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  1. #1
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    Custom Single Turbo (need advice)

    Well guys its about that time for me to start ordering parts for my custom single build.

    Turbo I plan on using is a Garrett GT4088R ( what you guys think? )

    My goal is 600-700whp

    What wastegate could I run with this turbo?

    Thanks

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    Get a GTX or precision of you're going to spend that much. GTX35r or PTE 6262 would be more than enough for your whp range.

    44mm wastegate would be good too. Depends on manifold as well if it's single or twin scroll etc.
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    Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
    Get a GTX or precision of you're going to spend that much. GTX35r or PTE 6262 would be more than enough for your whp range.

    44mm wastegate would be good too. Depends on manifold as well if it's single or twin scroll etc.
    I thought the GTX35r was only good up to 550-600hp?

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    Click here to enlarge Originally Posted by Linracing Click here to enlarge
    I thought the GTX35r was only good up to 550-600hp?
    Nope 750 crank!

    http://www.bptstore.com/Garrett-GTX3...er-_p_117.html
    Burger Motorsports
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    Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
    gotta update your picture dude

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    Click here to enlarge Originally Posted by bmwtek Click here to enlarge
    gotta update your picture dude
    Haha, the avatar will have to stay. In respect for my GTI, I will always love her. In a couple of weeks when my Mtec rear end and my wheels come in I'll snap a new photo and put it in my sig. Click here to enlarge
    Burger Motorsports
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    What manifold are you going with?
    Stage 2 or 2.5 E9X M3 S65 V8 supercharger kit for sale: http://www.boostaddict.com/showthrea...r-kit-for-sale

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    Tell me you have a 135i! I wish i knew the FFTEC TMK would fit a 135i 100% then I would probably be the first in Germany. Good luck on your build and keep us posted.
    RB's, Motiv PI, AR Downpipes, ARK exhaust, Stett CAI, Stett CP TAIL BOV, ETS FMIC, 1M Ohlins road and track conversion, M3 Bushings, VTT inlets, BMS Clutch Stop. SPEC Stage 3+ with MFactory flywheel

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    If you want to do 600+ on pump gas, go with your first choice Garrett GT4088R. It is a turbo proven to make power. A lot of the e36 guys run them as well.

    Edit: or a 6766 or a 7168

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    4 out of 4 members liked this post. Reputation: Yes | No
    Click here to enlarge Originally Posted by CannonFodder Click here to enlarge
    If you want to do 600+ on pump gas, go with your first choice Garrett GT4088R. It is a turbo proven to make power. A lot of the e36 guys run them as well.

    Edit: or a 6766 or a 7168
    As a turbo expert, do not take this advice. I repeat do not buy a GT4088R, well that is unless you really really love turbo lag. For those power levels you can easily reach them with a GTX35R or go with the PT 6466 that is on numerous N54 powered vehicles and has made well over 700 WHP and has made close to 600 WHP on pump alone. A GT4088R can make power but it does so with bigger wheels instead of newer wheel technology. Bigger wheels, more weight, more weight means more mass the exhaust energy has to spin, meaning slower spool times, and slower transient response, which means your car is less fun to drive. Sure if all you care about it some top end power number on a dyno, buy a 4088 throw it on there and let her rip. If you actually drive your car, size your turbo carefully and go with what it proven, a 4088 is not what you want. My .02

    Also just a note, on garretts on website the 4088R is rated for 75 HP less than a GTX3582R, GTX turbine wheel is 9mm smaller, and comp wheel is 6 mm smaller. These things all add up to faster spool and the same if not more power potential. Just because something is working on another platform, doesn't mean its a smart choice. Yes the GTX turbo is a about $400 more expensive, but in the end that will be $400 well spent when you aren't twiddling your thumbs waiting for that 40 series to spool up.

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    ^^turbo expert...... Man knows his turbos.

    Thanks Tony.
    2011 335is DCT, collecting parts....


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    6466 is my vote I'm not biased Click here to enlarge
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

  13. #13
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    As a turbo expert, do not take this advice. I repeat do not buy a GT4088R, well that is unless you really really love turbo lag. For those power levels you can easily reach them with a GTX35R or go with the PT 6466 that is on numerous N54 powered vehicles and has made well over 700 WHP and has made close to 600 WHP on pump alone
    You are definitely the turbo expert, however I think the 6466 is overkill when comparing to gtx35. There is no compressor map to see where it would fall into the efficiency range, but it is a 900hp turbo. Making 600whp on that would be easy, but wasting a turbo at its true efficiency.. I would stick to the 6262/6266 or the GTX35r, they're both in the 750hp range and would probably feel better than the 6466 for a DD.
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    Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
    You are definitely the turbo expert, however I think the 6466 is overkill when comparing to gtx35. There is no compressor map to see where it would fall into the efficiency range, but it is a 900hp turbo. Making 600whp on that would be easy, but wasting a turbo at its true efficiency.. I would stick to the 6262/6266 or the GTX35r, they're both in the 750hp range and would probably feel better than the 6466 for a DD.
    This is true and I 100% agree with you, but thanks to the Vishnu guys, they have had both turbos on the car, 6262 and 6466 if you compare logs and dyno graphs, spool is nearly identical. Not sure what they are putting in the water over there at PT to achieve this, but if the 6466 spools the same as the 6262 and will have to work less hard to make the same power, and gives me more power potential I would go with that turbo.

