First of all, I love that testimony at the end. It makes me feel I did something worthwhile.The knock sensors are piezoelectric crystals that are basically tuned for certain frequencies that are found when the engine experiences detonation they verify this via Dyno testing cuz a lot of it's dependent on piston and combustion chamber design etc.
Na cars specify a higher torque number for tightening the water jacket drain plugs aka the knock sensors then the supercharged cars which specify a lower torque which makes them less sensitive since they have a piston with a dish reducing compression ratio.
All I know is that more than a few times I've come across Oddball Hardware numbers and vehicles with really weird f****** issues and it makes sense if you look at the bell curve of life that there's going to be some lower quality s*** that gets tossed in your parts bin cars.
You can't let good-ish Parts go to waste.
Near as I can tell they have tons of Oddball numbers for probably very specific calibrations to make these computers work with certain vehicles...
Anyone else remember how every now and then there'd be someone with just an entire knock lobster no matter what they f****** did?
Dave aka @02BlueGT did.
Changed the Oddball computer to a 7440 and all problems disappeared.
Nothing changed even with an entirely different engine until we replaced the PCM
Now it's nearly one of the first things I check on a person's computer
Second of all, I never would have guessed that NA and SC cars had a different knock sensor torque spec! Although I probably would have found that in the FSM when it was actually time to swap those out, it's great food for thought. So I assume the knock retard software calibration is the same? I've never seen a table in HP, so I'm guessing they were turned off in powertunr or something. Either way, mechanical calibrations are cool. lol