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  1. #1
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    1 out of 1 members liked this post. Yes Reputation No

    Which nozzle should I use? CM7 or CM10?

    I have heard that coolingmist has a solid reputation for having the best meth nozzles so I am going with either the CM7 or CM10.

    My mods will be only a DCI, JB3 tune, and of course the coolingmist meth kit. So I will be pushing around 450hp using map 8. I am going to use map 8 90% of the time so I need a nozzle that will support boost levels around 17psi.

    It has just been brought to attention of many that the meth might not be distributed evenly and some of the cylinders in starvation of meth. I was thinking that maybe a bigger nozzle would minimize this problem making sure that each cylinder gets plenty of meth.

    The CM7 is rated at 10 gallons per hour and the CM10 is rated at 12.8 gallons per hour. I am not an expert nor am I a tuner so at this point I have no idea which nozzle I should use. I am hoping that some of you guys could give me your experience and recommendations!

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    Your not making 450whp on map 8... If your planing on pushing that much boost I'd go with cm10
    JB4LIFE

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    No downpipes?
    JB4LIFE

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    No downpipes and I am not talking about 450hp at the wheels but at the crank. Is 17psi of boost enough to render the use of the CM10 nozzles?

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    get a CM10 for extra flow and safety.
    07 335i AT - MOTIV 750 - MHD BMS E85 - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
    Click here to enlarge

  6. #6
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    Your right on the border... I'd say go with the 10 and see how it feels, if your car bogs it's too big
    JB4LIFE

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    for your power levels CM10. CM10. CM10.

    Buy it, if its too much flow I will swap it out for CM7 for free (just shipping). I dont think that to be the case.

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    Click here to enlarge Originally Posted by coolingmist Click here to enlarge
    for your power levels CM10. CM10. CM10.

    Buy it, if its too much flow I will swap it out for CM7 for free (just shipping). I dont think that to be the case.
    cant beat that deal..

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    Well if coolingmist says CM10 then I guess thats some solid advice!!

    Thanks a ton and I think that I will feel much better with the CM10 as far as ensuring that all cylinders are getting enough meth flow in case it is not being distributed evenly between all runners.

  10. #10
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    Click here to enlarge Originally Posted by LostMarine Click here to enlarge
    cant beat that deal..

    not even with a stick!
    JB4LIFE

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    even with 450 to the crank (assuming 15% drive train loss), your whp would be ~380??

    Any dynos with base and tune? would greatly appreciate it! Click here to enlarge

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    No dyno yet.... don't even have the mods put on the car yet. Just gathering all of the mods and then going for the install!

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    1 out of 1 members liked this post. Yes Reputation No
    or how about a dual nozzle (CM5 + CM7) setup with a shut-off valve like this. It gives you better atomization and better customization. (just shut off CM5 if you don't need that much meth)

    Click here to enlarge
    current: '12 E92 M3

    past: '09 335i E92
    best 1/4 ET: 12.47 on street tires
    best 1/4 trap speed: 115mph

  14. #14
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    Pretty cool.

    Get the CM10, perfect for you setup. I am pushing 17 psi and a single CM7 is too small. I am using dual CM7s and 2 x M2s to handle the boost. Moving about 1100 ml/min
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


    Click here to enlarge

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    Click here to enlarge Originally Posted by DBFIU Click here to enlarge
    Pretty cool.

    Get the CM10, perfect for you setup. I am pushing 17 psi and a single CM7 is too small. I am using dual CM7s and 2 x M2s to handle the boost. Moving about 1100 ml/min
    do you have a picture of that setup
    JB4LIFE

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    1 out of 1 members liked this post. Yes Reputation No
    http://www.bimmerboost.com/showthrea...just-tune-meth!!

    Picture is halfway down in this thread.
    Some people live long, meaningful lives.

    Other people eat shit and die.

    I'm not racist, I hate everybody equally; especially fat people.


    Click here to enlarge

  17. #17
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    1 out of 1 members liked this post. Yes Reputation No
    Click here to enlarge Originally Posted by mazdaspeed6 Click here to enlarge
    Your right on the border... I'd say go with the 10 and see how it feels, if your car bogs it's too big
    +1

  18. #18
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    1 out of 1 members liked this post. Yes Reputation No
    Does anyone know at what psi the CM10 injector is rated at? Is it rated 800 cc/min at 150 psi like their other nozzles or is it 800 cc/min at 250 psi?

  19. #19
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    Click here to enlarge Originally Posted by Bimmerbear Click here to enlarge
    Does anyone know at what psi the CM10 injector is rated at? Is it rated 800 cc/min at 150 psi like their other nozzles or is it 800 cc/min at 250 psi?
    Bump, paging coolingmist.

  20. #20
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    I would really..REALLY suggest doing downpipes..even if its the cheapo 2.5" ones..

  21. #21
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    1 out of 1 members liked this post. Yes Reputation No
    cm10 flows approx 800 cc/m with no checkvalve on our high pressure pump. That relates to roughly 175 psi.

    CM

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    1 out of 1 members liked this post. Yes Reputation No
    Now with my fbo and nitrous : dual cm10 it's the way to go ...

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