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This is a discussion on 2 questions within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; ok, the first one is- my friend is taking his ap back, so i will now be back on no ...

  1. #1
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    2 questions

    ok, the first one is-
    my friend is taking his ap back, so i will now be back on no tune, so how much power do you guys think i would be making at the wheels?

    and the next one is-
    i also might be getting a deadbolt 18g...is this a good idea? how do they perform on the ej20s? would this turbo be too big?

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  3. #2
    Registered User jeffmm06's Avatar
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    You should really change your user name to :Toomuchboost:
    The MBC should be removed and returned to stock, our engines are not like others where you can turn the boost up and drive. The AP will raise it slightly, but not even to 18.

    Use our search engine for MBC. Read about it.

    For the turbo if your goal is 300whp you could check out www.jscspeed.com for a IHI series VF34 should yeild around 290whp full spool at 3200rpms or for 310whp a VF22, but its gunna lag the most due to it will not be fully spooled until 3600rpms.

    Id say get a VF34, loose the MBC, get a uppipe, fuel pump, STI (pink) injectors, and upgrade your IC to an STi IC, and get a tune. You'll also need to figure out which EM system you will want to go with since you no longer have the AP.

    Also I assume you have a 5mt, dont forget that your trans will be close to its limitations on how much power it can hold, you may want to consider that before upgrading the turbo. Probally no further than stage 2 on a stock 5mt
    Last edited by jeffmm06; 01-09-2008 at 11:03 AM.
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    thanks for the tips..
    when it comes to the mbc, i am going to drop it too 17 soon...and then get tuned on that....

    and when it comes to the turbos, i had considered a ihi turbo, but the price and the fact that you cant rebuild them deterred me...
    and plus i am getting a really good deal on a 18g...

    but i will look into the vf34 and vf22 more...

  5. #4
    Is in Love With the Admins Here 20WRX04's Avatar
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    Quote Originally Posted by NotEnufBoost View Post
    thanks and when it comes to the turbos, i had considered a ihi turbo, but the price and the fact that you cant rebuild them deterred me...
    and plus i am getting a really good deal on a 18g...
    but i will look into the vf34 and vf22 more...
    I would search Ebay & WRX for sale forums. They always have VF34s,VF39s, & VF43s for sale at half the price of new. Good luck.

    And DEFINATELY get some EM.

    Here's some good info. http://www.jscspeed.com/wrx/turbo/ihi_turbo.htm
    Last edited by 20WRX04; 01-09-2008 at 11:40 AM.
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  6. #5
    Pro Manscaper Mikie13's Avatar
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    VF turbos are a good way to go because you don't need to go crazy with supporting mods and they yield great power gains especially for the money. You won't HAVE to upgrade to a FMIC, but an STI or larger TMIC would do nicely. You also could just pop in some STI injectors or STI Pinks and be perfectly fine with your fuel.

    An 18G isn't terrible, but it would be a bit laggy on the 2.0L when compared to the IHI turbos.

    And just be careful with your MBC...I would disconnect completely or lower it to stock without your engine management, until you get it tuned.

    A lot of people around here will trash MBCs, but if you know how to use them, they can be a good mod...but without being tuned...I'd steer clear just to be safe.

    As for your transmission...once you go to 300hp or so...you're about to hit the redzone and risk a chance of blowing it pretty quickly. Its not definite of course, but the added power, you just have to be much more careful about banging around gear/launching, etc...goodluck with everything dude
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  7. #6
    Registered User bcyb1029's Avatar
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    18g is great if you don't mind some extra lag
    Tuned by Jorge at P&L, 240.83whp 239.60wtq at 14.8psi on 2.0L with stock td04 (But doesn't run)

  8. #7
    Registered User Feezor's Avatar
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    Quote Originally Posted by bcyb1029 View Post
    18g is great if you don't mind some extra lag
    How much extra lag?

  9. #8
    Registered User bcyb1029's Avatar
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    300-500rpm extra maybe, but u have a 2.5 so I wouldn't worry about it
    Tuned by Jorge at P&L, 240.83whp 239.60wtq at 14.8psi on 2.0L with stock td04 (But doesn't run)

  10. #9
    Registered User 06PearlWRX's Avatar
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    I wouldn't consider it a question of "how much hp" your gonna have without any EM, but rather "how soon till i break something?".
    "90 miles an hour through trees sideways is pretty damn scary" ~Ken Block

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