dyno expectations
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This is a discussion on dyno expectations within the New Member Hangout forums, part of the Community - Meet other Enthusiasts category; So far the only thing I have on the car is an SPT CBE. What dyno numbers could I see ...

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    dyno expectations

    So far the only thing I have on the car is an SPT CBE. What dyno numbers could I see if I tune with cobb or something similar. I read the other post where the poster had CAI and DP along with a CBE he pulled some great numbers 243whp and 319 ft lb. Just seeing if I need to go DP and CAI to get decent results. Again what could I expect with just a CBE & tune? Thanks...

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    Master Baiter EJ257's Avatar
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    Lot of factors - weather conditions, OTS or custom map, tuner, dyno, etc.

    The Cobb site offers dyno graphs for their StageII tune - I'd figure that would be an idea
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning

    "Never trust anything that bleeds for a week and lives ..."

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    thanks for the constant replies brother! you really make a newbie feel welcome! yea I looked at the cobb preset maps, but I'm wondering if a custom tune would yield bigger numbers. thanks again

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    Master Baiter EJ257's Avatar
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    Quote Originally Posted by makikogi
    I'm wondering if a custom tune would yield bigger numbers.
    Most likely.

    You can talk to your tuner and have as conservative/aggressive of a map as you'd like. Again, it depends on the variables mentioned above, but generally speaking, you will have higher #s, as well as a better power-curve and AFR
    2005 WRX STi (Mods | Virtual Dyno)

    Resident Tuner @ WTF Tuning

    "Never trust anything that bleeds for a week and lives ..."

    UNYSOC

  6. #5
    Registered User Xray10six's Avatar
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    Custom Tuning

    Custom tunes are always a better way to go, but before you go to any tuning shop, I always get background info on the person doing the tune (# of subies they've tuned, years doing so, price. etc). I've heard of some real horror stories about subies blowing up because of bad tunes. Im not sure where you are living, but if you are in the south east, I went to TopSpeed Performance in Ga, they did an amazing job on my tune. Scott has been doing it for years and has tuned over 800 Subies.

    As for the CBE, you'll probably only gain 5-10 hp assuming it is a larger diameter pipe and has a less constrictive muffler, the Down pipe, which houses your CAT, is where you will make some serious gains in HP. I replaced mine with a Catless 3" exhaust and bell mouth Down-pipe and had a serious gain, including quicker spool time on the turbo.

    Another cheap mod, if you have a little know how, Perrin lightened crank pulley (About $100), is an easy way to help your engine with idling, while at the same time, allowing the engine to pull harder.

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