Hydra Knock Threshold
 

What's yours at? I know every car will be different and nothing's guaranteed to be safe, but I'm a bit curious how others are setting this up. Here's mine from awhile back for comparison.

0 RPM: 0.42
800 RPM: 0.42
1600 RPM: 0.42
2400 RPM: 0.46
3200 RPM: 0.50
4000 RPM: 0.56
4800 RPM: 0.64
5600 RPM: 0.70
6400 RPM: 0.80
7200 RPM: 0.90
8000 RPM: 1.00
8800 RPM: 0.78

Those numbers look fine to me. Ill get mine up tonight

have you done any free revving while looking at the knock screen to see what your baseline noise level looks like?

I did the free revving and also a dyno pull without any boost (coupler blew off at the start of the pull). The free revving is a similar curve, just lower voltage readings. The pull without boost just moved everything up a bit while following the natural curve. I have 2 noisy spots that always show up regardless of what I do. One at 5400 and another at 6600, neither is detonation that could be verified with det cans.

The numbers I posted above were from tuning with electronic det cans and watching what the knock sensor showed. Here's what I'm currently running until I can get the new setup back on the dyno. This should be more inline with what most people are running.

0 RPM: 0.42
800 RPM: 0.42
1600 RPM: 0.46
2400 RPM: 0.50
3200 RPM: 0.52
4000 RPM: 0.56
4800 RPM: 0.56
5600 RPM: 0.58
6400 RPM: 0.60
7200 RPM: 0.62
8000 RPM: 0.66
8800 RPM: 0.66

My original numbers seemed a bit high to me and that's why I posted them. With all the blown motors lately I have been looking real hard at my own setup to find potential errors in what I'm doing.

I'd rather lose a degree or two of timing for noise than lose a motor to detonation...

Yup thats why my setup is like this:

0 RPM: 0.5
800 RPM: 0.52
1600 RPM: 0.58
2400 RPM: 0.6
3200 RPM: 0.62
4000 RPM: 0.64
4800 RPM: 0.66
5600 RPM: 0.68
6400 RPM: 0.7
7200 RPM: 0.7
8000 RPM: 0.7
8800 RPM: 0.7

In between what you had and have now Jay

RPM - Value

0 - .44
850 - .44
1700 - .44
2550 - .48
3400 - .51
4250 - .53
5100 - .53
5950 - .59
6800 - .63
7650 - .63
8500 - .63
9350 - .59
10200 - .61

The last two are pointless but its still funny to look at :-)

OK fellas I need this data BUT

what version hydra are you all running? Also, do you have knock amplifier enabled?

I'm currently running 2.5.