LT1 knock sensor delete

[j0n]

http://web.camaross.com/forums/showthread.php?t=361674

thoughts?

[foff667]

ask jon about lt1 tuning...he might be able to do just what that setup does...i know with my tuning software i can do alot of things with the knock sensors including but not limited to desensitize them.

[SteveR]

I don't know if that's a good idea. GM put that in there for a reason. A common mod is to replace the LT-1 knock module with the LT-4 one. It works much better.

[j0n]

i know about the lt4km and whatnot...i just think i'd rather know when the engine is knocking rather than just silently retarding timing

[foff667]

Originally Posted by SteveR

I don't know if that's a good idea. GM put that in there for a reason. A common mod is to replace the LT-1 knock module with the LT-4 one. It works much better.

some cars just tend to get false knock more then others...like kristens car i just got done tuning at 5000 rpms it would get a bunch of KR for no obvious reason, no matter how much timing i pulled it didnt even decrease so we had to desensitize them slightly...**** happens...thankfully she has the program so can do her own tuning from here on out but at the time there was no quick anwser to her problems...but her car just died once it hit 5000 rpms like a limiter or something...maybe a form of TM kicking in or something but there wasnt much i could do about it other then what I did. generally though i dont touch them if at all possible...its more of a last resort thing.

[Fasterthanyou]

Okay, this is going to make me sound like God... again, when I don't want too but here's an offer to undermine that company. I can build a circuit (have one in my car) for $60 that'll do exactly the same thing. I got the circuit from the buick GN guys. The only difference is it doesn't have an indicator, only an LED and a buzzer that you can turn on and off. More knock makes a longer duration LED/buzz. Works really well and just put a switch imbetween the pcm and this circuit to switch between the 2.
Another thing I can do with the 94-95 Lt1's is speed up the recovery rate of the SA, limit the amount of retard (in PE and non-PE), and a few other things. The best solution would be to disable the knock sensor below a certain vehicle speed like 40mph or whatever is just above 1st gear redline. This I can't do with these pcm's but I could disable the knock below a specific engine temp. This way, if you race at the track at a cooler temp you won't have to worry about the knock retard, only when you're up to street driving temps.
There are a lot of options but disabling the knock sensor is just stupid. The only time you'd do that is if you're running solid mounts all around, super stiff suspension, and have a trans that shifts so hard it puts your head into the back of the seat at part throttle (paul has this). Even then, with the older ecm's I can tune the knock sensor with more control, just seems like the Lt1 pcm's haven't been fully hacked yet leaving a lot of that stuff hidden. Somebody want to give me $60k and I'll spend a year figuring out the code .

[12secondv6]

First, see if it is false knock or real knock.

I'd be REALLY nervous about deleting it..... have you scanned your car yet?

[j0n]

Originally Posted by 12secondv6

First, see if it is false knock or real knock.

I'd be REALLY nervous about deleting it..... have you scanned your car yet?

not my car i post as j0n everywhere and i was just browsing cz28 and it sparked my interest...btw jon i hate you and your ****ing brain

[12secondv6]

Oh ok then

I'd still be leery about doing that.