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      12-30-2015, 06:51 PM   #1
ttuner
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E89 Z4 - VTT Stg 2+ EK build

Been collecting parts in my garage for a few months now. Just waiting on my installer to get me on the schedule. Figure i would start a thread documenting the process (hopefully everything goes smoothly)
Here's an inventory of everything going in:

  • VTT Stg 2+ EK turbos (ceramic coated, fully optioned)
  • Motiv PI
  • Fuel-It Stage 2 LPFP
  • BMW 335is clutch
  • Mfactory SMFW
  • UUC short shift kit
  • NGK O2 sensors
  • NGK plugs
  • ECS twin cone intake
  • MHD (don't have a tuner selected yet)


Also happening at the same time:
  • Water pump
  • Thermostat

pic of the haul:


pic of the car:
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      12-31-2015, 08:18 AM   #2
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Wow, hope it turns out as awesome as it sounds! Please take a lot of pictures and document the experience well.
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      01-02-2016, 01:45 PM   #3
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Nice haul ! , watching with interest !!!!
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      01-03-2016, 09:24 PM   #4
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Garage List
2018 Colorado  [0.00]
Please sell me your car.... >
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      01-04-2016, 05:59 PM   #5
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Quote:
Originally Posted by Evil///M View Post
Please sell me your car.... >
lol make me an offer? 19k miles, 2011.
Its my weekend warrior.
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      01-05-2016, 06:25 PM   #6
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Looking forward to see install pics, and dyno videos =)
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      01-08-2016, 02:45 PM   #7
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any updates ?
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      01-08-2016, 04:10 PM   #8
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Why water pump and thermostat at such low mileage? Are you putting in higher capacity pump? I'm also updating clutch due to slippage
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      01-10-2016, 04:32 PM   #9
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Quote:
Originally Posted by Bob20124 View Post
Why water pump and thermostat at such low mileage? Are you putting in higher capacity pump? I'm also updating clutch due to slippage
Cause everything is out anyway. might as well do it now.
Water pump and thermostat is cheap and no additional labor since the turbos will be out.

Side note: purchased the Motiv dual pump surge tank.
http://www.motivmotorsport.com/produ...e-tank-radium/

decided to overbuild the fuel system a bit to be on the safe side. This is the same setup that single turbo motiv Z4 is running.
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      02-16-2016, 04:43 PM   #10
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      02-16-2016, 06:52 PM   #11
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will Stage 2 LPFP be enough for these big turbos ?
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      02-17-2016, 01:14 AM   #12
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Quote:
Originally Posted by talhagursoy View Post
will Stage 2 LPFP be enough for these big turbos ?
Nope. Which is why I have the surge tank. It will be equivalent to the stage 3. Fuel it didn't make a stg 3 for the e89, so this was the next best thing
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      03-12-2016, 02:57 PM   #13
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I think I just commented on your IG dyno video lol.

Anyways curious of you upgraded your fuel lines as well.
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      03-12-2016, 03:44 PM   #14
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Quote:
Originally Posted by jts1981 View Post
I think I just commented on your IG dyno video lol.

Anyways curious of you upgraded your fuel lines as well.
we scrapped the surge tank and did an inline pump to feed the PI. The rest of the lines are stock.

Here's the results. 606whp/575lbs


[u2b]https://www.youtube.com/watch?v=4sCs1ajslt4[/u2b]





http://www.datazap.me/u/ttuner/log-1...og=0&data=4-22

http://www.datazap.me/u/ttuner/vtt-stg-2-final
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      03-12-2016, 09:12 PM   #15
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Congrats on the numbers. Now, do you realize you are triggering a Torque Limit Active ? I can only imagine what your post shifts will look like.

Last edited by BQTuning; 03-12-2016 at 09:17 PM.
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      03-12-2016, 09:47 PM   #16
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Quote:
Originally Posted by BuraQ View Post
Congrats on the numbers. Now, do you realize you are triggering a Torque Limit Active ? I can only imagine what your post shifts will look like.

nope...is that bad lol
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      03-12-2016, 11:15 PM   #17
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Quote:
Originally Posted by ttuner View Post
nope...is that bad lol
Absolutely. I can tell you now your shifts are taking a plunder, and the DME will pull load to drop your boost. Its very very very bad for the DCT. If not careful when shifting your tranny can perm slip causing the engine to over rev and boom. Same shit happened to Terry when his DCT slipped.

I am shocked how everyone on the BB site did not point that out to you.

TLM = Torque Limit Active is usually 4 but you have a 2048 spike. There is a lot of scaling in your map that the DCT does not like.

Whats going to happen when you shift the DME will reduce your load and timing and you will feel something aint right like how it use to shift.
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      03-13-2016, 08:25 AM   #18
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Quote:
Originally Posted by BuraQ View Post
Absolutely. I can tell you now your shifts are taking a plunder, and the DME will pull load to drop your boost. Its very very very bad for the DCT. If not careful when shifting your tranny can perm slip causing the engine to over rev and boom. Same shit happened to Terry when his DCT slipped.

I am shocked how everyone on the BB site did not point that out to you.

TLM = Torque Limit Active is usually 4 but you have a 2048 spike. There is a lot of scaling in your map that the DCT does not like.

Whats going to happen when you shift the DME will reduce your load and timing and you will feel something aint right like how it use to shift.
i have a 6MT.
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      03-13-2016, 02:29 PM   #19
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Quote:
Originally Posted by ttuner View Post
i have a 6MT.
Ah, I missed that, it doesn't apply to you then, thought you were DCT. Weird though, first I ever seen the TLA triggered on a 6MT.

Interesting...waiting to see how the VTT GC Turbos do before making the move on them
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      03-13-2016, 11:50 PM   #20
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Quote:
Originally Posted by BuraQ View Post
Ah, I missed that, it doesn't apply to you then, thought you were DCT. Weird though, first I ever seen the TLA triggered on a 6MT.

Interesting...waiting to see how the VTT GC Turbos do before making the move on them
I did go to a 1/2 mile event today and got hit with a ton of shift bog... Maybe related. It was annoying as hell. It pulls like a frieght train till you shift then it falls on its face
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      03-14-2016, 12:35 AM   #21
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Quote:
Originally Posted by ttuner View Post
I did go to a 1/2 mile event today and got hit with a ton of shift bog... Maybe related. It was annoying as hell. It pulls like a freight train till you shift then it falls on its face
If your map is not locked I could probably fix the shift bog but that's up to Jake if he want to work with me or not on it if he can't resolve it for you.
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      03-14-2016, 01:56 PM   #22
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Quote:
Originally Posted by ttuner View Post
I did go to a 1/2 mile event today and got hit with a ton of shift bog... Maybe related. It was annoying as hell. It pulls like a frieght train till you shift then it falls on its face
What was your trap speed?
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