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  1. #1
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    Looking at fitting a BMS meth kit, couple of questions

    Will running standard DPs be bad ?

    I have a AA CP and BOV, what will I need to buy to add a DO7 nozzle? Will I need to add a meth elbow or could I use a 1/8th Boss ?


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    335i ~ JB4 ~ BMS ~ DCI ~ Active Autowerks CP & BOV ~ Borla Catback Exhaust

  2. #2
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    1 out of 1 members liked this post. Yes Reputation No
    From my understanding the turbos have to work harder with the stock DPs vs. 3'' catless because there is more back pressure. So as you increase the output of the turbos they will be forced to work even harder. As meth is a chemical cooling method(as well as fuel) you will increase the boost of the turbos more than you normally would without the Meth. This will cause them to run hotter and harder than before. I think everyone will agree catless 3'' DPs will increase the life of your turbo when using meth with an agressive tune, how much is the unknown and basically impossible to say.

    You also get a slightly faster spool and increased HP with 3'' kittyless DPs.

    Unless I am mistaken people have hit 400whp on just meth, tune, and intake.

    Given the cost of a meth setup + install I would purchase DPs and a FMIC and install them myself. But that is just me.

    tl:dr you will be fine.
    Last edited by Torgus; 09-30-2013 at 05:00 PM.

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