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Aftermarket superchargers & turbos as well as tuning for stock BMW turbos (N54 motor - 135i / 335i / 535i). Force-fed discussion to make your car go faster

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  #1  
Old 05-25-2017, 12:08 PM
BoostedE34 BoostedE34 is offline
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Location: Perth, Western Australia
 
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Mein Auto: 1989 E34 535i Turbo
Megasquirt 3 Pro E34 M30B35 Turbo Build With 4hp22eh

Hi all,

I thought i would share my turbo build with everyone. When i started the build it was very easy to get side tracked and bounce around in circles due to the combinations that had worked and hadn't. I wanted to do a cheap build to have some fun in but then realised that reliable performance isn't cheap.

COMPLETED PARTS AND HARDWARE

*Turbo - GT35 eBay
*Exhaust manifold - Bought off eBay
*Injectors - Deka 60lb
*Oil feed - Picked up using a "t" fitting off the back of the head where the factory sender is. I made my own braided hose for all hoses with bits bought at the local performance shop.
*Oil drain - Drilled and tapped block (together i might add, plenty of grease and wiping so the shavings stick)
*Coolant hoses for turbo - used both ports at the thermostat housing area (see pics)
*Megasquirt 3 Pro EVO ECU
*Wideband AFR and EBC
*Auto Trans 4HP22EH with manual controller
*Spal 16inch thermo.
*Stock FPR
*3" universal intercooler kit - eBay $220
*Walbro 255lpm in-tank pump
*6 Ls1 coil packs
*Tial style 46mm BOV eBay $60 (same as turbo, all the same and works killer.)
*Sequencial BOV with adapter pipe HKS copy $50, there is a vid on youtube of them being tested, Interesting comparison.
*Stock throttle body removed from the front, blanked and fitted to the back (just a hole saw did the trick).
* Stock bottom end, stock head Gasket
*Currently street testing, will need a back up plan for trans swap but seems fine for now, manual gear selection, shifts hard and no slip.
*Currently @ 14 psi bit high for my liking but whatever, mls gasket and ARP studs to come also.
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Last edited by BoostedE34; 07-06-2017 at 04:32 PM. Reason: COMPLETED
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  #2  
Old 09-29-2017, 01:37 PM
Jai_M30B35 Jai_M30B35 is offline
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Location: Nairobi
 
Join Date: Sep 2017
Posts: 2
Mein Auto: e34 m30b35, F10 n52b30
Following keenly.

I am also in the process of turbocharging my e34 m30b35. So far i have already bought the following items Holset hx 40w turbo, top mount turbo manifold from team-2-fast, ebay intercooler kit, ARP head studs, External wastegate (TIAL 44mm), Walbro 255lph high flow fuel pump, 440cc fuel injectors, oil feed+return kit from ebay, adjustable fuel pressure regulator, manual boost controller, BOV and a set of gauges (almost 4-5).

The work hasn't started yet but will begin towards the end of October when I start my annual leave. Nonetheless, I have been thinking through the whole set up and had one or two issues unresolved in my head.

1. First was how to connect the pipes from the inter cooler to the throttle body - given the throttle body positioning. I guess i got the solution after reading your thread above, will also remove Stock throttle body from the front, block it out and fit to the back.
2. Secondly, my car is a RHD thus i am still figuring out the best way to deal with the down pipe given the steering wheel shaft positioning.
2. Thirdly, Engine management - so far have settled for Millers WAR chip.

Any advice will be highly appreciated.
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  #3  
Old 10-23-2017, 12:10 AM
BoostedE34 BoostedE34 is offline
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Location: Perth, Western Australia
 
Join Date: Sep 2016
Posts: 12
Mein Auto: 1989 E34 535i Turbo
Mine is also RHD, I made a hole in the wheel arch and ran exhaust down the inside of the guard.
Depends what you want out of it at the end of your build. I went standalone because it isn't going to stop here. It also has engine protection and various other nice features that suit me.
I have just removed the 4hp22 and installed a built Ford C4 transmission, original bell housing with adapter to transmission and custom torque converter. Made a huge amount of difference. Now I'm looking at MLS gasket with ARP studs, e85 fuel and a new turbo with 20 psi.
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  #4  
Old 10-26-2017, 11:20 AM
Jai_M30B35 Jai_M30B35 is offline
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Location: Nairobi
 
Join Date: Sep 2017
Posts: 2
Mein Auto: e34 m30b35, F10 n52b30
Thanks bro. got everything in place except an ecu. I wanted to use Megasquirt ecu but the price on ebay is quite high. i hope i can get a used one that someone wants to dispose cheaply
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  #5  
Old 12-20-2017, 02:15 PM
BoostedE34 BoostedE34 is offline
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Location: Perth, Western Australia
 
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Mein Auto: 1989 E34 535i Turbo
So I have now successfully installed a Ford C4 transmission to counteract the weakness of the 4hp. I am really impressed with it all now and want to take it further. Anyone know of head upgrades? What power can they withstand?
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  #6  
Old 01-16-2018, 05:54 PM
yura8 yura8 is offline
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Location: Kyiv, Ukraine
 
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Posts: 3
Mein Auto: E34, 535i
Quote:
Originally Posted by BoostedE34 View Post
So I have now successfully installed a Ford C4 transmission to counteract the weakness of the 4hp. I am really impressed with it all now and want to take it further. Anyone know of head upgrades? What power can they withstand?
why did you replace transmission? Mega Shift can control almost all transmissions
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  #7  
Old 02-23-2018, 12:02 AM
BoostedE34 BoostedE34 is offline
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Location: Perth, Western Australia
 
Join Date: Sep 2016
Posts: 12
Mein Auto: 1989 E34 535i Turbo
It wasn't a question of control, I had a unit on it that was making it a full manual but eventually it started slipping when I started to make power.

There was also future plans in mind. 4hp regardless of control won't support 800+hp
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