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Thread: Twins on my M52

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    Twins on my M52

    A friend and I are in the process of building a twin turbo "kit" for my '96 328is. I had the turbos sitting in the garage and he can fab up the manifold for only the cost of materials so you can call me stupid all you want, I'm still doing it lol. The only problem I'm thinking about is whether or not the turbos are too small. The turbos I have are Borg Warner K03s out of my Audi S4 left over from going stage 3 on it. I'm assuming that they will run out of breath at around 450 crank horsepower on the BMW, since they are pretty much maxed out on the 2.7 in the Audi at about the same number, am I right or am I overlooking something? Can anyone tell me how to read a compressor map in relation a twin turbo setup? Is it as simple as cutting the engine's airflow in half?

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    No you're right they will run out similar to how they do on the S4.

    Regarding a compressor map: http://www.germanboost.com/showthrea...ompressor-maps

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    I know how to read a compressor map. I meant relative to a twin turbo setup, do you cut the engine's airflow in half for that? Or is there a formula?

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    Click here to enlarge Originally Posted by nicetie Click here to enlarge
    I know how to read a compressor map. I meant relative to a twin turbo setup, do you cut the engine's airflow in half for that? Or is there a formula?
    Talk to @DBFIU

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