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Thread: 335i exhaust setup question

              
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    335i exhaust setup question

    Hi ... I had DP+76mm straight midpipe+ stock muffler right now and I had put upgraded turbos on

    my car now. Is the exhaust setup ok for upgraded turbos? What do you recommend? Thanks.

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    Click here to enlarge Originally Posted by 7158sean Click here to enlarge
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    Hi ... I had DP+76mm straight midpipe+ stock muffler right now and I had put upgraded turbos on

    my car now. Is the exhaust setup ok for upgraded turbos? What do you recommend? Thanks.
    Is that a single 76mm midpipe or twin 76mm? If single - well yeah i guess, stock should be twin 2" i think...If twin, awesome!

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    Click here to enlarge Originally Posted by Flinchy Click here to enlarge
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    Is that a single 76mm midpipe or twin 76mm? If single - well yeah i guess, stock should be twin 2" i think...If twin, awesome!
    What I had is a single 3" midpipe, So you think twin 3" will works better with upgraded turbos? what about my stock muffler? enough air flow with upgraded turbos? I only make 9.5sec for 100-200 with Meth..so I was wondering is it my stock muffler the problem? Will a bigger charge pipe help? Thanks

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    Stock exhaust isn't really restrictive as long as you have catless or race-catted downpipes. The primary cats are the only real restriction.
    E92 335i SB / Black Leather / 6AT / Navi Prof / Sunroof / Active Steering
    Mods: Performance Seats / Performance Exhaust / RB Turbos / M3 CF Roof / Brembo GT BBK 355/345 / Rollcage / M3 Mirrors / Forge FMIC / QUAIFE LSD / Ohlins R&T / M3 Suspension Parts / Vorshlag Camberplates / Megan Toe Links / LeatherZ Gauges / Extended M3 DCT Paddles / ER Sports OC / AR OC / Aux Radiator / AR catted DP / COBB Pro-Tune
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    Click here to enlarge Originally Posted by Autobahn335i Click here to enlarge
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    Stock exhaust isn't really restrictive as long as you have catless or race-catted downpipes. The primary cats are the only real restriction.
    so my stock muffler is fine with upgraded turbos? thanks

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    Yes its fine, you might be able to get 2-3 extra whp if you go straight exhaust, but then you have to live with that noise.




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    Click here to enlarge Originally Posted by E90SoFlo Click here to enlarge
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    Yes its fine, you might be able to get 2-3 extra whp if you go straight exhaust, but then you have to live with that noise.
    Yes, I don't want that loud noise. thanks

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    Catless DPs + Aftermarket Turbos = 100% fine for a 335. If you had a 135 you'd have to upgrade the CBE because it's a lot more restrictive. Enjoy the extra power!
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
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    Catless DPs + Aftermarket Turbos = 100% fine for a 335. If you had a 135 you'd have to upgrade the CBE because it's a lot more restrictive. Enjoy the extra power!
    Sorry forget to mention I had Procede V5 and do I need to change aftermarket BOV? Can the stock BOV hold the V5 map1, map2+meth pressure with upgraded turbos? thanks

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    Click here to enlarge Originally Posted by 7158sean Click here to enlarge
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    Sorry forget to mention I had Procede V5 and do I need to change aftermarket BOV? Can the stock BOV hold the V5 map1, map2+meth pressure with upgraded turbos? thanks
    OEM DVs are hit & miss. Some hold up to FBO boost, some peoples break the minute they add a tune. I DD my car so I upgraded the CP + DVs to avoid anything breaking & the car being down.
    COBB AP ProTune by Bren of ///Bren Tuning
    Akrapovic DP | Helix FMIC | Alpina TCM Flash | Walbro 450LPH Fuel Pump


    "The moment money becomes your motivation, you are immediately not as good as someone who is motivated by passion and internal will." -A. Senna

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    Click here to enlarge Originally Posted by benzy89 Click here to enlarge
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    OEM DVs are hit & miss. Some hold up to FBO boost, some peoples break the minute they add a tune. I DD my car so I upgraded the CP + DVs to avoid anything breaking & the car being down.
    Thanks Benzy89 I will try to replace my DVs to see is this the problems that slow my car down. thanks.

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    Click here to enlarge Originally Posted by 7158sean Click here to enlarge
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    Thanks Benzy89 I will try to replace my DVs to see is this the problems that slow my car down. thanks.
    Before spending money on parts that may not need to be replaced you should grab some datalogs and see if we can help you track the problem down.

    MOTIV750, MOTIV P-1000 PI, MOTIV/FUEL-IT! low pressure fuel system, AEM EMS/COBB AP, Aquamist HFS-3, ETS FMIC, SPEC stage 3+ clutch/SS flywheel, BC Racing coilovers and VMR wheels wrapped in Hankook RS3s.

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    yes ....I will try to log some data soon ....thanks

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