I know I have not posted much, and I'm new. I have a question though. I own a 2008 Audi A4 2.0t, and am looking into cooling down my inlet temperatures. Without buying a thousand dollar intercooler upgrade, are my options confined to water-meth injection, and NO2, and if so, which is better?
I don't exactly remember but isn't the intercooler not really in the path for cold air. Can you just route air to and from it better? A good meth/water injection is about the same as an intercooler.
I have twin side mounts that come stock. Down the road I want a GT30R swap, but even the beast of an intercooler that AWE sells isnt really designed for that amount of cooling. Air flows from the intake to the turbo into the intercooler(s) and into the intake. The hoses I have are stock, and I could put aluminum pipes in there, but the diameter won't be any larger, and the pipes couldn't be any straighter.
I meant air through the stock intercoolers to cool the charge not the charge itself. More air through intercoolers means a cooler charge.
Oh and if your going with a larger turbo just wait to do the intercooler at the same time.
Water meth is the way to go. I have heard of people running big turbos on their 1.8 and 2.0t's with stock intercoolers and meth injection. A stock intercooler will create slightly more boost loss from being less efficient, but if you run methanol you will not see much of a gain other than increased boost from upgrading the intercooler.
N02 cools the charge slightly, but is mostly used for increasing the % amount of oxygen in the intake charge. Nitrous and C02 sprayers that are attached to the front of the intercooler, however, will help with cooling the charged air but only for a short period of time and usually doesn't do a whole lot of good unless you are on the dyno.
Meth is my suggestion though. Just make sure if you are tuned for meth that you have some sort of failsafe if you run out of meth mid-run. I know there are some tuners out there that sell kits which can sense when your meth lines run dry and instantly switch to a non-meth tune, potentially saving your engine.
^ regarding what Jon said if you are interested in a meth kit shoot me a PM, we run the aquamist systems and they seem to work very well.
With the flow meter, pressure readings, and a wideband, the only way you can blow your car up is if you let it happen.
Scorke