Now I know what you're thinking "not another one of these" but hear me out. My current setup is:
Gen V
Ported blower
Ported LIM
Ported heads
Custom cam (somewhat of a hybrid kind of sits between a vs and an zzp xp)
Headers
N* throttle body
60 injectors
DW 300 pump
Hotwire kit
Built transmissions
E85
Poly mounts
For the past year I've been running a 2.8 pulley and it's been awesome then a few days ago I started noticing some random kr. It has really been all over the place sometimes on tip in, sometimes at wot, sometimes part throttle, traction control on, traction control off, 30mph roll, dig, whatever. But its completely random. I can do 10 pulls and have 0.1 blips at tip in and nothing more, I can do 10 pulls and have 1-9 degrees of knock on all of them. I've went to bigger pulleys, no change (currently on a 3.8 and it's still doing it). I've searched for anything that could be touching together and cant find anything, I've changed fuel filter, wires and plugs (plugs showed no signs of detonation) still nothing. There are no misfires, afr has stayed consistent, no bottom end noise, nothing. So I'm wondering what are some other things I could check. Possibly a bad sensor (I've never had one go bad but who knows), noise from transmission maybe, supercharger coupler going bad (it doesn't sound any different from normal and the coupler was replaced less than 10,000 miles ago)? I'm really open to all suggestions at this point
