cat converter p0420 p0430 misfire p0300 p0301 injector p0202 disa

[brokenbim]

Alright then. If I can get away with a flapperless disa valve, thats the plan.

Would a functioning disa make the engine any quieter?

[ard]

Originally Posted by pshovest

The resonator duct is between the MAF and throttle body, so it was causing the MAF to under report air, resulting in less fuel being injected, mixture problems, misfires, and likely the cat efficiency codes.

Got it. Yes that is an leak of metered air then. thx

[pshovest]

Originally Posted by brokenbim

.....would a functioning disa make the engine any quieter?.....

I wouldn't expect it to, particularly now that you're removed all of the moving parts.

Originally Posted by ard

Got it. Yes that is an leak of metered air then. thx

This is a perfect example of why you should NOT replace the MAF if disconnecting MAF solves driveability issues until you rule out false or unmetered air and vacuum leaks leaks.

[ard]

Originally Posted by pshovest

This is a perfect example of why you should NOT replace the MAF if disconnecting MAF solves driveability issues until you rule out false or unmetered air and vacuum leaks leaks.

Same behavior when someone reports 'it cold starts fine, but then after it warms up it runs bad'. The default (rich) maps during cold start duplicate the default maps when the maf is disconnected.


FWIW

[brokenbim]

Well finally got my bosch coil pack in the mail today.(At first went again wisdom of many on here, had to return a cheap lesser quality coil bought from amazon. These motors run hot and cheap parts probably cant take the heat.)
All the codes cleared now except cylinder 1 misfire. Moved #1 coil to #3 spot and the misfire remained at #1. The rpm also kicks down when removing all electrical plugs on top and checked the grounds as well.

So its not a vacuum leak, coil, spark plug, or driver disa valve. Sprayed and cleaned maf and throttle body along with both vanos solenoids.

We also checked compression on cylinder 1 that reached around 210. The pcv diaphragm also had resistance while blowing into but there is A LOT of suction from the oil cap when opened. Maybe too much?

Next to check tomorrow is fuel injector #1.

[brokenbim]

Well since I still have the original #1 misfire, I removed the injectors and cleaned them all. #1 was partially clogged at first and sparked somehow out of nowhere when cleaning with a battery. (Im almost sure I didnt cross wires. It still worked afterwards and now sprays properly.) I then put #1 injector in the #2 spot and put back together.

I now have a P0202 Cylinder 2 Injector Circuit Malfunction

I also still have the original misfire code on #1, but now there is a misfire code on #4 which is a new. I did another smoke test that revealed the valvetronic motor gasket in the valve cover had an air (and oil) leak.

Now I have a red CEL of a right rear tire warning for runflat out of nowhere. Im pretty sure its not punctured... The battery was almost dead so maybe that was odd computer behavior as a result... Will find out soon.

[brokenbim]

Is there injector code that needs programed or reset since I swapped #1 and #2 injector and replaced one of them with a non oem? I cant find much info on my model so probably not?

2007 X5 E70 3.0si gas

I do have the obd fusion app.

Thanks

[pshovest]

nope

[brokenbim]

So I bought a AUS Injection MP-56051 Remanufactured Fuel Injector from amazon because I was in a hurry. (It does say bmw on the injector).

Anyways after replacing, I have the same issue with the same cylinder #1 misfire and cylinder #2 Injector Circuit Malfunction codes. Also still runs the same (like crap). Im gonna take the new injector and put it in #1 cylinder like I probably should have the first time.

I also got my valvetronic motor gasket installed with no leaks so far.

[brokenbim]

So i switched the new fuel injector from #2 cylinder to the #1 cylinder and still getting P0202

I also got 2 more oem bosch coil. Tried them both and I still get the #1 cylinder misfire code.

P0202 was NOT one of my original codes. This started after fuel rail removal. (On 3rd reinstall now)

Maybe the original injector wasnt bad (from post #16)?

Still have the right rear tire runflat light on as well out of nowhere. I swear my seat feels like its heating up on its own also. I almost forgot the rear wiper was straight up when it came back from the dealer a few weeks ago. Starting to seem like a computer problem? Would it be the dme or ecu or are they the same? I see they repair them for $170 on ebay.

The newest obd report:
Diagnostic Report 2020-09-06.html.pdf

ECM-EngineControl ($7E0) P0301 PowerTrain Confirmed Cylinder 1 Misfire Detected
ECM-EngineControl ($7E0) P0202 PowerTrain Confirmed Injector Circuit/Open - Cylinder 2

Thanks