Good book?
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
There are no books (that I know of) that cover reprograming proms. A good book for getting started and understanding the basics of TPI is "How to repair and Modify GM Fuel injection" (or something close to that) By Ben Watson.
In it he talks about things like BLM's, INT and what they mean. To find out what to change to do what you need to scour the internet and gleen bits of info from all over.
In it he talks about things like BLM's, INT and what they mean. To find out what to change to do what you need to scour the internet and gleen bits of info from all over.
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
There is another book thats called " Corvette Fuel Injection & Electronic Engine Control" It is available at Amazon.com the book runs about $24 new and half of that is you find it used. It is a decent book that gives the novice a very good understanding of how GM EFI works. There are a few minor mistakes in the book, but all in all its a good book.
Another place you can look for more information is on the third gen website, there is a huge amount of information there about chip tuning.
http://www.thirdgen.org/techbb2/foru...php?forumid=16
Another place you can look for more information is on the third gen website, there is a huge amount of information there about chip tuning.
http://www.thirdgen.org/techbb2/foru...php?forumid=16
Melting Slicks
Joined: Jun 1999
Posts: 2,949
Likes: 23
From: Bowling Green KY
Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
Originally Posted by Rohn
someone speak to this. is there any issues with the stock ECU in the 1985? i know my 1984 ECU was not hacked and i replaced with a 7747.
Drifting
Joined: Mar 2005
Posts: 1,923
Likes: 0
From: GA
To a degree. While the 870 has endured for 20 years now, it as mentioned, is sloooooow. But there are other limiting factors with it. The bin size is 4k, which means that there is less actual data and parameters to work with (some would say that is a plus), there is limited support for it (as compared to the 165, 747, 730 ECM's), it uses the very expensive MAS module ($785 from GM last I looked), where the 165 uses 2 $14 relays in its place.P.S. I used to have the 870 ECM in my car as well and it served me well for 17 years, until I modded my engine and wanted a better supported ECM to run things.
Last edited by Morley; Jul 8, 2005 at 01:31 AM.
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