No Oomph.

[TECN1K]

Intermittent loss of torque. No codes, stored or shadowed. Truck goes flat below 3000rpms, acceleration is poor. Vanos has been rebuilt within the past 10K miles. I've replaced both intake and exhaust CAM sensors.

Again, this is intermittent. Some days she runs like a raped ape, plenty of seat of the pants get up and go. It's very noticeable.

I'm thinking MAF - BavAuto has the VDO/Siemens for about 200 bucks. These don't last forever - and I'm looking at my original one right now. Cleaned it with CRC but really no difference.


Worst case - busted cat internals, blocking flow? Yeesh.

[jopecasa]

Possibly gasoline brand and Fuel filter?

[TECN1K]

Just did the filter - Been up and down the east coast fueling up everywhere, so no 1 particular brand, always 92+ octane.

[upallnight]

Check the DISA Valve.

[TECN1K]

Brand new OEM german made DISA.

[upallnight]

Originally Posted by TECN1K

Brand new OEM german made DISA.

I didn't ask if the DISA valve was old or new. The flap on the DISA valve could be sticking and the whole ideal behind the DISA valve is change the length of the intake runner and thus the oomph of the engine.

Just because it is brand new doesn't mean that it is not the problem.

Another item to check might be the ICV. Check to see if it rattle when you shake it.

[TECN1K]

Originally Posted by upallnight

I didn't ask if the DISA valve was old or new. The flap on the DISA valve could be sticking and the whole ideal behind the DISA valve is change the length of the intake runner and thus the oomph of the engine.

Just because it is band new doesn't mean that that it is not the problem.

Another item to check might be the ICV. Check to see if it rattle when you shake it.

Makes sense. Sticking, like inside the intake due to crud build up? Or sticking from an actual manufacture defect. How would I even diagnose that?

Originally Posted by Ricky Bobby

Is the AFE filter oiled or dry?

It's oiled so much it's dripping.

lol, nah it's the dry one, I know where you're goin with that.

[upallnight]

Originally Posted by TECN1K

Makes sense. Sticking, like inside the intake due to crud build up? Or sticking from an actual manufacture defect. How would I even diagnose that?



It's oiled so much it's dripping.

lol, nah it's the dry one, I know where you're goin with that.

You can remove the DISA valve and move the flap slowly. Don't rotate the flap and let it snap back. Do you feel any resistance throughout the flap as you rotate it?

[TECN1K]

Originally Posted by upallnight

You can remove the DISA valve and move the flap slowly. Don't rotate the flap and let it snap back. Do you feel any resistance throughout the flap as you rotate it?

Holy shit.

3 months old from ECS.

Oh you said don't let it snap back? Well, it can't get more broke.

https://youtu.be/iJm6sImlFd8

^ Video

PS putting 12V 10A to it does nothing.

[TECN1K]

Cleared ALL my adaptations.. it's been good for the past few days, pulls nice and hard around town. I need to start logging and comparing when shit acts up I figure.

Anyone have input on BMWLogger?

BMWLogger – BimmerSoftware.com Don't really want to drop $60 on a logger if it's junk. The demo only lets you read codes.