JB4tech.com - International Turbo Tuning Discussion
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dRDiesel dRDiesel is offline
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Default Meth - 10-21-2020, 11:16 PM

Any meth users here still active? Was it worth it? I had meth on my 340i and I loved it, but I'm running E50-E60 on my 335is and I'm not sure if meth is necessary, but I am looking for cooler intake temps and more power.

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2011 335d
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Torgus Torgus is offline
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Default 10-22-2020, 07:14 AM

Meth is always worth it. Be it in your lungs or the lungs of your car.


E92 ACF 6466 + AM Meth / E70 #1 / E70 #2 JBD

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Default 10-22-2020, 08:48 AM

Quote:
Originally Posted by Torgus
Meth is always worth it. Be it in your lungs or the lungs of your car.
Which kit are you running?


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AWSAWS AWSAWS is offline
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Default 10-22-2020, 04:25 PM

You want cooler temps? Then run meth
You want more power? Then run meth. More meth allows more boost, more timing and more fuel.

There's a reason the fastest cars bar nitro cars run pure meth and they dont even use intercoolers


UK FBO 335i, ̶V̶T̶T̶ ̶G̶C̶s̶ China 19T, JB4, PI meth, BMS CP, OCC, Braided brake lines. Diff Lockdown. TMAP sensor, custom bucketless stage2

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11.74@129mph on GCs, custom port meth injection.
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ludo ludo is offline
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Default 10-23-2020, 06:26 AM

i'm running meth port injected, snow performance system with BMS manifold and ported rail
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Default 10-23-2020, 06:44 AM

Quote:
Originally Posted by AWSAWS
You want cooler temps? Then run meth
You want more power? Then run meth. More meth allows more boost, more timing and more fuel.

There's a reason the fastest cars bar nitro cars run pure meth and they dont even use intercoolers
I ordered the Snow Performance Stage 2.5 yesterday. Now I'm deciding if I should run 100% meth or stick to a simple 50-50 mixture.


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ludo ludo is offline
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Default 10-24-2020, 11:29 AM

Quote:
Originally Posted by dRDiesel
I ordered the Snow Performance Stage 2.5 yesterday. Now I'm deciding if I should run 100% meth or stick to a simple 50-50 mixture.
I'm running 100% meth and i love it ! do you the kit with the plate that comes between engine and manifold ?
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Default 10-25-2020, 09:44 AM

Quote:
Originally Posted by ludo
I'm running 100% meth and i love it ! do you the kit with the plate that comes between engine and manifold ?
No since I run a E50/E60 ethanal blend I got the kit that sprays through the charge pipe. I'm going to run dual CM5 nozzles and upgrade to dual CM7 nozzles later when I swap out the turbos.

I ran 100% meth on my 340i, but do you think its necessary on the N54? I was thinking about 50-50 or at least a 70-30 mix.


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Default 10-25-2020, 10:09 AM

I'm not an expert but I've been running meth on both N-A cars and boosted for some time. 100% meth is OK in cooler weather, if there's any temperature, there's an advantage to running between a 50/50 to 75/25. Water is better at removing heat than Meth. If you do run 100% that means much more Octane so you have to tune accordingly. It's a balance and if you have the ability to log, then that's the tell tale of how much or not to run.
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Default 10-25-2020, 10:49 AM

Quote:
Originally Posted by AWDGT2
I'm not an expert but I've been running meth on both N-A cars and boosted for some time. 100% meth is OK in cooler weather, if there's any temperature, there's an advantage to running between a 50/50 to 75/25. Water is better at removing heat than Meth. If you do run 100% that means much more Octane so you have to tune accordingly. It's a balance and if you have the ability to log, then that's the tell tale of how much or not to run.
I will most likely end up doing a 75/25 or 70/30 mix. I do want a little more octane, but also have the ability to also cool off the intake temps a little better then just running straight 100% meth.


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Default 11-02-2020, 09:15 PM

Does anyone know the nozzle size of 250cc, 500cc, and 1000cc is equivalent to the BMS BM nozzle? The AEM kit I got has those 3 options, but I'm not sure what size I need.


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Default 11-05-2020, 07:03 PM

The math is fuzzy because you have to convert cc flow to GPH, but.. 1000cc would roughly be a #15, 500cc is a hair over a #7, and a 250cc is about a #3 or 3GPH
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Default 11-23-2020, 07:55 PM

I got the meth kit installed. It's progressive and we all know the 10 psi starting point is great, but for full spray what's recommended? I also ended up running the BMS single BM10 nozzle.


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Cal1415 Cal1415 is offline
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Default 11-26-2020, 05:58 AM

Quote:
Originally Posted by dRDiesel
I got the meth kit installed. It's progressive and we all know the 10 psi starting point is great, but for full spray what's recommended? I also ended up running the BMS single BM10 nozzle.
Have you noticed an increase in power when running the BM10 nozzle on E50? What meth percentage did you use?


E92 335i Stock turbos on 101,000 miles.
JB4 + Trebila E50 BEF, XHP stage 3, Stage 1 LPFP, FBO, RB RHD outlets and inlets, Hoosier 28x10x17 tyres and Mickey Thompson ET Front tyres
Stock DI (no hpfp overdrive, no nitrous, no meth, no PI)
Weight: 1455kg (3200lbs) + 80kg driver
Power: 441whp 595wtq on a Dynojet
Best quarter mile trap: 11.84@128.2mph (stock turbos) at Crail Raceway, Scotland
Best quarter mile time: 11.22@124.2mph (stock turbos) at Santa Pod Raceway, England
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Default 11-27-2020, 11:32 AM

Quote:
Originally Posted by Cal1415
Have you noticed an increase in power when running the BM10 nozzle on E50? What meth percentage did you use?
After getting some adjustments made by my tuner I did notice a big gain of power the more it's being tweaked around and what helps the most is the HPFP is even happier since the trims stay higher from that extra meth fuel. I'm running a 80% meth mix with 20% distilled water and I have the controller set to full spray at 10 psi with the single BM10 nozzle.


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