EGR/SAI Delete

[Urluz3n]

Has anyone deleted or removed the secondary air pump that pumps air into the cats when starting? I wonder what kind of CEL I will get? Does the forward or rear O2 sensors send the error? Or is there an error? I am told deleting it will save you about 7 lbs. an clean up the engine compartment.

Thank You
Paul

[Z4inAZ]

I also wonder what kind of CEL you would get if any. On older cars you could just remove it. All it does is blow extra air into the engine for the first couple minutes to help emissions.

EGR is something different though... thats exhaust gas recirculation and is a different way to help emissions. The M54 has both and though both can be deleted, generally only the secondary air pump is.

[seank]

Secondary Air Pump Post. To be tested soon.

http://www.zpost.com/forums/showthre...ghlight=andrew

[Urluz3n]

Well I did the delete today. And after the first running around town, no check engine light. Somewhere I read that the SAI doesn't doesn't activate or the pump does not turn on until the ambient temperature Is below 50°. Since I keep the car in the garage even during the winter my ambient temperature may never drop below 50°.

[ZStig]

What did you do with the electrical plug going to the pump? My kit arrives tomorrow

[seank]

Originally Posted by Urluz3n

Well I did the delete today. And after the first running around town, no check engine light. Somewhere I read that the SAI doesn't doesn't activate or the pump does not turn on until the ambient temperature Is below 50°. Since I keep the car in the garage even during the winter my ambient temperature may never drop below 50°.

Mine is garaged and at 60 at night. My afr gauge says it kicks on.

[Beedub]

my SAP unit comes on every start no-matter the temps...

[Urluz3n]

Well I took the car to work and still no CEL. I am hoping this is a sign that it won't come on. That part of the engine looks better with out the pump and its hose. I am tempted to remove the heat shield so the header is more visible.

[ZStig]

Originally Posted by Urluz3n

Well I took the car to work and still no CEL. I am hoping this is a sign that it won't come on. That part of the engine looks better with out the pump and its hose. I am tempted to remove the heat shield so the header is more visible.

and increase your underhood temps? thats a ricer mod

[Urluz3n]

To be honest. I can't see that the little heat shield can't do much. What's wrong showing off the headers? I take a lot of pride in my car!

Besides we all have a little ricer in us. Hell most of my carbon fiber accessories is from CHINA!!

[Urluz3n]

Does it look naked without the SAI/EGR?

[ZStig]

throw a turbo in there. hahaah

no it looks fine. I think you can remove the bracket that you left in there

[seank]

Originally Posted by Urluz3n

Does it look naked without the SAI/EGR?

You definitely have a place to warm your lunch.

[Incompatible]

A flux capacitor would fit nicely.

[ZStig]

actually valid question. we could put something useful there...

[Urluz3n]

Actually the mount is welded in place. I already have an idea as to what I want to put in that area. I will see if I can come up with a mount for an oil catch can, with a pleasing appearance.

[Beedub]

it would be a nice pleace to mount a catch can actually.... especially if not re-circing.

[ZStig]

Originally Posted by Beedub

it would be a nice pleace to mount a catch can actually.... especially if not re-circing.

actually yeah, I saw that its where that vt1-445kit seller has in the pics. definitely a great spot

[rkstar9]

interesting the 2.5i has the SAP mount next to the windshield wiper fluid.

[StickMon]

Yesterday I thought this was a frivolous mod.
Today I put on my VT motor mounts, and the SAI was TOTALLY in my way.
I didn't have a new gasket, so I couldn't remove the valve, so I couldn't get the heat shields out, so I had to use a U-joint to get the top right motor mount nut off.
And when it broke loose I lost the skin off 2 knuckles on the sharp friggin' cheese grater on top of the pump.

THE SAI MUST DIE!

[seank]

Originally Posted by StickMon

Yesterday I thought this was a frivolous mod.
Today I put on my VT motor mounts, and the SAI was TOTALLY in my way.
I didn't have a new gasket, so I couldn't remove the valve, so I couldn't get the heat shields out, so I had to use a U-joint to get the top right motor mount nut off.
And when it broke loose I lost the skin off 2 knuckles on the sharp friggin' cheese grater on top of the pump.

THE SAI MUST DIE!

That's nuts.

[pal]

Removed the SAI on my Z4MC today and scanned the car for Readiness and Codes before removal and then after a short drive post removal.

There is a Readiness check for this pump so I suspect that once the ECU tries to turn it on (cold day possibly), this check will fail.

Sunday,18,August,2013,12:46:17:10376
VCDS Release 11.11.6: Generic OBD2
Mode 01 - PID 01 : Readiness -- Address 12

Number of DTCs stored: 0 -- MIL Status: MIL OFF
Misfire monitoring: Passed
Fuel System: Passed
Comprehensive Components: Passed
Catalyst monitoring: Passed
Heated catalyst monitoring: Not installed.
Evaporative system monitoring: Passed
Secondary air system monitoring: Passed
A/C system refrigerant monitoring: Not installed.
Oxygen sensor monitoring: Passed
Oxygen sensor heater monitoring: Passed
Exhaust Gas Recirculation: Not installed.


Post drive there was one Pending DTC below -

Sunday,18,August,2013,14:02:35:10376
VCDS Release 11.11.6: Generic OBD2
Mode 07: Pending emission related fault codes

Address 12 (Engine): 1 Fault Found:
P0411 - Secondary Air Injection System: Incorrect Flow Detected