M50NV Turbo Tune Options?

[Rowleym]

You're going to need some explanation there. The crank sensor plugs right in, fuel injectors need light modification, the TPS should plug in or have already been modified, and I think the temp sensors plug in.

I think it might work. He also said this
"It depends on what version of MS you run. If you're on an M20 now or MS2 or earlier, it's batch fire so you only need a crank, tps, coolant temp, and air temp signals + fuel injectors & spark to fire the motor. Also the main & fuel pump relays but that's more or less independent of the motor as is the wideband. If you use the e36 harness, there are a LOT of unused wires."

Im fairly optimistic. Im Using as little of the wiring harness that i can in the first place.

[GunMetalGrey]

If you come over today bring your m20 harness and we will see if it has the proper connectors, I don't think it will and I don't quite see the point.
Either way, good write up.

[Rowleym]

Yea I just found that today. Should definitely help me out. Might be trying to use a m20 engine harness though...

[GunMetalGrey]

Lol, no kidding on the jack!
http://forums.bimmerforums.com/forum...d.php?t=879273
So if I can make sense of this after some reading I think i can get it lol

[SwiftE30]

Okay so I have an m20 currently, and I am going turbo. I have the DIYPNP, and it connects to a 55 pin Bosch harness. I might be swapping a m50nv in soon because I got a crazy deal on it. Can I use that harness on the m50? Thanks. Sorry for the thread jack man. Haha

Horrible thread jack, jeez! Check e30tech out, all the turbo guys are over there. But i'm sure you have already. Once you get into the turbo world it'll all make more sense.

[Cyrix2k]

why? Because it makes the cam timing "hotter"???

because you can adjust the cam timing to spool the turbo earlier. The vanos motors have milder cams from the factory which is the only reason they don't produce more power than the NV in stock form. The only downsides to vanos are the larger physical dimensions, extra tuning work, and the vanos seals that need occasional refreshing.

[Good & Tight]

I dont think vanos is really needed for boost.. I purposely bought a m50nv car

If you want a broader and higher power band vanos is the way to go.

[5Toes]

why? Because it makes the cam timing "hotter"???

[Cyrix2k]

I dont think vanos is really needed for boost.. I purposely bought a m50nv car

it's not needed and it's easier to tune without vanos, but vanos is better for boost.

[5Toes]

I dont think vanos is really needed for boost.. I purposely bought a m50nv car

[emmanuel.dlc]

the valve stems are about where the differences end. It's even possible to swap the vanos unit to a NV head and to delete vanos on a vanos head.

correct, that and the double spring on the NV valves. i upconverted my NV to 413 and i am using my nv head, swaped cams, front cam cover with vanos unit and a vanos valve cover and that's it.

[Rowleym]

Quick question. Is the spacing of the exhaust ports the same from the m50 to the m20?

[Cyrix2k]

Yes, you can with some wiring.

[Rowleym]

Question. Could I possibly get the m50 harness, cut the connector off, and use my 55 pin connector that I have for my m20?

[Cyrix2k]

Thanks for the info man. I'm excited for this. You have any good info on a super cheap manifold setup? Of course it has to work well. Why not just do a cast manifold? I can make custom motor mounts if that is an issue..

IMO, it's hard to beat the blunttech manifold. I paid $540 shipped for mine brand new. He even includes the gaskets and turbo hardware. You'll sacrifice fitment and quality at lower prices. When people say to do it right or do it over, that's really the truth.

Non vanos heads have 1mm thicker valve stems and less to go wrong.

the valve stems are about where the differences end. It's even possible to swap the vanos unit to a NV head and to delete vanos on a vanos head.