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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Meth nozzle size selection guide!



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      06-10-2011, 06:51 PM   #1
dzenno
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Thumbs up Meth nozzle size selection guide!

Finally a guide showing nozzle sizes as they relate to boost/psi and hp...

http://www.suprasport.com/Nozzle--Me...on_p_5540.html

I'll be going down to an m10 from my current m14...always felt like it was overkill and it does bog sometimes..
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      06-10-2011, 07:09 PM   #2
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Nice find so your m14 flows around 1000 ml/min which translates to 20 on procede flow.
Cant you regulate it ? You can just lower pump pressure or make it go full on higher psi.
You prefer it smaller for atomization?
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      06-10-2011, 07:16 PM   #3
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      06-10-2011, 07:31 PM   #4
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      06-10-2011, 08:01 PM   #5
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A generic M14 nozzle is normally 14 GPH or 14 * 3.78 LPH. Or around 882ml/min. I know the CM10 does around 750ml/min @ 180-200psi. For higher power applications many users have found they need anywhere from 1000-1800ml/min to hold full timing and a good air/fuel ratio. I don't think that chart works for the N54.

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      06-10-2011, 08:10 PM   #6
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Remember that is for 50/50 mixture and I suspect the reason they suggest these nozzle sizes is because of quench. A better way to choose your nozzle is determine how much water you want to spray, then use meth ratio to determine what nozzle is best for you needs.
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      06-10-2011, 09:35 PM   #7
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CM10 + solenoid + 250psi pump with 90/10 or 100% meth with 18.5-19psi on stock turbos = no problems.

According to the Procede and JB4 meth output, that's around 950-1000 ml/min. Plenty for this application.
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      06-10-2011, 10:03 PM   #8
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Quote:
Originally Posted by themyst View Post
CM10 + solenoid + 250psi pump with 90/10 or 100% meth with 18.5-19psi on stock turbos = no problems.

According to the Procede and JB4 meth output, that's around 950-1000 ml/min. Plenty for this application.
What will the new PWM Meth kit come with... CM10s? Does anybody know?
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      06-10-2011, 10:20 PM   #9
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Quote:
Originally Posted by DaFish View Post
What will the new PWM Meth kit come with... CM10s? Does anybody know?
Two 1mm nozzles that are each close to M7's.
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      06-11-2011, 11:36 AM   #10
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Quote:
Originally Posted by scottp999 View Post
Two 1mm nozzles that are each close to M7's.
+1. This is the method decribed on the Howerton Engineering website.

Here is the link for those interested...

http://howertonengineering.com/tech-...ating-jetting/

Describes in more detail.
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      06-11-2011, 01:19 PM   #11
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Quote:
Originally Posted by Mike@N54Tuning.com View Post
I know the CM10 does around 750ml/min @ 180-200psi
I've measured my flow several times and I'm always getting 900 ml/min with my CM10.
I have a relay who is feeding the pump directly from the battery instead of letting the boost switch doing this job.
This results in 100% good voltage which the boost switch doesn't manage to deliver due to the nasty voltage drop that will occur with this solution.

100% good voltage to the pump means 100% good flow.
I assume there's a risk of getting the same voltage drop using a CMGS or VC2...
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      06-11-2011, 01:22 PM   #12
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Quote:
Originally Posted by DaFish View Post
What will the new PWM Meth kit come with... CM10s? Does anybody know?
PWM meth kit from vishnu is not comparable they use entirely different nozzles. However if I recall their dual nozzle setup is = to two m7 (but dont quote me) its somewhere in one of those threads.
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      06-11-2011, 02:19 PM   #13
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Quote:
Originally Posted by Big Tom View Post
I've measured my flow several times and I'm always getting 900 ml/min with my CM10.
I have a relay who is feeding the pump directly from the battery instead of letting the boost switch doing this job.
This results in 100% good voltage which the boost switch doesn't manage to deliver due to the nasty voltage drop that will occur with this solution.

100% good voltage to the pump means 100% good flow.
I assume there's a risk of getting the same voltage drop using a CMGS or VC2...
How do you manage the relay? Is your spraying still related to boost albeit not having the boost switch?
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      06-11-2011, 02:45 PM   #14
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Quote:
Originally Posted by jippii ensio View Post
How do you manage the relay? Is your spraying still related to boost albeit not having the boost switch?
I'm still having my boost switch, but it is only activating the solenoid and the coil on my pump relay.
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      06-11-2011, 03:12 PM   #15
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Quote:
Originally Posted by jippii ensio View Post
How do you manage the relay? Is your spraying still related to boost albeit not having the boost switch?
Its actually very smart to run the meth pump on a relay! I might one day even do this myself! Do a search on how relays work and how to wire it in...Its pretty simple once you understand how it works...I wired a relay to my automatic bottle opener for my nitrous even though the kit did not come with one...Works wonders on drawing current from the battery source rather than using a fuse-tap
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