ECM question
Thread Starter
TECH Fanatic
iTrader: (9)
Joined: Aug 2007
Posts: 1,237
Likes: 1
From: Rocky Mtn thin air & snow...
ECM question Hey all,
I'm in the process of trying to prepare for my winter project (LQ9 swap), & since I really want to retain VATS, I've been told that I need to use an F-body ECM. The problem is that I don't know which ECU would be better to use - the site I've been checking lists both of the following as ECM choices for an '00-'02 F-body:
(ECM), (behind right strut tower), 5.7L, ID 9354896
(ECM), (behind right strut tower), 5.7L, ID 12200411
I suspect (based on a post in the ECM/programming forum) that the 2nd one might be the later model but both appear to have been used throughout at least 3 years of LSx F-body production. Both appear to have also been used in a large number of truck/van applications as well..
Does anyone happen to know the differences between the two ECMs/PNs??? Is one preferred over the other??
Thanks for any help you can give...
I'm in the process of trying to prepare for my winter project (LQ9 swap), & since I really want to retain VATS, I've been told that I need to use an F-body ECM. The problem is that I don't know which ECU would be better to use - the site I've been checking lists both of the following as ECM choices for an '00-'02 F-body:
(ECM), (behind right strut tower), 5.7L, ID 9354896
(ECM), (behind right strut tower), 5.7L, ID 12200411
I suspect (based on a post in the ECM/programming forum) that the 2nd one might be the later model but both appear to have been used throughout at least 3 years of LSx F-body production. Both appear to have also been used in a large number of truck/van applications as well..
Does anyone happen to know the differences between the two ECMs/PNs??? Is one preferred over the other??
Thanks for any help you can give...
Last edited by V8Rumble; Nov 20, 2007 at 01:35 PM.
Joined: Sep 2004
Posts: 3,148
Likes: 12
From: Downers Grove, IL
You should be able to use the truck PCM. I know that in the factory configuration the VATS can`t be bypassed, but in my HPTuners software I have 3 choices on the security screen
1. Serial
2. PWM
3. None
I have not tried it yet but if I put it on PWM instead of serial I should be able to use the VATS byapss box to make it run
1. Serial
2. PWM
3. None
I have not tried it yet but if I put it on PWM instead of serial I should be able to use the VATS byapss box to make it run
Thread Starter
TECH Fanatic
iTrader: (9)
Joined: Aug 2007
Posts: 1,237
Likes: 1
From: Rocky Mtn thin air & snow...
Thanks for the responses guys, they're much appreciated. 
I don't know if my intent was entirely clear, I actually want to KEEP the VATS function, rather than disabling it. I've been told that if I utilize the PWM type, I can retain it as I'd like to. (I've held on to some notes & PMs that people have sent me about that.)
bczee, that's a great idea, it's just one that I'm holding on to as a "last resort". I know that John's been REALLY good about helping people out (even when they're not buying stuff from him), but I suspect that he's already got plenty of things on his plate without having people bug him & add to the pile...
Again, many thanks guys.
I don't know if my intent was entirely clear, I actually want to KEEP the VATS function, rather than disabling it. I've been told that if I utilize the PWM type, I can retain it as I'd like to. (I've held on to some notes & PMs that people have sent me about that.)
bczee, that's a great idea, it's just one that I'm holding on to as a "last resort". I know that John's been REALLY good about helping people out (even when they're not buying stuff from him), but I suspect that he's already got plenty of things on his plate without having people bug him & add to the pile...
Again, many thanks guys.