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    Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
    You are definitely the turbo expert, however I think the 6466 is overkill when comparing to gtx35. There is no compressor map to see where it would fall into the efficiency range, but it is a 900hp turbo. Making 600whp on that would be easy, but wasting a turbo at its true efficiency.. I would stick to the 6262/6266 or the GTX35r, they're both in the 750hp range and would probably feel better than the 6466 for a DD.
    i agree the 6466 may be overkill as of now.

    I did did a bottom mount so went with this turbo in preparation of a true trans solution and real fueling down the road. I'm overkill for now, but I'll be waiting and ready for the next big break thru Click here to enlarge
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

  16. #16
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    Click here to enlarge Originally Posted by VargasTurboTech Click here to enlarge
    This is true and I 100% agree with you, but thanks to the Vishnu guys, they have had both turbos on the car, 6262 and 6466 if you compare logs and dyno graphs, spool is nearly identical. Not sure what they are putting in the water over there at PT to achieve this, but if the 6466 spools the same as the 6262 and will have to work less hard to make the same power, and gives me more power potential I would go with that turbo.
    Click here to enlarge Originally Posted by Ak335i Click here to enlarge
    i agree the 6466 may be overkill as of now.

    I did did a bottom mount so went with this turbo in preparation of a true trans solution and real fueling down the road. I'm overkill for now, but I'll be waiting and ready for the next big break thru Click here to enlarge
    In that case, of course. It is correct to go with the 6466 without a doubt. Same reason why I went with a huge turbo on my cobalt even though it wasn't built. It's just that he said 600whp lol so yea. I had no clue that the 6262 and the 6466 were the same pretty much and was tested. I believe I'll be going for that too in my single setup. Looks like the best turbo for this platform.
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    You will be very happy. It makes power effortlessly.
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    Click here to enlarge Originally Posted by Linracing Click here to enlarge
    Well guys its about that time for me to start ordering parts for my custom single build.

    Turbo I plan on using is a Garrett GT4088R ( what you guys think? )

    My goal is 600-700whp

    What wastegate could I run with this turbo?

    Thanks
    Yeah, either go with one of the Precision options, or the GTX3582R. It will get you to your desired power levels and should spool a lot faster than a GT4088R (and it's a smaller package which you will appreciate when you are designing the manifold).

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    Damn guys you guys are great with info! Helped me out a lot, that's what I love about this forum...

    So I decided to ditch the GT40 and go with a Precision 6266 ball bearing.. Turbo is supposed to be rated at 750hp so that will be great for me.

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    Click here to enlarge Originally Posted by Sticky Click here to enlarge
    What manifold are you going with?
    Designing it myself I am buying all the supplies. Going to have a buddy of mine who is a excellent welder weld the manifold up. I might even build two and sell the other..

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    Click here to enlarge Originally Posted by Linracing Click here to enlarge
    Designing it myself I am buying all the supplies. Going to have a buddy of mine who is a excellent welder weld the manifold up. I might even build two and sell the other..
    PM'd.
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    38mm or 44mm tial will be fine for wastegate


    a lil fuel advice as i fought with it for a long time

    for your power goals, a simple solution is the 255 inline (in tank) and the vargas upgraded hpfp/rail. easy and it works
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    Click here to enlarge Originally Posted by Ak335i Click here to enlarge
    38mm or 44mm tial will be fine for wastegate


    a lil fuel advice as i fought with it for a long time

    for your power goals, a simple solution is the 255 inline (in tank) and the vargas upgraded hpfp/rail. easy and it works
    Thanks, I was thinking a 38mm wastegate would work as well. How much for the Vargas HPFP rail upgrade?

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    Click here to enlarge Originally Posted by Linracing Click here to enlarge
    Thanks, I was thinking a 38mm wastegate would work as well. How much for the Vargas HPFP rail upgrade?
    not sure i got it right at or before the time he started selling them, but it works great! send a PM to @VargasTurboTech

    i wont get in a war over wastegates, but yea 38mm will work. thats what im using and its brilliant. Im sure 44mm would also be outstanding.
    - Proven Power Tampa built 6466 ST -
    - N54 6AT WR 711whp 637wtq-
    -N54 WR 1/4mile trap: 133.57mph- -

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    Sounds good to me about fueling, thanks @Ak335i I got my answer here. If all goes as planned this will be fun! Click here to enlarge
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