Difference Between FSI and TSI?
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Thread: Difference Between FSI and TSI?

  1. #1
    New Dub Cub
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    Default Difference Between FSI and TSI?

    hi every i was planning to get a new intake and exhaust for my MKV GTI
    and out of curiosity what is the difference between a FSI and a TSi engine. when i poped my hood it said TSI on the engine. And all the intakes from neuspeed fits an FSI engine ( correct me if i am wrong). is this bad?
    if so what brand is good for my car

    thanks

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  3. #2
    Dubber In Training blancogti's Avatar
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    Default Re: Difference Between FSI and TSI?

    I dont think anyone has anything for that car yet. I called vw last week and their sales people werent even aware that the gti's they were getting in had a different engine in it. At waterfest all the vendors were asking if my gti had a tsi in it because they said they had nothing for it yet. APR said they couldnt "crack" the code for ecu tuning either.

  4. #3
    GTI Master prpltrck's Avatar
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    Default Re: Difference Between FSI and TSI?

    Quote Originally Posted by blancogti View Post
    I dont think anyone has anything for that car yet. I called vw last week and their sales people werent even aware that the gti's they were getting in had a different engine in it. At waterfest all the vendors were asking if my gti had a tsi in it because they said they had nothing for it yet. APR said they couldnt "crack" the code for ecu tuning either.
    OUCH, that sux...but I'm sure it won't be long.
    2009 VW CC, just 35% tint all the way around so far. Looks too good to mess with yet...I said YET!

    2007 GTI (lovingly bestowed upon another owner)

    http://myfastgti.com/volkswagen/show...light=prpltrck

  5. #4
    GTI Master SpeedyGTI's Avatar
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    Default Re: Difference Between FSI and TSI?

    yea but wats the difference? size, ecu?
    2003 GTI 1.8T: Lots of MODS

    Attention ALL NOOBS
    Step 1: Lower IT!!!
    Step 2: Eat a Sandwich

    pφtHoLe crew.

  6. #5
    New Dub Cub
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    Default Re: Difference Between FSI and TSI?

    TSI=Turbo Supercharged Injection=not available in U.S.=bummer
    FSI=Fuel Straight Injection=currently available in U.S.

  7. #6
    GTI Master
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    Default Re: Difference Between FSI and TSI?

    does that mean that the tsi engine has a turbo and a supercharger and if it does that sounds retarded i bet that it wouldent accelerate smoothly at all

  8. #7
    Jedi Dubber El Brando's Avatar
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    Default Re: Difference Between FSI and TSI?

    Quote Originally Posted by 07Hare View Post
    TSI=Turbo Supercharged Injection=not available in U.S.=bummer
    FSI=Fuel Straight Injection=currently available in U.S.

    FSI - Fuel Stratified Injection

    TSI - is the twin charged engine


    And turbo/supercharged cars are rare but not impossible. Check out last month's Eurotuner, it has a MKIV twincharged and a 3 series BMW twincharged. Pretty sick

  9. #8
    Dubber In Training blancogti's Avatar
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    Default Re: Difference Between FSI and TSI?

    Guys the us version of the "tsi" is not twincharged. It is just an updated fsi motor with some changes done to it. Check out this link and you can look at the vw manual on the engine. Besides being chain driven I know it has a different head with "valve lift" technology and supposedly has better fuel economy and torque. clicky http://forums.vwvortex.com/zerothread?id=3889971

  10. #9

    Default Re: Difference Between FSI and TSI?

    Check this out, from APR's website:

    http://goapr.com/VW/products/ecu_upg...vjettatsi.html

    Looks like they've cracked the ECU and the TSI engine also has a bit more power than the old FSI =)

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