M275 V12 Bi-Turbo Platform Technical discussion relating to models sharing the M275 V12 Bi-Turbo (V12 TT). Including SL600, SL65 AMG, CL600, CL65 AMG, S600, S65 AMG.
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Installed M275 Weistec Water/Methanol kit

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Old Jun 10, 2020 | 06:16 AM
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Exclamation Installed M275 Weistec Water/Methanol kit

Installed Weistec Water/Methanol kit
still tuning but using mid size nozzle set to full at 30 psi






Water / Methanol is a must have for V12 biturbos
I hit 33.4 psi at least and full time now (my car is heavy tuned)
update, now hit 34.5 psi

Last edited by pmercury; Jul 5, 2020 at 11:55 AM.
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Old Jun 11, 2020 | 03:27 AM
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transmission needs more cooling

one more radiator with fan

Last edited by pmercury; Jun 14, 2020 at 04:45 AM.
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Old Jul 2, 2020 | 04:35 AM
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how did meth work out for you?
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Old Jul 2, 2020 | 04:40 AM
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Originally Posted by 2007sclass
how did meth work out for you?
I am on overtuned V12 if it worked ? I can not believe I never did this before
it is the the best addon ever if you have great cooling upgrade
I have full size intercooler radiator + 2x pierburg CWA100 + Weistec Meth/water

just sick how low my temps are and 34psi boost

a MUST HAVE
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Old Jul 2, 2020 | 09:45 AM
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I've always wondered what your car looks like, can you post a pic of your setup Pmercury? This is something i'd like to do for my car as well, i've decided to keep it and go all out with mods. Had thoughts about trading it in for a C8 corvette but seeing a how a tuned only MKV Supra walked it i don't think i can live with that.
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Old Jul 20, 2020 | 09:05 AM
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I will follow your sugestion and will do the methanol injection to my 2007 S65.

Mine has Stage 3 Kleeman tune, cat deletes, high flow air filters and Quaife LSD, but at the dyno was reading 190+ on the intercoolers side. I will upgrade to a 10gpm water pump, but will like to know what wlse have you done on the cooling side.

Also, do you did any aditional tuning to get 34 psi? What else do you recomend we do to it?
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Old Jul 20, 2020 | 12:31 PM
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Originally Posted by MBTION
I will follow your sugestion and will do the methanol injection to my 2007 S65.

Mine has Stage 3 Kleeman tune, cat deletes, high flow air filters and Quaife LSD, but at the dyno was reading 190+ on the intercoolers side. I will upgrade to a 10gpm water pump, but will like to know what wlse have you done on the cooling side.

Also, do you did any aditional tuning to get 34 psi? What else do you recomend we do to it?
Try meth first, good pumps, full size radiator
use the nozzle 2 and set the controller to startup 4-6 and max at 30

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Old Jul 20, 2020 | 12:52 PM
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Originally Posted by pmercury
Try meth first, good pumps, full size radiator
use the nozzle 2 and set the controller to startup 4-6 and max at 30
Do you mean 2 pumps? How?
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Old Jul 20, 2020 | 01:47 PM
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you just take two pierburg CWA100 's hook one up where the old is
another one right after the radiator
both on a relay and good wiring
I added two Spal pusher fans on the front with a controller and temp sensor
https://mbworld.org/forums/cl-class-...-part-2-a.html

some say this, some say that.....I chose this
I just did this and all together with Meth injection, result is insane
even with 30C/86F I can get the engine at 80C/176F without meth


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Old Jul 22, 2020 | 11:27 AM
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Originally Posted by pmercury
you just take two pierburg CWA100 's hook one up where the old is
another one right after the radiator
both on a relay and good wiring
I added two Spal pusher fans on the front with a controller and temp sensor
https://mbworld.org/forums/cl-class-...-part-2-a.html

some say this, some say that.....I chose this
I just did this and all together with Meth injection, result is insane
even with 30C/86F I can get the engine at 80C/176F without meth
Sorry for the question, but do the fans come with the controler or do I have to get it apart?
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Old Jul 22, 2020 | 11:46 AM
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Originally Posted by MBTION
Sorry for the question, but do the fans come with the controler or do I have to get it apart?
apart of course
the best one I bought is here
variable
enjoy the silence
https://www.flex-a-lite.com/accessor...ntrollers.html
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Old Jul 22, 2020 | 11:56 AM
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I will have to move 2 of the radiators because it has 3 sandwiched together on top and one below and I only have a 7"×22" area available as it is right now.
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Old Jul 22, 2020 | 12:52 PM
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Originally Posted by MBTION


I will have to move 2 of the radiators because it has 3 sandwiched together on top and one below and I only have a 7"×22" area available as it is right now.
yes sorry
forgot to mention I removed the ABC radiator
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Old Jul 22, 2020 | 01:13 PM
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Originally Posted by pmercury
yes sorry
forgot to mention I removed the ABC radiator
Is that the really small one on top?
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Old Jul 22, 2020 | 01:55 PM
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Originally Posted by MBTION
Is that the really small one on top?
yup
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Old Aug 1, 2020 | 06:25 PM
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Originally Posted by pmercury
Installed Weistec Water/Methanol kit
still tuning but using mid size nozzle set to full at 30 psi






Water / Methanol is a must have for V12 biturbos
I hit 33.4 psi at least and full time now (my car is heavy tuned)
update, now hit 34.5 psi

How fast at 1/4 mile???

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Old Aug 2, 2020 | 04:47 AM
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Originally Posted by Ekselent
How fast at 1/4 mile???
everything depends on outdoor temps with these twinturbo V12's
since I installed the kit I did not have the time with the right outside temps to run one
the car still doesn't like outside temps over 93F 34C but that was as expected
but the difference is sick
Ill do a new 0-200 Kph video in my favorite tunnel soon
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Old Aug 28, 2020 | 12:03 PM
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new balance
whats you before and after IAT?
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Old Aug 28, 2020 | 01:02 PM
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Originally Posted by JAYCL600
whats you before and after IAT?
wooops not in racing, what is IAT ?
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Old Aug 28, 2020 | 01:23 PM
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Originally Posted by pmercury
wooops not in racing, what is IAT ?
Intake Air Temp😉
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Old Aug 28, 2020 | 02:22 PM
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lol

then I don't get the question as the answer is in the picture..................
and that was a very hot day
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Old Jan 24, 2025 | 03:54 AM
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SL63 AMG,E63 AMG,CL63 AMG, S63 AMG
M275

I just got a m275 what do u recommend I want to go all out too!
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Old Jan 24, 2025 | 06:36 PM
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I would love to know what 0-200kph time @pmercury achieved (post #17) with his 35psi boost, but he has not been active here since 2022.
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Old Jan 26, 2025 | 02:11 PM
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Originally Posted by mrvedit
I would love to know what 0-200kph time @pmercury achieved (post #17) with his 35psi boost, but he has not been active here since 2022.
Also known as BenzNinja.
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Old Jan 26, 2025 | 03:36 PM
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Originally Posted by JohnLane
Also known as BenzNinja.
Oh. Thanks. I am on his support service and he has helped me out several times. Will ask the next time we talk.
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