I just purchased a lt4 knock module, yet i am concerned that if i put it in, it could do damage to my car. How does it ingnore the "knock" in the lt4 and how EXACLTY does it work compared to the lt1 module. Thanks for your help. Nate

 

The LT4 motor was equipped with roller rockers which supposedly is more noisy than regular rockers....the LT4 KM is designed to "listen" so to speak for loud valvetrain noise or loud exaust noise, such as headers flowing and not to retard the timing under those conditions, the Lt1 KM will retard timing if the slightest bit of knock is heard.

 

TTT

 

i'm planning to purchase one my self, and yet i dont understand how it works

 

Think of it as a "smarter" knock module. It's better able to figure out what is true knock and what is just "engine noise" (Loud exhaust, loud valvetrain, loud stereo, etc...) You don't really gain any HP from it, it's just you won't pull timing at higher RPMs, when you engine is making the most noise.

 

does it decrease the possibilities of wrong engine knock?? btw, what is an engine knock anyways?? ::i'm a real idiot on this one::

 

the lt4 kn is not as sensitive as the lt1 kn. which means that it will not pick up false knock if you have roller rockers. if you are picking up false nock then that retards the timing and you lose horsepower.

 

The exhaust on my car is extremely loud. Can the lt1 kn pick up false knock from a loud exhaust sytem? Would the lt4 kn fix this? I haven't seen any lt4 kn's sold on any sites, where could i get one for cheap?

 

Can you get an LT4 knock module for a 93? I know the computers are different.


Joe

 

i just ordered mine thursday night from GM parts direct only 36 and change delivered to ur doorstep all shipping included on the site its like 27.66 i think hope this helps

 

uh uh...i have one more question...can i install this by my self?? thanks

 

Should take you about 5 minutes to put in the KM.

1) Unhook battery.
2) Remove two 10mm bolts holding PCM.
3) Pull PCM out of hole.
4) Remove two bolts holding KM cover on side of PCM and remove cover.
5) Push in side clips on the KM and pull out.
6) Push in new LT4 KM until it clips in.
7) Reverse procedure.

 

Nope. There is no Knock Module on your '93. If I'm wrong, I apologize, but I'm about 90% certain.

 

http://www.projecttransam.com/projects1.asp


To back up SStupid, 1993s do not have the replaceable knock module.

 

You're right, you can't put an LT4 KM in a 93, my friend found that out after he bought one.