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Old 09-06-2012, 01:29 PM   #1
KillerBMotorsport
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Default LOW MOUNT TURBO KIT - Prototype - Killer B Motorsport

Dyno: Nightshift
Tuner: JR-Tuned
Wheel HP: 460
Wheel TQ: 390
Ambient Temp: 108
Elevation: New Jersey

Car Info
Year: 2005 STi
Engine Management: Cobb AP SD
Turbo: GTX3576-R (Tial 0.82 A/R, Modified Compressor Inlet: from 4" to 3")
Target Boost: 24psi
WasteGate: Tial MV-S (VTA)
Intercooler: Killer B Motorsport Low Mount Prototype
Fuel: Pump 93
Injectors: Injector Dynamics 1,000cc
Intake/Inlet: 3" air filter on turbo
Headers: Killer B Motorsport Low Mount Prototype
Uppipe: Killer B Motorsport Low Mount Prototype
Downpipe: Killer B Motorsport Low Mount Prototype - Catted
Radiator: Killer B Motorsport Low Mount Prototype
CBE: MadDad Whisper
Other: Stock heads, shortblock with Sleeves, Copper O-Rings, Manley H-Tuff Rods, Manley pistons, Manley Billet Crank Tial Q BOV, stock size blow thru MAF, Omni 3-bar, Crawford A/O Sperator, Mocal Scavenge Pump. Killer B Motorsport Low Mount Prototype Turbo Sump, 340 Fuel pump, Aeromotive Pressure Reg., Killer B Motorsport Oil Pan, Pickup and Baffle.

This was some testing of our Low Mount Turbo Prototype Project. Previous testing (GTX3071-R) netted 401whp with a 0.82 A/R housing with a spool reduction of ~150RPMs with power taper ~7,500RPMs (too high for stock heads IMO). This was the first part of testing on the second revision.

Testing from 6-3-13









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Last edited by KillerBMotorsport; 08-30-2013 at 07:39 AM.
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Old 09-06-2012, 01:59 PM   #2
Got Boost?
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thats pretty sweet! always nice to see something new

I am really interested on what this could do with some good fuel

Last edited by Got Boost?; 09-06-2012 at 02:59 PM.
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Old 09-06-2012, 02:36 PM   #3
Irv Weissmanhowerton
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reserved, ^^ what he said
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Old 09-06-2012, 02:56 PM   #4
WhatTurboLag?
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Badass. I talked with you guys a while ago about this kit
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Old 09-06-2012, 02:58 PM   #5
fourmicah
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Very Nice, Almost what Subaru is doing now with the new set up. Interested to see how this one will work out.
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Old 09-06-2012, 03:35 PM   #6
Steve.804
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Wow what a nice looking powerband. The spool is fantastic, wish it still had the .82a/r though...
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Old 09-06-2012, 04:18 PM   #7
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Do you have any more pictures? Maybe installed without the front bumper or something in that nature? I'm mostly curious about the fitment, looks good.
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Old 09-06-2012, 04:37 PM   #8
xsblack
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Very cool, I can't wait to see what the GTX3576R will do w/ your low mount kit.

Any reason you decided to keep it single scroll?

Also as stated above, got any pics with the front bumper off?
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Old 09-06-2012, 04:40 PM   #9
207STi
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I second the need for pictures without the front bumper.
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Old 09-06-2012, 05:28 PM   #10
stretchedk7
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Will the bigger turbos still fit? And if so do you think the weight will cause any issues? I'd part with my kit for something like this.
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Old 09-06-2012, 05:53 PM   #11
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Quote:
Originally Posted by Fooliojesus View Post
I second the need for pictures without the front bumper.
Yeah, it's like being told there are nude pictures of your favorite/hottest actor. You find the pictures but they are at weird angles or a close up for the nipple. It still gets you excited, not as exciting as seeing the whole package. This turbo kit is hot, now show us a full frontal.
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Old 09-06-2012, 06:01 PM   #12
Electioneer
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How is the intercooler setup?
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Old 09-06-2012, 06:48 PM   #13
KillerBMotorsport
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Guys, thanks so much for the kind words!

