RomRaider

If you turn off a CEL via the master switch table, it disables the fault logic. Turning off the master switch causes that subroutine to skip right around setting the fault bits active. So, you're not going to have it disable ignition advance, disable fuel trimming, disable AVCS, etc.

However that doesn't mean feedback from sensors isn't still used. Like the rear O2, if you pull it out of the exhaust and let it dangle in open air, even if you disable P0420, P2097, etc, the car will idle and cruise rich (~13.0-13.8 AFR).

Exactly my point. Disabling the CEL does not remove the potential impact that the resulting sensor value may have (the incorrectly named 'cold start injector' log parameter for example would indicate it is more than just 'is the air pump working or not'). That is, the ECU may determine a fault outside of setting a CEL, but the "solution" could result in unexpected behavior, especially when emissions is concerned. Or, similar to the rear O2 issue, the air pump may be involved partially in helping to determine post-start enrichment and when the value(s) is out of whack it causes the issue.

I know the site just came back online, but I would love to know if anyone has anymore insight into this.

I'm very interested by this tread.
I've got a EDM STI2006 with PE800cc.
Same problem, sometimes, with a middle hot restart the engine don't go well and can stop, 20s like this and after going well again.

I'm doing a swapp with big head without air pump access, don't know exactly how to tune my map without air pump.
Just desable P0410, P0413, P0414, P0418 ? also P2432, P2433, P2440, P2441, P2444 ?
Can I abolish all the air pump system ?

thanks for all your answers
regards
Xavier

My airpump will be missing when I finish my engine build and get it in. I will have to solve the problem somehow as I am replacing the injectors.

Gqabe

Yup. Just disable all the "Secondary Pump System" CELs.

I have several 07 STI's running around w/o air pump systems installed. All have a fabricated plate on the left cylinder head to block off the exhaust port.
All have tuned well, w/o check engine lights (disabled secondary air pump etc codes). Couple have upgraded turbos, and have tuned well.
Although, in general, 07 STI's have been lacking around 20hp-to-wheels on baselining. I would have to say that the 07's are the lowest Hp baselines of all the STi years thus far.
I have only had one 07, that produced 04,05,06 hp ratings. HP comes sooner, w/ the more aggressive AVCS mapping, w/ the 07's, torque is up, if-not usually higher than HP.
I have noticed a lot of little differences w/ the 07's. Top feed 550's (blue injectors).t The ECU is different, using the 06+WRX ECU w/ 5 little plugs. Wiring is completely different. MAF sensor wire is white on the 07, instead of the pink/blue. The TPS wire is solid green on the engine, and ends up as a candyapple-red wire at ECU. The AVCS motor and sensor is all-in-one now. Air pump, w/ all it's extra crap. Turbo uses the old-school oil feed line, which is the banjo fitting from the right head to smaller banjo at turbo. Instead of the union in the oil line.
AVCS and timing maps are very aggressive, but almost all, knock under stock conditions. Knock count on logging is pretty high even baselining a bone stock STI w/ 91 octane (Denver,CO-that's all we get).

So, far, I am still fine-tuning the tunes we are doing on 07's, but it is a struggle.
That is so far my impressions.
Absubtle
CO
Ps-The front subframe, on the 07's, are only using one 12mm bolt, on the driver's side (left side). SO when installing a front mount, you gotta install a threaded insert for the right side of the subframe, so you can secure a front mount. On the older models there were 2 12mm bolts on the front of the subframe.

Yes this is a problem. The car will idle in closed loop when warm, but the symptom is that when you rev it up at all (even 300 rpm) it switches over to open loop and jumps back and forth. Didn't matter how I mapped it (with O/L C/L delay or not).

any update on a solution to this problem?

Its not a problem after I hooked back up the air pump solenoid or whatever the hell it is. I just let it dangle.

So the pump doesn't have to be doing anything, the ECU just has to think the pump is there?

The ECU just has to think that the solenoid is there (which contains the atmospheric pressure sensor). The pump only has two wires, power and ground.

There is some oddness about FBKC I have found. If you change the amount of timing pulled from the default of -1.4 degrees (I changed it to -2, step is 0.5), sometimes it uses the factory default still of -1.4 and a 0.35 step. I have also seen these mixed and matched. All in FBKC. FLKC seems to work fine with the values I set.

There are alternate FBKC step values that are only active when a number of conditions are all true. I haven't messed with it much, but it is something I can look at in the future.

Cool, I'll test it once you do.