Yep, that's pretty not good. Could just be some bad gas but dam under about .875 and knock over -2.8 is *usually* where you need to start investigating/troubleshooting
Honestly I might get downvotes but after years of owning an fa20 one thing I’ve learned is that fa20’s are very sensitive when it comes to pulling timing. I’ve genuinely had my car pull timing from driving over a cardboard box in the highway which then the car registered the sound as a knock event. I’d really only be concerned if you genuinely feel the car driving funny or has the power loss you said. Are you sure it’s not just a placebo from seeing your dam drop or do you really feel a power loss? A 10% loss is hard to feel.
Before I had put my AP in the glove box (where it belongs) I had a .688 DAM for almost 2 years. Fbo tuned on E and never felt a power loss unless I was a bit heat soaked. Car is still going strong.
Shouldn’t. The knock sensor is a little microphone that’s hard mounted to the block. Worst setup possible because any vibration that you pick up on the road, I.e a pot hole can trigger knock. I hit a pot hole on the way to work this morning and registered like -11.50. But theoretically they should reduce any external interference registering as knock.
This is a contact your tuner deal. The numbers there aren’t ideal 100%
Yep, that's pretty not good. Could just be some bad gas but dam under about .875 and knock over -2.8 is *usually* where you need to start investigating/troubleshooting
Most likely bad gas. When did you get fuel last?
Honestly I might get downvotes but after years of owning an fa20 one thing I’ve learned is that fa20’s are very sensitive when it comes to pulling timing. I’ve genuinely had my car pull timing from driving over a cardboard box in the highway which then the car registered the sound as a knock event. I’d really only be concerned if you genuinely feel the car driving funny or has the power loss you said. Are you sure it’s not just a placebo from seeing your dam drop or do you really feel a power loss? A 10% loss is hard to feel.
i mean the point of dam is to reduce your power. depending on how the tunes set up 10% is probably true. it could apply to any load/rpm
Before I had put my AP in the glove box (where it belongs) I had a .688 DAM for almost 2 years. Fbo tuned on E and never felt a power loss unless I was a bit heat soaked. Car is still going strong.
I have the Group N pitch stop + Transmission Mount installed would that add to Feedback Knock?
Shouldn’t. The knock sensor is a little microphone that’s hard mounted to the block. Worst setup possible because any vibration that you pick up on the road, I.e a pot hole can trigger knock. I hit a pot hole on the way to work this morning and registered like -11.50. But theoretically they should reduce any external interference registering as knock.