Hey guys,

I was able to fix this issue about a week ago. There were 2 main issues that contributed to the timing problem - my knock sensor was unplugged, and my IAT readings were thru the roof. Read on for more details.

I learned that your intake air temperature (IAT) influences timing. The PCM accounts for hot intake air by retarding timing 6 degrees or more when you have an IAT over 130. There are tables online, but basically it starts pulling timing at 90dF and increases the retard WRT temp. (It also advances timing in cooler Temps too!) My intake temp was great in the morning, but as I got closer to work, and during city driving, it would reach up to around 50dF over ambient!!! Average highway temp was about 20-30dF over ambient. So I started fixing my issue by dumping my Hot air intake, and buying flex tubing to run to the fender. Now, I have a fender well intake, and my readings are only about 10 degrees over ambient. I don't have it sealed off from the engine or anything, so there's a lot of room to optimize the intake, which I'll do next week. This improved my timing a bit, and I noticed that my car wasn't driving like **** anymore by the end of my commute.

I still had the weird RPM related timing issue though. After plugging the knock sensor back in, this issue was gone. My car now runs great.

Key takeaways? If a knock sensor becomes unplugged, fix it quick, they're super important. Also, it blows my mind that so many people don't care at all about using a hot air intake vs a real cold air intake. 6+ degrees of timing is a lot, people! Also, I've come to learn that there are many things that influence an IAT that aren't accounted for in many of the tests people run on youtube and what not.

And if you're still reading,
I have a new issue. When my supercharger kicks in, it seems to almost be screaming. It is probably 2X louder than normal. It started happening about 5 days after I put on the CAI. I tested the CAI by removing it, but the sound persists. any ideas? It sounds bad.

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