The goal of this kit is to provide OEM responsiveness (+200wtq by 3,000 RPMs, with the pull starting at 2,500RPMs) but provide significantly more power. Making big power is good fun, but I really didn't want to take a hit in streetability, because I want to DRIVE it everyday and not have to rev it to the roof to make the power... And track competitiveness and reliability is important as many of us often find outselves at a motorsports events on the weekends

Here is a plot with the 0.82 A/R, showing power going a bit higher in the revs than I'd like for OEM heads, but we were curious when it started to fall.



The car drove fairly well, but the tune needed improvement, as the plot shows, and I really wanted to go Speed Density as well as make a few other small changes. So I swapped the housing and headed to EFI Logics.

Worked with Garrett on this part. According to some simulations and actually testing they had previously done, this housing 'adapter' actually improves surge characteristics and has no negative effects on power capability. So far, we can't tell any difference.



Here the scavenge pump. Took a bit to get it sorted out, but it works flawlessly now
Bracket mounts to OEM tapped holes and is made from 1/8" thick stainless.



Mock up bumper beam shown here. The 'real' one is 1" square solid steel. Intercooler end tanks are just tacked together here and the the radiator placement tested. Extremely close to the end fitment.



Real bumper beam shown here with bumper mounting points and intercooler mounting. Pluming from compressor outlet to intercooler inlet is ~9" total, so shorter and with fewer bends than an OEM TMIC.



Exhaust gasses perfectly straight in and straight out. This gives the absolute maximum potential turbine efficiency. According to Garrett anyway, who am I to argue



Guys thanks again! As always, the comments, questions and concerns are always welcome. Since someday this may be an available product, we want to make sure we don't miss anything
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Old 09-06-2012, 07:04 PM   #14
KillerBMotorsport
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Quote:
Originally Posted by xsblack View Post
Very cool, I can't wait to see what the GTX3576R will do w/ your low mount kit.

Any reason you decided to keep it single scroll?

Also as stated above, got any pics with the front bumper off?
I didn't feel the added cost/complexity of TS was worth it. It would also make the packaging much more difficult than it already is. This kit is essentially bolt on, no fabrication required

Quote:
Originally Posted by stretchedk7 View Post
Will the bigger turbos still fit? And if so do you think the weight will cause any issues? I'd part with my kit for something like this.
Garrett talked me into going with the GTX3576-R next based on the balance and fact that extrnally the dimensions are the same. We'll see. If anyone wnted to go bigger turbo, it should be much easier on a GR since there is more room and going that route on a GD would just mean some minor fab/hammer work.

Quote:
Originally Posted by Spike_916 View Post
Yeah, it's like being told there are nude pictures of your favorite/hottest actor. You find the pictures but they are at weird angles or a close up for the nipple. It still gets you excited, not as exciting as seeing the whole package. This turbo kit is hot, now show us a full frontal.
Thanks and I take no offence, I'm a terrible photographer!

Quote:
Originally Posted by Electioneer View Post
How is the intercooler setup?
I researched and shopped for cores for a while as I'm not one to cheap out. The core dimensions are 10.5" x 18" x 4.5" The custom grill insert moves the plate out of the way and closes off the edges to make sure air goes through, not around. So far temps have been in check even after several loaded pulls. On the street is stays cool, cool enough that I have stopped monitoring intake temps.
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Old 09-06-2012, 07:07 PM   #15
Badler
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Have any pictures of the engine/coldside piping? Sweet kit!!
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Old 09-06-2012, 07:29 PM   #16
KillerBMotorsport
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^ Here's an old CAD sketch and a top pic of the I/C to throttle body. From compressor to I/C it's compressor outlet, silicone 90, coupler, silicone 45 and intercooler inlet. That's all



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Old 09-06-2012, 07:31 PM   #17
KillerBMotorsport
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Oh and to answer a few future questions.. There is no turbo coolant reservoir since it's no longer needed. There is a vacuum manifold coming off the turbo inlet so there is still a vacuum source for the Crawford A/O seperator, Fuel purge, etc.
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Old 09-06-2012, 07:59 PM   #18
bmw325ix
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this looks awesome, is the down pipe 3inch?

