LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Computer program for Cats

Old 04-04-2019, 10:33 AM
Registered User
Thread Starter
Join Date: Jan 2006
Location: New Carlisle Indiana
Posts: 61
Question Computer program for Cats

Years ago I had MADTUNER reprogram my computer did a great job. He programed the catalytic converters out. Now i want to update the exhaust and put high flow catalytic converters in. The question i how do I program the computer for the cats?
96 SS 1424 is offline  
Old 04-04-2019, 11:02 AM
Super Moderator
Injuneer's Avatar
Join Date: Nov 1998
Location: Hell was full so they sent me to NJ
Posts: 67,295
Re: Computer program for Cats

Only if you want the PCM to run the diagnostics for cat converter performance, which restores the ability of the PCM to set codes for cat performance. That is what he "programmed out". The minor change in exhaust system back pressure from the high flow cats will result in small changes to air flow into the engine, but the MAF sensor picks that up.

Last edited by Injuneer; 04-04-2019 at 03:39 PM.
Injuneer is offline  
Old 04-04-2019, 11:41 AM
Registered User
Thread Starter
Join Date: Jan 2006
Location: New Carlisle Indiana
Posts: 61
Re: Computer program for Cats

So once I install the new exhaust system and plug in all the sensors will it be good to go. Or will I still have to adjust the program?

Last edited by 96 SS 1424; 04-04-2019 at 03:39 PM.
96 SS 1424 is offline  
Related Topics
Thread Starter
Last Post
Computer Diagnostics and Tuning
04-24-2005 06:50 PM
Parts For Sale
06-04-2004 03:21 PM
LT1 Based Engine Tech
02-08-2004 10:28 PM
SlickBlack Z
LT1 Based Engine Tech
01-20-2004 02:41 PM
LT1 Based Engine Tech
04-12-2003 02:28 PM

Thread Tools
Search this Thread
Quick Reply: Computer program for Cats

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.