LT1 knock module comparison?

[babywag]

It's well documented on the LT4 module being less sensitive, but has there ever been a comparison of other modules done?
There are several different ones, it would be interesting to see the actual outputs compared.
There may be a less sensitive one besides the LT4?
For example maybe a 1996 LT1 b-body module is less sensitive than a 1994 b-body module...

Borrowed from http://lt1swap.com/lt1_bcc.htm



16177700

1994-1995

F-Body 5.7L


1
CONFIRMED


16188309
1994-1995

B-Body 5.7L

2
CONFIRMED


16188709
1994-1995

B-Body 4.3L

2
CONFIRMED


16177690
1994-1995

LT1-Corvette

2 ??
CONFIRMED


16214661
1996-1997

F-Body 5.7L

1
CONFIRMED


16214681
1996

LT4 Corvette

2 ??
CONFIRMED


16214671
1996

5.7L B-Body

2
CONFIRMED


16214691
1996

4.3L B-Body

2
CONFIRMED

[steveo]

"sensitivity " is a metric relative to the acoustics of your particular engine, so any testing would be very specific to that build.

an lt4 module isn't "less sensitive" it just rejects and accepts different sound. in fact there is a chance it will be "more sensitive" on a particular engine.

[steveo]

how about reverse engineer the filter, get a signal generator and log knock counts. you can map out exactly what frequency each module it considers knock. then its a matter of a scope on any engines knock sensor with eehack jacking up timing to force knock, to determine the best knock module or if one is even appropriate

[babywag]

I was merely curious if anyone has ever take a closer look @ the different modules and compared them.
They have to have differences in the output signal(s) based on the excluded/included frequencies.
Otherwise there would simply be one for all LT engines.

Rumor has it the LT4 module was designed to exclude the "noise" from the roller rockers, and that is why they are less "sensitive" on the LT1.
But, has anyone ever (like you said) put them to the test, and posted their findings?

Too bad I didn't get interested in this stuff several years ago.
Used to have a group of engineers @ work, with all the test equipment one could ever want to use.
They were always up to a challenge.

[lionelhutz]

I thought about reverse engineering the filter. Instead, I just turned-off the knock retard and quit worrying about it. Having knock detection would be nice, but it's hardly necessary to have.