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I have a G30 w/ a stock N63TU2 aka N63R, 93 octane (no ethanol content)

I added a JB4 and running map 2, however there is little noticeable difference going from stock to JB4. I supposed I was expecting more, having had an N54 with JB4 and BEF made a huge difference as the car was putting down 468tq on stock intake/stock turbos/stock exhaust w/ meth injection and E40.

Currently, I don’t have access to E85 fuel, so no option to run more aggressive maps.
a JB4 + BEF (back end flash) could provide a bump in power but MHD / Bootmod3 do not offer one for the TU2, DUDMD offers one but as a standalone, but again without more octane running more aggressive tune wont work.

Not currently looking for upgraded turbos / down-pipes as the car is under warranty, need something more reversible.

Thinking to do methanol/water injection but with the clamp style intake manifolds I'm worries about even spray distribution with nozzles pre TB,
direct port is out of the question, 8 nozzles is a plumbing nightmare, there special adapters for pre-turbo injection as a last resort, but then you have the ICs condensing the droplets.

please share if you have experience running methanol/water injection with the clamp style intake manifolds on the N63/S63, how did you ensure even distribution and what power/times did you put down?