[n55hotnheavy]

Hello, I am just looking for someone to sum up a few questions I have in relation to adding water meth sorry for the noob questions. I'm currently running on my 2012 335i
BM3 stage 2 93 octane (the best fuel available in my country)
Intake, DP, FMIC, CP, BOV, catback exhaust
I am looking to use my CP as the injection method for meth.

is it okay to run meth on the OTS stage 2 BM3 tune without a JB4?

Because I'm only looking to lower IATs, I will not be doing a custom tune so can I just turn the meth on and off as I would like? say only whilst driving hard?

If I add a PS2 turbo upgrade in the future can I continue to use the BM3 OTS tune with meth and no custom tune ? would it be worth it or should I find a way to control the meth ( jb4) to get a custom tune and max results?

many thanks

[BoostleakTV]

If you ever want to use meth for fueling, you will need a tune. Even50/50 mixes will still mess with AFR so good idea to go custom regardless.

If you’re just trying to lower IAT, you can run a small nozzle and spray 100% distilled water. Reach out to some tuners and ask their recommendations on nozzle size and spray psi for water injection.

[n55david]

Originally Posted by BoostleakTV

If you ever want to use meth for fueling, you will need a tune. Even50/50 mixes will still mess with AFR so good idea to go custom regardless.

If you’re just trying to lower IAT, you can run a small nozzle and spray 100% distilled water. Reach out to some tuners and ask their recommendations on nozzle size and spray psi for water injection.

this