I have 3 virgin ECU's sitting here and I need to chip one of them for uberdata. I have a 93 Civic Si with a b18c1 and a Skunk2 intake manifold. I am going turbo SOON....like in the next few weeks.

These are the ECU's I have:
JDM P30
JDM P72
USDM P72

I want to have the knock sensor as an added safety measure so I recently traded a chipped P28 for the virgin JDM P72. Which ECU should I chip? I am leaning toward the P30 but I know the USDM P72 might be easier to work with. Obviously the intake butterflies are not an issue because I have the Skunk2 manifold. BTW everything is OBD1

TIA

 

from my research it seems like there is more info out there on USDM ecus and from what people say they are easier to chip than their JDM counterparts

 

For Uberdata, and out of your choices there, I would use the USDM P72. I would have preferred the P28 if it was USDM. The JDM ECUs can be troublesome on occasion, but if you decide to use Crome instead of Uberdata, I would use the JDM P30.

 

Use which ever you can get chipped...

The JDM ecus are harder to chip then usdm ecus.
I would save the usdm p72 as it is rare & you can sell it for a lot more then most ecus.

 

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

The JDM ecus are harder to chip then usdm ecus.
I would save the usdm p72 as it is rare & you can sell it for a lot more then most ecus.
</TD></TR></TABLE>

The level of difficulty depends on the skill of the individual that is working the ECU. I find it easier to just remove the conformal coating and solder the SMD gate on the JDM ECUs instead of desoldering 20 locations and then soldering in the DIP gate on the USDM ECUs. I use a Hakko 808 so it's not like I have to fight with desoldering braid.

The USDM P72 would sell for more, but Uberdata works better with the USDM ECUs than the JDM ones.

Personally I would run Crome and use the JDM P30. I would sell the USDM and JDM P72s and put the $ into datalogging and emulation hardware.

 

Thanks for the help.

I would like to try crome in the P30 also but I don't know anyone locally who is experienced with it. There is an uberdata guru here who is going to help me tho so that is why I was going to run uber.

Uber in the P30 would still be ok right?