Hi Guys For you who are running water inj what size jets do you use? At the moment it is stock TT with chip running 13.5psi boost with 330rwhp / 212rwkw. I have a set of Japtek bigger SMIC to install and I would like to up the boost to 16psi and it has a Greddy Prospec 2 EBC and yes the turbos are stock. Will I need 555 injectors as well or do I go 555 injectors plus hiflow GCG Turbos. Read stock turbo with 28 guts in them. It did start out simply before I started pulling it to pieces:bash::bash:now I don't know where to stop. Cheers Mark:biggrin:
Read this: http://www.twinturbo.net/net/viewmsg.aspx?forum=technical&msg_id=863290&forum=technical&dtSearch=1 16psi is starting to push the stock injectors pretty hard. Depends on your other mods but they are definitely on their limit at that stage.
I'm not sure about the jet size for your water/meth injection however 16psi on stock turbos is out of their efficiency range. They just can't compress that air at a good temperature and the compressor wont provide enough air to the engine at high rpm. It will work, don't get me wrong, but your boost will probably drop off and your intake temps will be higher... although the injection kind of combats that doesn't it!? I would go for a turbo package, rather than a high flow... Yes the core is new but the housing is still the tiny little thing with a small AR. Go for a GT2560R package with some bigger injectors and don't look back!