Last edited by bmw325ix; 09-06-2012 at 08:05 PM.
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Old 09-06-2012, 08:06 PM   #19
Spike_916
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This is seriously an awesome setup. I believe this question has been raised, how big of a turbo can you fit within this location and what about twin scroll?
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Old 09-06-2012, 08:21 PM   #20
KillerBMotorsport
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Quote:
Originally Posted by bmw325ix View Post
this looks awesome, is the down pipe 3inch?
Yes

Quote:
Originally Posted by Spike_916 View Post
This is seriously an awesome setup. I believe this question has been raised, how big of a turbo can you fit within this location and what about twin scroll?
Thanks for the kind words! We'll be trying a GTX3576 next and that should fit too so we're told.

It wouldn't take a lot to go BIG if you you wanted to do some fab work on your own. Right now we want to stay as 'bolt-on' as possible.
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Old 09-06-2012, 09:38 PM   #21
WRX2EVOX
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Will your kit include the IC/Radiator/scavenge pump? Or just turbo and piping? Any projected release dates/pricing?
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Old 09-06-2012, 10:33 PM   #22
Spike_916
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Quote:
Originally Posted by KillerBMotorsport View Post
Yes



Thanks for the kind words! We'll be trying a GTX3576 next and that should fit too so we're told.

It wouldn't take a lot to go BIG if you you wanted to do some fab work on your own. Right now we want to stay as 'bolt-on' as possible.
What about the EFR8374 TS? If this kit works I don't mind being a guinea pig... Work is almost done and I love your products.

http://forums.nasioc.com/forums/show....php?t=2081496
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Old 09-06-2012, 10:52 PM   #23
PhatBotti Tuning TKR
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might want to think about putting some metal rings on the silicone inlet to prevent collapsing...ala APS
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Old 09-06-2012, 11:55 PM   #24
KillerBMotorsport
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Quote:
Originally Posted by WRX2EVOX View Post
Will your kit include the IC/Radiator/scavenge pump? Or just turbo and piping? Any projected release dates/pricing?
Header, up-pipe, down-pipe, WG dump tube (recirc), intercooler, radiator, bumper beam and some brackets. I'm not going to be reselling the off-the-shelf products as they sell every other week with a new vendor having the 'best prices'. Plus eveyton has their own preferences and budget for things like hoses, clamps, etc...

Quote:
Originally Posted by Spike_916 View Post
What about the EFR8374 TS? If this kit works I don't mind being a guinea pig... Work is almost done and I love your products.
Sorry, we decided on the Garrett products. They are a tried and true product and products/parts can be found virtually anywhere at anytime. I'm just not on the EFR bandwagon. Plus there's no freaking way those huge things will fit, lol.


Quote:
Originally Posted by PhatBotti Tuning TKR View Post
might want to think about putting some metal rings on the silicone inlet to prevent collapsing...ala APS
I swapped out the cheapo hose (although we never had problems with collapse) for a for the nicer made in the USA Turbo Logic stuff. Their stuff is better than anything else I've seen and we're going to use this stuff on everything from now on, although it is pricey.

With the cheapo stuff on there we never saw or had any syptoms of collapse in the year we drove it. If it was smaller than 3" I'd be concerned. Plus the legs are pretty short so it would take a boatload of vacuum to make it collapse.
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Old 09-07-2012, 12:10 AM   #25
Bariga
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and EFR not available in v-band!

Killer-B Thank you for developing products for our cars!
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