DOHC Vtec ecu

Thread Tools
 
Search this Thread
 
Old Jan 27, 2003 | 06:53 PM
  #1  
I Gotta Question's Avatar
Thread Starter
 
Joined: Sep 2002
Posts: 715
Likes: 0
Default DOHC Vtec ecu

Will the P30 work good on my SOHC Vtec? Or will it screw something up? I was thinkin about gettin one from a friend of mine.
Reply
Old Jan 27, 2003 | 07:18 PM
  #2  
civicdragger818's Avatar
 
Joined: Sep 2002
Posts: 665
Likes: 0
From: Burleson, tx, united states of america
Default Re: DOHC Vtec ecu (89_CRX_HF)

I think to get the p30 to work you have to run obd-1 I dont know how ever if the p30 will run a SOHC car. I think it will but I am not sure.
Reply
Old Jan 27, 2003 | 08:45 PM
  #3  
Agent#ONE's Avatar
 
Joined: Dec 2002
Posts: 1,009
Likes: 0
From: ALL MOTOR B18C5, USA
Default Re: DOHC Vtec ecu (civicdragger818)

if you are still running obd0 wiring and ecu, then get a pr3.
ive got one
mugen proggy
225 shipped
Reply
Old Jan 28, 2003 | 08:49 AM
  #4  
I Gotta Question's Avatar
Thread Starter
 
Joined: Sep 2002
Posts: 715
Likes: 0
Default Re: DOHC Vtec ecu (Agent#1)

I am currently obd1. Will the P30 work on my sohc vtec?
Reply
Old Jan 28, 2003 | 09:00 AM
  #5  
EP3_05's Avatar
Member
 
Joined: Mar 2001
Posts: 3,668
Likes: 1
From: West Chester, PA, USA
Default Re: DOHC Vtec ecu (89_CRX_HF)

It will work but obviously the fuel and timing maps will be optimized to run a dohc vtec engine. The vtec engagement point will be not optimal either but this can be taken care of with a vtec controller and some dyno time. I think the P30 and a vafc will be your best bet.
Reply
Old Jan 28, 2003 | 09:24 AM
  #6  
89civicdx's Avatar
Honda-Tech Member
20 Year Member
Liked
 
Joined: Jan 2001
Posts: 2,273
Likes: 3
Default Re: DOHC Vtec ecu (91civic)

get it chipped then run a sohc vtec program
Reply
Old Jan 28, 2003 | 07:32 PM
  #7  
StorminMatt's Avatar
Honda-Tech Member
 
Joined: Feb 2002
Posts: 4,303
Likes: 2
From: Sacramento, CA, USA
Default Re: DOHC Vtec ecu (89_CRX_HF)

There are going to be a few problems with running a P30 with an SOHC VTEC engine. Assuming your car is wired for a P28, one problem is the knock sensor. The P30 will be looking for one. And when it does not find one, it will flash the check engine light. Then there are the fuel maps. Simply put, they are wrong. Finally, you can do some real damage if you run the motor to the B16A rev limit on stock internals.

As for the PR3, these same problems apply. But you can add to the list a check engine light due to the lack of a second oxygen sensor.
Reply
Old Jan 28, 2003 | 07:48 PM
  #8  
zCivic's Avatar
Honda-Tech Member
20 Year Member
 
Joined: Mar 2002
Posts: 1,860
Likes: 0
From: Tri Cities, TN
Default Re: DOHC Vtec ecu (StorminMatt)

both of the codes are fixable, ground the knock sensor from the ECU and the 2nd o2 sensor wire just add to you existing o2 sensor. But like you said DONT DO THIS!!!!! 8200 on a SOHC will lead to kaboom very quickly. Stick with you P28.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
fryman
Honda Civic / Del Sol (1992 - 2000)
10
Jul 14, 2011 10:17 AM
todubbled1
Honda CRX / EF Civic (1988 - 1991)
22
Mar 7, 2009 07:12 AM
db1_jdm
Honda CRX / EF Civic (1988 - 1991)
5
Dec 17, 2007 10:10 PM
Magick211
Honda CRX / EF Civic (1988 - 1991)
1
Aug 1, 2003 06:56 PM
ProjectCRXtacy
Honda CRX / EF Civic (1988 - 1991)
3
May 3, 2002 01:17 AM




All times are GMT -8. The time now is 01:55 AM.