M30 OEM Turbo project

[ThatOneEuroE30]

Paul muskopf makes m106 tial waste gate adapters hit him up on facebook or slammin can get you in touch with him. I highly recommend you do the tail adapter.

[2mAn]

not bad for 7psi!

[CorvallisBMW]

M30 OEM Turbo project

Right, time for goodies! But first, a small disclaimer. We had problems with the factory wastegate as it would not allow any boost levels above ~7psi. I've been doing some research over on the FI section of mye28 and the e23 section of bf.c, and the factory wastegate should be capable of putting out roughly 15psi, which means mine is likely defective. We tried two different manual boost controllers and had the same result. So sadly my boost was limited and I couldn't get to the 10psi goal I had in mind. I'll either need to find another m106 wastegate, find a way to adapt and aftermarket model, or pick up one of the Miller custom pieces.

The stock tune that ships with the whodwho MS2 box is damn good. The tuner ended up pulling about 3 degrees of timing out to be safe (there was zero decrease in HP, meaning it was already on the plateau just before knock would have set in) and adding roughly 10% more fuel across the board to get AFRs down around 12.


Final numbers were 250whp and 280wtq. This is on a Dyno Dynamics 4WD dyno, totally uncorrected for driveline losses. It's obvious this is old-school turbo tech, look at that lag!! :p


Here's the AFR and boost graph. Note the boost peaks around 7.5psi before tapering off to 6psi. All indications point towards a faulty wastegate, likely with a torn diaphragm.



I really wish I had a video of a full pull, but since I was assisting the tech with the boost issue, I didn't get one. You'll have to settle for a partial pull :)

https://vimeo.com/164432129

[Bearmw]

Bear approved.

[kamotors]

very nice:)

[Kershaw]

I hope your numbers are high and your intake temps low

Is this the turbo prayer?

That looks really good and very OEM.

[ThatOneEuroE30]

If your not gonna do burn out vid at least a dyno vid i cant even deal anymore.... must hear this beast....

[ZenitramNaes]

That box is very nice. Good work on it.

Sent from my SM-G920V using Tapatalk

[cleanasse30]

MMMM dyno time! Who is tuning your car?

Also very nice work on the install, it looks very OEM

[bradnic]

^ this

[2mAn]

Looking good! I hope your numbers are high and your intake temps low

[CorvallisBMW]

M30 OEM Turbo project

I finally found an air box that fits! Sort of... It's a 540/740 M62 airbox. Definitely big enough to flow for my engine and the inlet/outlet are in the right locations and the right size. But I still had to do a bit of modification.

First the bottom had to be cut near the wheel well since I'm installing it roughly 45* rotated from its normal position


Then I laid down two layers of glass and resin. It doesn't have to be super strong, just hold its shape.



And installed


Also, a little teaser.....

[CorvallisBMW]

Burnout video?

Sure, got some bottlecaps you want to give me? :P

[ThatOneEuroE30]

Burnout video?

this....

[AndrewBird]

Burnout video?