Do I have a 24tooth or 58 tooth ECM?

[matt]

Hi, I have an E40 ECUfrom a 2006 GTO. The engine is a 2006 LS2 with 24 tooth reluctor wheel. The engine and the ECU were not a matching pair....Is there any way I can tell from using the EFI live tune tool weather the ECM is for a 24 or 58 tooth engine?

[mr.prick]

All 06 GTO's are 24x.
Camaro/Firebird 1999-2002 24 Tooth
Corvette 1997-2004 24 Tooth
GTO 2004-2006 24 Tooth
Corvette 2005-2008 58 Tooth
GM LS Truck SUV 1999-2005 24 Tooth

[ScarabEpic22]

All E40s are 40 tooth, the E67/E38s are 58 tooth. I know for a fact thats why GM switched from the E40 in the 06 TBSS (and 05-06 5.3 TBs) to the E67 for 07-09.

[doubledip]

All E40s are 40 tooth, the E67/E38s are 58 tooth. I know for a fact thats why GM switched from the E40 in the 06 TBSS (and 05-06 5.3 TBs) to the E67 for 07-09.


hehehehe we know what you mean but just to clear it all up for any others looking for the info "All E40s are 24 tooth"

[gmh308]

hehehehe we know what you mean but just to clear it all up for any others looking for the info "All E40s are 24 tooth"

I thought E38's were 38T and E67's were 67T. :doh2:

[doubledip]

yeh but the trick is the LS1's how do hey make them run on 1 tooth :secret:

[gmh308]

yeh but the trick is the LS1's how do hey make them run on 1 tooth :secret:

Well........it's a REALLY BIG tooth! :hihi:

[mr.prick]

:anitoof:

[ScarabEpic22]

hehehehe we know what you mean but just to clear it all up for any others looking for the info "All E40s are 24 tooth"

Good point.


E40 = 24 tooth

[gmh308]

:anitoof:

That looks like the tooth missing from the "E58" 58X wheel, which is really a 60X. :)

[mr.prick]

This thread is "long in the tooth". http://smiliesftw.com/x/mongolde0.gif (http://smiliesftw.com)

[Highlander]

Is the E40 PCM a "better" pcm than a LS1 PCM?