Help anyone? I get a CEL at 90%-full throttle and I was wondering what's wrong?.. UTEC seems to be doing it's thing, it was fine during the winter... my boost doesn't go over 16.5psi.. and i'm sure the fuel is good.. I'll try and get some maps later...
A flashing CEL that doesn't stay on means the UTEC detected knock. Unless you were logging, you probably don't know how much knock. If you haven't had any issues all winter, I probably wouldn't worry about it. If you want to be on the safe side, log a few WOT runs just to make sure. Sometimes the UTEC just hears engine noise(aside from knock), and it's very sensitive up top. You also may have gotten a bad tank of gas. If the CEL is staying on, then we really can't help until you get the code pulled.
I'm new to Scoobies and Turbos, but maybe this might help, it kinda made sense to what your experiencing. http://forums.nasioc.com/forums/showthread.php?s=&threadid=552101 Open Loop Manager This is a brand new product that we are introducing, from Vaus / The Open Loop Manager 2, or OLM-2 for short, is the incredible new device for the WRX. This little device is tapped into +5v, ground, MAP, and TPS signals. It watches the MAP signal and once it sees a certain MAP value (boost), it simulates a WOT signal for the ECU. This does two things: 1) It immediately forces the ECU into open loop fueling. 2) If stock boost control is still being used, it makes the ECU shoot for full boost no matter what the actual TPS value is. For those who have not heard of the PTFB issue, read on. The stock ECU limits boost to ~7psi until you go past 63% throttle (TPS). It also stays in closed loop fueling (stoich a/f of 14.7:1) during this 7psi. When installing an MBC, you will be able to boost a lot more than 7psi at lower throttle positions. The problem is that during this situation, the ECU does not switch to open loop fueling (rich) no matter how much boost you are running as long as you are under 63% throttle. Doing this for an extended period of time causes high EGTs, detonation, and engine damage. Introductory price if $113.98 + shipping and available for purchase from our website . We have 5 in stock to start, so get yours while you can. Kevin Kastle's Korner www.kastleskorner.com [email protected] [/B][/QUOTE]
Impossible to say for sure without a log, but anywhere from one to all three of the following will probably fix it: 1. Slightly retard ignition timing 2. Add a bit of fuel 3. Lower the boost
