way it could get into the cylinder in the first place is if you have bad piston rings or worn valve seals. At which point running rich is the least of your worries.

As for the PG7 running rich in ZCs that is a myth. Think about it. The ZC is nearly the same engine as the A1 but it does flow much better. So if it can get more air why would it run more rich.

How does that make any sense considering oil is down in the crankcase and the only way it could get into the cylinder in the first place is if you have bad piston rings or worn valve seals. At which point running rich is the least of your worries.

As for the PG7 running rich in ZCs that is a myth. Think about it. The ZC is nearly the same engine as the A1 but it does flow much better. So if it can get more air why would it run more rich.


so you're saying the rings just have metal/metal contact with the cylinders?? :eek7:


and its not a myth...stand by the exhaust of any zc running on the pg7 and it reaks like gas...its still the best bet besides the zc ecu....but he's not even talking about running in a zc.. he's talking about the a6.

i have the zc and the pg7 i run 93 gas and my car doesn't run rich unless i'm @ WOT but any car should do that... i enjoy the pg7 i have used all 3 ECU's in my car pg7, pm7 and pg6 they are all about the same except the pm7 bogs out at around 115 or so.. i say put the pg7 in your car you'll like it. a friend has it in his stock car he races in scca stock-E he enjoys it

Uh...I think the PM7 is the ZC ECU - it has a governor in it at 112MPH.

Suprisingly it runs great! It accelerates quicker. I drove it with the pg7 for a little and then put the pm6 back in and i noticed that it accelerates alot faster with the pg7. I guess I did have enough air to handle a little more fuel. It reaks like gas when I lay on it but thats probly due to my cat. converter being hollowed out.

JimCRX i know i should PM u or start a new thread.. but did you feel a difference in gutting ur cat or did u loose low end torque? And how much did ur exhuast get that raspy sound?

JimCRX i know i should PM u or start a new thread.. but did you feel a difference in gutting ur cat or did u loose low end torque? And how much did ur exhuast get that raspy sound?

That raspy sound can sometimes come from not having a resonator in the exhaust system...usually between the muffler and cat. I had mine removed when I had my custom exhaust built, and I like it. For a li'l rice burner it sounds pretty good. :smokin:

so you're saying the rings just have metal/metal contact with the cylinders?? :eek7:


and its not a myth...stand by the exhaust of any zc running on the pg7 and it reaks like gas...its still the best bet besides the zc ecu....but he's not even talking about running in a zc.. he's talking about the a6.


if u cant find a ZC ECU what would u suggest to use? the pm6? or pg7?? because i have the pm6 sitting in my room for when i get the ZC

Well I always thought that gutting out the cat. converter would cause too much back pressure but I didnt have a choice because mine was clog with anti-freeze. I probably did loose some tourqe but it makes it a little more zippy and the sound didn't really change. Also, it smokes a little but barely noticeable.

so you're saying the rings just have metal/metal contact with the cylinders?? :eek7:


and its not a myth...stand by the exhaust of any zc running on the pg7 and it reaks like gas...its still the best bet besides the zc ecu....but he's not even talking about running in a zc.. he's talking about the a6.

No oil should be getting past the oil rings or at least the compression rings meaning oil will not be in the combustion chamber which is where the fuel is shot into. So if oil and fuel can't contact each other how would it wash anything.

..not gonna argue about this...and I'm not saying alot of oil gets up there...but the cylinder walls defintely remain lubricated with oil even after the piston retreats...

if u cant find a ZC ECU what would u suggest to use? the pm6? or pg7?? because i have the pm6 sitting in my room for when i get the ZC

..definiltey try to use the pg7 if you cant get the pm7.... the pm6 is just horrible on the zc... I mean, it runs fine... but when you get a pg7 or pm7...the difference is crazy..