davenew

They list (150, 175, 225, 375, and 625 ml/min.) I would like to put my own water injection together but I've been working a lot and summer is passing by. I believe you're only using one nozzle. Is that right? Do you recall what you set everything at? thanks<ul><li><a href="https://forums.audiworld.com/s4/msgs/2277391.phtml">https://forums.audiworld.com/s4/msgs/2277391.phtml</a></li></ul>

rojodosformula::red

"Hello S4,My car is also a twin turbo with both going into a single Y-pipe into one TB. I run a single nozzle before the TB. Moving the nozzle back could result in cooler intake air temps, but you want to get some of the fluid into the cylinder where it will be more beneficial, before it all evaporates. I would start with a single the 375 nozzle for your boost level and HP. If you decide to go two nozzles then use two 225s and turn the pump pressure down by 4 turns. Best regards, Dan"

Here's a link to the forum post as well. So far so good with the 375 single nozzle. I'm just stg 2 though. Also the kit comes with a 175, 375, and a 625 nozzle.

<a href="http://www.snowperformance.net/forum/viewtopic.php?t=404&highlight=">Link</a>

davenew

I'll see if they'll substitute the nozzles so I can get 2 225's in the kit.

Flyboy

I would argue that you can't decide whether injecting into the intake just after the IC's, or right before or after the throttle plate, is the best option without trying both locations. Where you inject the water should be driven by what you are trying to do, and each location has different benefits. It's not as simple as saying one is better than the other.

Additionally, that person is making it sound as though all of the water will evaporate before reaching the engine if you spray it into the intake air right after the IC. If you sit down and crunch some numbers you can get a rough idea of how much energy is required to heat that injected water to the vaporization point, and then how much additional energy is required to vaporize it. Then compare that to how much energy is required to cool the intake air 30-40F. I think you'll find there's still a good amount of water in liquid form entering the motor.