Newbie Here With Question About Water Injection

[AlanL]

I have an Infiniti G35 Coupe Automatic with ATI Supercharger. Max boost hits around 8psi. Compression ratio is 10.3:1. I have some timing pulled and just about to finish tuning. Currently 370hp and 304 torqe.

I have installed a home made system and was wondering what your recommendations are.

What size nozel?
Isopropyl, Ethanol, or Methanol?
Percentages?
PSI of pump.
Is it better to go high pressure and smaller jet?

I am using a #6 aquamist nozzle and injecting before the throttle body.
I am using a boost switch which kicks in a 4psi. Two windshield washer pumps.

Also where can I find a selection of higher pressure pumps.

Thanks for helping a novice.

AlanL
my email address is AlanL1275@aol.com

[M3Turboca]

Alan don't use wind shield washer pumps they are not strong enough to atomize the water.

I think this is what the grand nation guys use.

http://www.northerntool.com/webapp/wcs/stores/servlet/ProductDisplay?storeId=6970&productId=9414&R=9414

Your other parts listed and setup seems fine. You may even can add back that timing.