DFI and ECM Discuss all aspects of DFI (Digital Fuel Injection), ECMs (Electronic Control Module), scanners, and diagnostic equipment. Fine tune your Third Gen computer system for top performance.

EGR delete, what ECU mod?

Thread Tools
 
Search this Thread
 
Old Mar 28, 2015 | 01:16 PM
  #1  
Fulingbusen's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2013
Posts: 21
Likes: 0
EGR delete, what ECU mod?

Hello,

I have a firebird trans am
-87 and I am running a stock engine with HH 1 5/8" headers, exhaust without cat, 1.6 rockers and no EGR.

What alternatives do I have when it comes to ecu mod? Send it in to a company like pcmforless or PCM of NC and use an adapter?
Reply
Old Mar 29, 2015 | 09:52 AM
  #2  
RBob's Avatar
Moderator
iTrader: (1)
 
Joined: Mar 2002
Posts: 18,432
Likes: 233
From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: EGR delete, what ECU mod?

IIRC, the easiest way to disable the EGR code is to relocate the MAT sensor. Stock is in the bottom of the plenum, many move it into the incoming air stream.

The only thing that year ECM code uses the MAT temperature for is to enable the EGR. Keep it cold and the ECM never enables it.

The other thing that can be done is to set the EGR enable temperature threshold high. Need to burn a chip to do this. Moates G1 adapter is the easiest way to R&R the chip into the ECM.

RBob.
Reply
Old Mar 29, 2015 | 10:22 AM
  #3  
Fulingbusen's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2013
Posts: 21
Likes: 0
Re: EGR delete, what ECU mod?

If the MAT is only used to activate the EGR, wouldn't it be easiest to use a resistor to fool the ecm into thinking that it is cold all the time?
Reply
Old Mar 29, 2015 | 02:15 PM
  #4  
Fulingbusen's Avatar
Thread Starter
Junior Member
 
Joined: Oct 2013
Posts: 21
Likes: 0
Re: EGR delete, what ECU mod?

Ordered a chip with adapter from Custom chips Inc.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jerzyperson
Carburetors
6
Nov 13, 2015 01:07 AM
ssgt usaf
TPI
1
Sep 21, 2015 12:45 PM
pacoelrapido
TPI
3
Sep 11, 2015 02:41 PM
Silver Spear
South East Region
0
Sep 8, 2015 12:06 PM
Silver Spear
South East Region
0
Sep 8, 2015 11:59 AM




All times are GMT -5. The time now is 07:03 PM.