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  1. #61
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    Guest-only advertisement. Register or Log In now!
    In plain English, is there a cheap solution to increase boost by a bit?

    And how much can the boost be increased on a totally stock ST, without the ECU triggering all kinds of error codes?
    If I can just install some valve (spring or other mod) of a few tens of dollars, without a tune, and gain even +1PSI extra without a tune, it would be worth it (I hope).

    I understand running higher pressure can destroy the Turbo.
    I'm barely ever taking my car over 4k RPM anyway.
    I just love the turbo kicking in, when I surpass the 2.5k RPM. And usually pull it to 3.5-4k RPM before shifting. Occasionally 4.5k RPM.
    I don't see myself changing that.
    Adding a few PSI of boost, will hopefully add to the acceleration effect around that RPM range.

  2. #62
    Senior Member 987 Rep Points TyphoonFiST's Avatar
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    Not worth it....just go buy an accessport... use an OTS cobb tune or get a flash tune by Dizzy tuning or Stratified....end of story...you're in the performance game here....you have to pay to play or in the end you will pay more for trying to be Frugal.

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    A Turbo Transformer is the only thing I can think of that adds about 2 psi of boost without the use of the AP
    and doesn't throw any engine codes. That is one of the first mods i did thinking that would be enough.
    That didn't last long before the bug bit and I wanted more.
    It also cost $200 so you would be better off just saving up for an AP new or used and using the cobb tunes or getting a Dizzy/Stratified tune.
    COBB AP W/Stratified 93 tune
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    Turbo Transformer
    AWR/RMM = 70a
    Powerflex pass insert
    Pierce Motorsports 2 PT front & rear bar
    NGK 6510 plugs
    Resonator delete
    Symposer delete

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    Guest-only advertisement. Register or Log In now!
    Quote Originally Posted by MeeLee View Post
    In plain English, is there a cheap solution to increase boost by a bit?

    And how much can the boost be increased on a totally stock ST, without the ECU triggering all kinds of error codes?
    If I can just install some valve (spring or other mod) of a few tens of dollars, without a tune, and gain even +1PSI extra without a tune, it would be worth it (I hope).

    I understand running higher pressure can destroy the Turbo.
    I'm barely ever taking my car over 4k RPM anyway.
    I just love the turbo kicking in, when I surpass the 2.5k RPM. And usually pull it to 3.5-4k RPM before shifting. Occasionally 4.5k RPM.
    I don't see myself changing that.
    Adding a few PSI of boost, will hopefully add to the acceleration effect around that RPM range.
    If really all you want is is a little more boost you can go for a Flowmaster Delta Module but I agree that getting a used AP is the better way to go, and use a simple and safe included Stage 1 tune. It really unlocks natural torque of the engine and makes it more fun to drive.
    '17 Magnetic, black wheels/red calipers only option - New Feb, '18. Dizzy V2 e30 with Cobb TC at 3 as daily smooth tune, Stratified v4.00 93 octane with Stratified Optimal TC when e85 not available. Torque Solutions 75a RMM, TB Performance Traction Bar, Mojo Mfg short shift kit, drop-in filter w/cold air shroud cutout. Whoosh silicone Symposer delete and hotside J pipe, 18" Magnaflow glasspack muffler with 9" resonated DC Sports black tip, Powerflex passenger side Street engine mount insert with ARP bolt upgrade, step colder NGK plugs gapped at .0275. *Driver side/trans mount insert, TS VR2 EM plumb back DV and Whoosh crossover with turbo inlet installed soon.

    FYI - 92 octane e10 pump premium is very close to if not actually 93 octane, start with a 93 tune and datalog from there or you're leaving free power on the table running 91 tunes.

 

 
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