The Random E46/ZHP Question Thread

[BADCLOWN]

Anybody have info on or know somebody that has retrofitted s54 throttle bodies to an M54 and then ran the S54 BMWP (or after market equal) intake? Is this even possible?

[GeorgeH]

Anybody have info on or know somebody that has retrofitted s54 throttle bodies to an M54 and then ran the S54 BMWP (or after market equal) intake? Is this even possible?

This is of interest to me, it's be a year? since I looked into this so some of this info may be old but still could be noteworthy. I bought a RRD M54 adapter kit:
1. It does not clear the M54 oil filter housing/power steering mounts, likely will have to use an S54 OFH or remote mount the p/s reservoir.
2. It does not clear the heater pipes
3. It is VERY tight to the vanos solenoid.
4. Temp sensor on OFH does not clear plenum
5. AFAIK no one has made S54 ITB/throttle actuator work with MS45.1, I'm on MS43 and I still haven't found conclusive info that it will work.

[BADCLOWN]

Idk if the clearance would be any different but have you heard of rabid racing development? They make ITBs for m54

[GeorgeH]

RRD = Rabid Racing Development.

[BADCLOWN]

I missed that part, my bad

[GeorgeH]

I missed that part, my bad

All good, I really want to make this kit work.

I'm going to revisit it this year and see what I can make happen.

[BADCLOWN]

I’m at a point with ownership of my car that it’s either do what has been mentioned above (if it was able to work) or supercharge the thing OR sell it and find a new car to mod/spend time with

[Galapolis]

If you are looking for power you might want to consider a high compression build and the N54 manifold.

Dbilas also makes an ITB kit but it will probably have similar issues to all the other kits.

[BADCLOWN]

I don’t really want to crack the motor open at all honestly

[GeorgeH]

I’m at a point with ownership of my car that it’s either do what has been mentioned above (if it was able to work) or supercharge the thing OR sell it and find a new car to mod/spend time with

TS2 or 3... Or Syncro Design Works turbo kit.

The ITB setup I don't think is going to yield much for hp gains on a stock long block.