I have a 97gsr in my eg coupe and i'm running a P28 ECU. Is there any harm in doing this??? If I was intrested in chipping, what chip should i get and how much difference does it make?

Can others post up there chipped ecu specs? thanks!

 

you need a P72 for the IAB (Secondaries)

 

Your fuel and ignition maps are off. You IAB's are also not being used. If your interested, I chip ECUs and can do yours. PM me for more info..

 

So my car right now as is, isn't running like it should be??

 

?

 

Right, ur using the D16 fuel maps....

Of course u won't run as weak as a D16...but never-the-less, ur probably running pretty lean...

You NEED the P72 for that engine :-\ Or to chip the P28 to make it act like a P72, either way, u need the GSR fuel and ignition maps..and as others stated, you need the P72 to work the secondary butterfly on the GSR...

get a P72, it's for ur engine's best good

 

so chipping the p28 to act like a p72 wont make the butterfly work? do you know where i can get a p72?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ATrin &raquo;</TD></TR><TR><TD CLASS="quote">so chipping the p28 to act like a p72 wont make the butterfly work? do you know where i can get a p72?</TD></TR></TABLE>

You can add IAB support to the P28... but I am sure whomever does it will charge you more then the cost of simply chipping. I know I charge more for people who need this work done at least... Honestly, I would grab the P72. It has the IAB support and the knock board which can be very usefull, especially if you ever get into datalogging. The money you will spend in converting the P28 over to the P72 spec will not be much less (if at all) then the cost of a P72 to begin with.

Running the car on the stock P28 is not a very good idea at all. I'd correct this ASAP..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

You can add IAB support to the P28... but I am sure whomever does it will charge you more then the cost of simply chipping. I know I charge more for people who need this work done at least... Honestly, I would grab the P72. It has the IAB support and the knock board which can be very usefull, especially if you ever get into datalogging. The money you will spend in converting the P28 over to the P72 spec will not be much less (if at all) then the cost of a P72 to begin with.

Running the car on the stock P28 is not a very good idea at all. I'd correct this ASAP..</TD></TR></TABLE>

thanks bro. guess i'll be in the hunt for a p72 ecu. know where i can get one???

 

Or just replace your Intake Manifold with a BLOX, AEBS, Skunk 2 or stock ITR, and you won't have to worry about the IAB's.

 

Chipped p28 ftw

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM_Ej &raquo;</TD></TR><TR><TD CLASS="quote">Or just replace your Intake Manifold with a BLOX, AEBS, Skunk 2 or stock ITR, and you won't have to worry about the IAB's.</TD></TR></TABLE>

A stock ITR manifold will not bolt up to a GSR head.

 

I don't really want an aftermarket manifold. I have a Skunk2 throttle body. Maybe later down the road i'll get one but not anytime soon. So does anyone know where I can find a P72?? Will it fit my obd1 harness???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ATrin &raquo;</TD></TR><TR><TD CLASS="quote">I don't really want an aftermarket manifold. I have a Skunk2 throttle body. Maybe later down the road i'll get one but not anytime soon. So does anyone know where I can find a P72?? Will it fit my obd1 harness???</TD></TR></TABLE>

I didn't know Skunk2 made throttle bodies..

Yes, it will fit just the same as your OBD-1 harness does. Now, if you actually did the swap correctly and wired up the IAB's and knock sensor is another story...

 

Hmmm i'll have to ask my friend about that one. he did the swap for me, well i helped too, but he did most of the wiring and stuff. but i don't think the iab is hooked up, i don't have vaccum lines coming from the valve for the iab

 

so are teh butterflies open all the time on the p28? im runnin a p28 with gsr swap but i ordered a gsr chip

 

IAB's are not open unless you open the valve manually and use something to block them. in any case, make life easier and pick up a P72. i use a USDM P72, cuz i need it for BAR.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by axtran &raquo;</TD></TR><TR><TD CLASS="quote">IAB's are not open unless you open the valve manually and use something to block them. in any case, make life easier and pick up a P72. i use a USDM P72, cuz i need it for BAR.</TD></TR></TABLE>

Negative ghostrider. IAB's are open all the time unless they are closed via the ecu/vacuum source for a low-end tq gain.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

You can add IAB support to the P28... but I am sure whomever does it will charge you more then the cost of simply chipping. I know I charge more for people who need this work done at least... Honestly, I would grab the P72. It has the IAB support and the knock board which can be very usefull, especially if you ever get into datalogging. The money you will spend in converting the P28 over to the P72 spec will not be much less (if at all) then the cost of a P72 to begin with.

Running the car on the stock P28 is not a very good idea at all. I'd correct this ASAP..</TD></TR></TABLE>



THe p72 will conrol everything fine (all the sensors) w/o any problems and w/o chipping it.. making a frankenstein P28 will cost a lot more :-\

 

newb question:

Is a P72 ecu obd1??
Whats a P28 obd1??