[E90ROXS]

Hey Guys! I started installing my Bigboost turbo kit last week. Here are some of the pictures. Now this kit is somewhat hard to install. You will have to play puzzle to get things connected correctly. Removing the oil line and coolant line from the engine block is a pain in the ass. You will have to wiggle the nozzle and pull at the same time. I'll add more pictures as I make progress.









Old turbo is completely out!


Bigboost turbo and stock turbo side by side comparison


Big dog is mounted!

[les anderson]

Great pics, thanks for sharing! Subscribed!

[paimon.soror]

that inlet size tho lol

[///Madgreek1]

Nice! Replacing my engine currently and thought about going big boost while the engine is out, but I'm doing a vtt gc instead since it's my daily and I want to keep myself outta too much trouble lol. Look forward to seeing the end result though 👍

[mike@x-ph.com]

Sub'd

[E90ROXS]

By the way I got this kit from Mike @ x-ph! Contact him for any mods you need.

[mike@x-ph.com]

Originally Posted by E90ROXS

By the way I got this kit from Mike @ x-ph! Contact him for any mods you need.

Thank you

[E90ROXS]

I got the boost controller hooked up yesterday.

I'm using add-a-circuit fuse tap to get the power for the main display unit. This is cleaner than tapping into an existing wire.

You need to use a 5v fuse for the controller not 10v like the one shown in the picture.






I will have to move the solenoid away from the turbo manifold as it's putting out too much heat.

[jackstrath]

route it to the other side of your air filter heat shield if it is sold enough ?

[B50AteYourRide]

Are you bypassing the stock electronic boost control entirely?
I can’t figure out how the boost is controlled with the external wastegate and the OEM controls.

[E90ROXS]

Originally Posted by B50AteYourRide

Are you bypassing the stock electronic boost control entirely?
I can’t figure out how the boost is controlled with the external wastegate and the OEM controls.

yes boost is controlled by the ebc.

[B50AteYourRide]

Gotcha, thanks.

It seems like you are re-mounting the black plastic piece that controlled the internal wastegate on the OEM turbo? Why is that?

Looks like a badass kit.

[E90ROXS]

Originally Posted by B50AteYourRide

Gotcha, thanks.

It seems like you are re-mounting the black plastic piece that controlled the internal wastegate on the OEM turbo? Why is that?

Looks like a badass kit.

It’s the internal wg actuator. It’s there to
Keep the flap closed.

[E90ROXS]

Originally Posted by jackstrath

route it to the other side of your air filter heat shield if it is sold enough ?

I can route it to the intake manifold side

[B50AteYourRide]

Originally Posted by E90ROXS

It’s the internal wg actuator. It’s there to
Keep the flap closed.

Thanks

So the kit comes with a turbo that has an internal wastegate, in addition to using the external wastegate mounted to the manifold?
That’s where I’m not getting it. Sounds like the internal wastegate of the new turbo isn’t being used.

[kern417]

Originally Posted by B50AteYourRide

Thanks

So the kit comes with a turbo that has an internal wastegate, in addition to using the external wastegate mounted to the manifold?
That’s where I’m not getting it. Sounds like the internal wastegate of the new turbo isn’t being used.

From what I've read, you at least have to have the wastegate plugged in for the car to run. Then you can adjust the tune to keep it closed all the time, or even open in certain situations to support higher boost levels.

It was similar on my previous car. I had an external EBC but still had to keep the OEM boost control stuff plugged in to keep the car from randomly going into limp mode.

[jackstrath]

Originally Posted by B50AteYourRide

Thanks

So the kit comes with a turbo that has an internal wastegate, in addition to using the external wastegate mounted to the manifold?
That’s where I’m not getting it. Sounds like the internal wastegate of the new turbo isn’t being used.

I did notice that, makes you wonder why even spec a exhaust housing with a wastegate option seems an odd thing to do seeing as youll get better boost control using the external gate at higher boost levels.

[B50AteYourRide]

Originally Posted by kern417

From what I've read, you at least have to have the wastegate plugged in for the car to run. Then you can adjust the tune to keep it closed all the time, or even open in certain situations to support higher boost levels.

It was similar on my previous car. I had an external EBC but still had to keep the OEM boost control stuff plugged in to keep the car from randomly going into limp mode.

I can see where unplugging the electronic wastegate actuator would confuse the DME and cause all sorts of problems; makes sense. I’m familiar with the traditional mechanical spring / ECU controlled bleed off valve situation. It definitely made the transition to EWG easier and worked pretty much as well.
They don’t make it easy this way.

[lonewolfB58]

I’m planning on installing a Big Boost Turbo but quick question! What was the process of filling the oil and coolant back up after the turbo install? I have this step by step page for disassemble/reassemble of a stock B58 Turbo but I think its saying something about using a vacuum filler device to fill the coolant back properly, Can you confirm that process?

[kern417]

Originally Posted by lonewolfB58

I’m planning on installing a Big Boost Turbo but quick question! What was the process of filling the oil and coolant back up after the turbo install? I have this step by step page for disassemble/reassemble of a stock B58 Turbo but I think its saying something about using a vacuum filler device to fill the coolant back properly, Can you confirm that process?

The vacuum fill method is used by dealers to speed up the process. It forces coolant past the thermostat so it fills up and bleeds all in one go. If you do the normal method of letting the car get up to temp to get all the air out, it'll work the same way. And of course keep an eye on your coolant levels over a few days and top off if it drops.

[baldeagleman]

What are you using for a fueling setup? Straight 93, meth, or e85? I am exploring options for pump gas only and am wondering what setup is best bang/buck. I've been looking at bigboost, pure800, and the vtt gc turbos and wondering what would be the best of those on 93 pump only.

[E90ROXS]

I ran into a problem when the guy that was helping me busted one of the stud holes on the block. Luckily there is a local BMW performance shop. The shop name is Silicon Valley Bimmers. These guys will work on anything you want to them to do. Check them out if you are local.