PR4 ECU's

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Dec 29, 2003 | 10:02 PM

clsmooth

Thread Starter

Joined: Sep 2002

Posts: 113

Likes: 2

From: Vancouver, BC, Canada

PR4 ECU's

Is anyone using a OBD-0 PR4 ECU to run their ZC? I heard it works. I figure a PR4 is cheaper than a PM7, but still better then a PG7.

Dec 30, 2003 | 05:35 AM

USDM 4G VTEC

Honda-Tech Member

Joined: Apr 2002

Posts: 4,834

Likes: 1

From: OH

Re: PR4 ECU's (clsmooth)

my friend has a PR4 with his ZC........ ran ok but redlined at 6800.....
i let him borrow my PG7 and ran better....
either one theres no cheaper than another one..... just get either

Dec 30, 2003 | 07:38 AM

spiceisler

Honda-Tech Member

Joined: Jun 2002

Posts: 645

Likes: 0

From: Brooklyn, NY

Re: PR4 ECU's (USDM 4G VTEC)

I'm running a chipped PR4 with my ZC.

Dec 30, 2003 | 11:39 AM

clsmooth

Thread Starter

Joined: Sep 2002

Posts: 113

Likes: 2

From: Vancouver, BC, Canada

Re: PR4 ECU's (clean90Si)

Do you HAVE to chip a PR4 to get it to run a ZC properly?

Dec 30, 2003 | 03:44 PM

NCchris

Junior Member

Joined: Nov 2001

Posts: 614

Likes: 0

From: Asheboro, NC, 27203

Re: PR4 ECU's (clsmooth)

If you are running any engine besides the one the ECU was designed for, prolly needs to be chipped and the correct fuel and timing maps spliced in. Remember, the pr4 was designed to run a 1.8L, the zc is 1.6L. The zc likes to rev more than the b18a, so yeah, chip it.
HTH
chris

Modified by NCchris at 9:10 PM 12/30/2003