90 TSI FWD
15+ Year Contributor
- 264
- 11
- Oct 26, 2004
-
Columbus,
Mississippi
So I just swapped out my KeyDiver chip for V3. Before the swap, it ran great. No boost leaks or anything like that. Ran pretty strong, but a tad lean, so I got V3 and ditched the SAFC (I was adding +20 to keep WOT AFR's in the mid 11's).
I attached a few logs showing the front O2 cycling, but still stuck in open loop. Why am I stuck in open loop? I can't figure it out. Because the O2 is cycling, and I'm stuck in open loop, I'm getting an idle surge. This didn't happen before putting the chip in, so I believe something is not set correctly. I do have a CE code. I checked the wires at the MAF sensor, and they were fine. I will be switching to SD soon, but in the meantime, I would like to get out of open loop. My car runs great with the other chip in, so I don't see why the code would affect my issue at the moment.
You'll notice a few flat lines in the cycle. This is because I was slightly giving it throttle to keep a steady AFR on the UEGO. Might as well take advantage of the open loop, right? So I spent about three hours trying to get the linear wideband to match my gauge. I gotta say it sucks! I'm able to get it accurate from around 10.9 to 13.0 where it matters, so I'm going to leave it at that until I get gas and fix this open loop issues. If you have any suggestions, please reply! Thanks!
I attached a few logs showing the front O2 cycling, but still stuck in open loop. Why am I stuck in open loop? I can't figure it out. Because the O2 is cycling, and I'm stuck in open loop, I'm getting an idle surge. This didn't happen before putting the chip in, so I believe something is not set correctly. I do have a CE code. I checked the wires at the MAF sensor, and they were fine. I will be switching to SD soon, but in the meantime, I would like to get out of open loop. My car runs great with the other chip in, so I don't see why the code would affect my issue at the moment.
You'll notice a few flat lines in the cycle. This is because I was slightly giving it throttle to keep a steady AFR on the UEGO. Might as well take advantage of the open loop, right? So I spent about three hours trying to get the linear wideband to match my gauge. I gotta say it sucks! I'm able to get it accurate from around 10.9 to 13.0 where it matters, so I'm going to leave it at that until I get gas and fix this open loop issues. If you have any suggestions, please reply! Thanks!