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This is a discussion on New route within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; I almost bought a hta68... and I've rethought it... Instead I think I want to do the following: 1000cc DW ...

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    UnBanned Sinister's Avatar
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    New route

    I almost bought a hta68... and I've rethought it... Instead I think I want to do the following:

    1000cc DW Injectors
    grimmspeed EBCS
    grimmspeed EWG Up-pipe with a 38mm v-band
    perrin fmic with aps 50/50 valve
    E85 tune


    I'm thinking I'll gain about 30-40whp...

    (keep in mind I'm only at 17psi and with e85 I'll probably go to 20-22psi)

    Thoughts?
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    Registered User lytlec's Avatar
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    What if you did both or is this kind of a work up to a bigger turbo? Like supporting mods and what not?
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    UnBanned Sinister's Avatar
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    that's exactly what it is... A 20g on E85 would rip my transmission apart... I just spent over a grand on brakes, so I'm not going to be getting the STi 6spd. I'll be getting MFactory gears. So to hold me over, instead of getting an intermediate turbo before I get a big one, I decided that the 1000cc inj would be perfect for a 20g on e85, and that I'd like a fairly agressive tune, so getting an EWG with an upgraded BCS would be beneficial in the long run... So why not do it all first, and then get the transmission taken care of when my clutch starts to go out, and then get the 20G after the tranny is done.
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    Admiral Ackbar mycologist's Avatar
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    I thought the hta68 outflows a 20g?
    "From a little spark may burst a mighty flame." - Dante
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    Subaru Newb MainFrame's Avatar
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    Quote Originally Posted by mycologist View Post
    I thought the hta68 outflows a 20g?

    According to the numbers it does (47lb/min vs. 44 lb/min for a 20g) but I doubt anyone's actually getting more power out of the hta68 than they would have got from a 20g. I have seen a few 400whp+ hta68s on e85 tunes, so it might be possible, but I'm still a skeptic.



    I'm actually thinking about taking the same route. I just had my motor built and I've been wanting to upgrade to a 20g, but I don't have the cash. Then yesterday I noticed that there is a station with e85 right down the street, and I got to thinking. I could probably make close to 20g numbers on my vf22 with as little as some new injectors and an e85 tune. I'm actually pretty psyched about this venture.
    (luckily I've already upgraded gears, clutch, etc.)

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    Quote Originally Posted by mycologist View Post
    I thought the hta68 outflows a 20g?
    Nope. It's typical to expect 16G numbers on pump, but they make more power than a 16G would on higher octane fuel. But flow like a 20G, absolutely not.

    Quote Originally Posted by MainFrame View Post
    According to the numbers it does (47lb/min vs. 44 lb/min for a 20g) but I doubt anyone's actually getting more power out of the hta68 than they would have got from a 20g. I have seen a few 400whp+ hta68s on e85 tunes, so it might be possible, but I'm still a skeptic.
    Yes, a lot of tuners have posted outright bogus numbers with these turbos. Some of them are trying to pass off 20G/+50 lb numbers with these things.
    Last edited by brfatal; 03-09-2010 at 03:59 PM.

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    Moderator Donkey's Avatar
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    /\ I agree especially with the HTA68 on a 2.5L. It only comes with a 7cm hotside I think. I would do either a Td05h-18g with a 8cm or Td06-20G with a 7cm housing.
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    Admiral Ackbar mycologist's Avatar
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    So, John @ cobb is lying, surgeline is lying, whoever the other thread was (MAP?), and this is BS?





    It is kind of remarkable to me the amount of conspiracy surrounding this turbo. Personally I hope they make a smaller HTA that flows like a 16g or 18g but spools even better.
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    Registered User FUJIcar87's Avatar
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    Quote Originally Posted by mycologist View Post
    So, John @ cobb is lying, surgeline is lying, whoever the other thread was (MAP?), and this is BS?





    It is kind of remarkable to me the amount of conspiracy surrounding this turbo. Personally I hope they make a smaller HTA that flows like a 16g or 18g but spools even better.
    very nice.

    Would the HTA cause less abuse then the 20G?
    Slightly stupid question I know but for me Reliability>12 Second trap
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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by Donkey
    /\ I agree especially with the HTA68 on a 2.5L. It only comes with a 7cm hotside I think. I would do either a Td05h-18g with a 8cm or Td06-20G with a 7cm housing.
    EWG'd Blouch TD05H-18G/20G 8cm^2 is where it's at. Since he's already got the VF39 on his car, I think for the $$/benefit ratio to even out, he'd need a 20G
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    Admiral Ackbar mycologist's Avatar
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    Quote Originally Posted by FUJIcar87 View Post
    very nice.

    Would the HTA cause less abuse then the 20G?
    Slightly stupid question I know but for me Reliability>12 Second trap
    Not if they are tuned equally conservatively and it actually flows as much. The conclusion from that was that it is basically like a 7cm 20g but might fall a little behind a large one at the top end.

    John @ Cobb says more like this (it would actually hit harder with more driveline stress but is supposedly running less timing and boost) -

    This is supposed to be vs. a td06 8cm:
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    Registered User FUJIcar87's Avatar
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    Quote Originally Posted by mycologist View Post
    Not if they are tuned equally conservatively and it actually flows as much. The conclusion from that was that it is basically like a 7cm 20g but might fall a little behind a large one at the top end.

    John @ Cobb says more like this (it would actually hit harder with more driveline stress but is supposedly running less timing and boost) -

    This is supposed to be vs. a td06 8cm:
    Crap.

    So... what would you pick then? 18G, 68HTA or a 20G?
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    Admiral Ackbar mycologist's Avatar
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    Quote Originally Posted by FUJIcar87 View Post
    Crap.

    So... what would you pick then? 18G, 68HTA or a 20G?
    I haven't actually even ridden in a car with any of the above and have a 2.0l besides. I personally would like something that spools very quickly and don't need that much top end.

    With multiple reports that it is >18g power wise and possibly <20g on spool I would look into the HTA more (also $).
    "From a little spark may burst a mighty flame." - Dante
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    Toboggan T0rque's Avatar
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    Quote Originally Posted by EJ257 View Post
    EWG'd Blouch TD05H-18G/20G 8cm^2 is where it's at. Since he's already got the VF39 on his car, I think for the $$/benefit ratio to even out, he'd need a 20G
    This


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    Quote Originally Posted by mycologist View Post
    I haven't actually even ridden in a car with any of the above and have a 2.0l besides. I personally would like something that spools very quickly and don't need that much top end.

    With multiple reports that it is >18g power wise and possibly <20g on spool I would look into the HTA more (also $).
    Color me skeptical when they regularly make under 300 whp on a 2.0L and then magically make 50 whp more when put on a 2.5L. Either 2.0L tuners are holding back on a turbo meant for that motor or something is fishy.

    BTW, 2 of the 3 tuners you mentioned are Cobb employees.

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