Planning installing a 75 shot wet Zex nitrous kit, can the 2.5L motor and cvt tranny handle it? I wonder if anyone did this yet, any input is appreciated
I have had experience with nitrous, just not on your application. Since it was answered that you have an auto tranny, I can tell you that you WILL want do two things to preserve it.
1) Get a transmission oil cooler installed. Before you start doing anything with the nitrous itself, this is very, very important. Your clutchpacks will heat-up between gears and you can kiss it goodbye. This is fairly cheap can can be done at most shops.
2) If you can, get a valve body job (shift kit). Or something else to help your car shift as quick as possible. The more time spent with your clutchpack slowly engaging for smooth, comfortable granny shifts, the hotter they will get.
As for the nitrous on the engine,
4 cylinders typically are good for up to 75hp shots. Start with 25hp shot. Then 50hp shot. I would not go higher than a 50hp shot with a dry nitrous setup. A wet nitrous setup should be good up to 75hp. I haven't read of any 4 cylinder engines failing at a 75hp shot, when everything is running well with air/fuel ratios. Not saying it can not happen but I haven't read about it. I've only used up to a 60hp dry shot on my Subaru Impreza (N/A-Outback Sport) but I also was running 5psi of boost. Never had any issues but I'd never recommend it.