Does it happen only if you have a loud exhaust? My Larini 8" has gotten pretty loud recently and probably need to be repacked.
resetting my ecu hopefully doesn't throw a wrench into troubleshooting. I guess I can put it on the dyno again to see if I make more power.
Are you guys saying that there is no fix for it and I have to reset my ecu every time I drive it to make the advertised power? I like the idea of a bandpass filter but it still crazy to have to apply a bandaid. If there is actual knocking on some cars and to filter it or reduce sensitivity seems pretty risky.
No, I'm not saying any of those things...
Exhaust won't fix it... It's most likely the blower. Some of the 62s are louder than others, etc... It's clear as a sunny day when monitoring the harmonics on the dyno. NA and tubo motors are perfectly quiet and make near the same noise at red line as they do at 4,000RPM. Strap a blower motor down to the rollers and listen with the same frequency and gain, and you'll see what I mean...
As I said prior: It's not a sensor. It's not the ECU and it's not necessarily something dangerous... The problem took me a lot of work and expensive equipment to remap and that remapping works on most cars. The official fix from Lotus Cars is to remove the knock sensor and zip tie it to the firewall. No joke. They cannot remap the knock sensor. I can and do.
As I mentioned, the new maps I made for the knock sensor are still plenty sensitive enough to protect the motor and in MOST cases eliminate false knock. If an ECU still picks up knock with one of my maps (Torque maps), I simply recommend that we really tread lightly before desensitizing further to be sure they we're truly diagnosing false knock vs real knock... The problem is that I've ran into exactly 3 other shops on the continent that understands tuning. Every other dyno shop I've encountered has that expensive piece of equipment and the only thing that they even sorta know how to do with it is do some full throttle sweeps. So gathering data to truly fix problems cars from afar is quite challenging:shrug: That's probably why so many problem cars end up at my shop.lol...
As they say, if it were easy, everyone would be doing it
As for resetting... simply take your KF cable to the dyno or use Robs... He has one... Do a pull and then plug the cable in and hit reset... The power will pop right back up and the dyno sweep will look fine again...
-Phil