I'd like to try the V15 turbo in an N/A LH2.4 application because of that wider lobe separation.
I ran the IPD Turbo and the V15 NA in my car before the head work. The exhaust and intake may have changed between the runs, and tuning, but you have the dyno charts to look at if you want. I think I only ran the IPD T 2? advanced though, and they may not have been made in the same gear, and the V15NA pull wasn't started at low rpm, so I don't know how helpful my info will be.
How's the idle quality in that n/a car? Does it have just a little bit of a lope to it or is it factory smooth?
It was still very smooth I think from my experience, no problems passing emissions testing what so ever with the factory cat. It's less aggressive than a K camshaft anyway. I may have more info on this website somewhere from when I tried both out in many of my previous posts from running those two cams over 10 years ago.
Quick cam question for your folks. Unless I'm mistaken I believe a cam with a higher lift allows more air to flow in. To me that means that more fuel has to go in as well. The MAF somehow sends in the proper amount of fuel based on the air. Is that correct? If so then will LH 2.2 system work with a Enem V15 cam? Or will it be running lean? From what I know the LH 2.2 system is not tunable.
LH2.2 will be fine with it. As previously mentioned, the MAF will compensate for the increased airflow. The only issue is that it will probably be on the leaner side of things as LH2.2 tends to be that way. You may want to get a wideband oxygen sensor and see what it's doing(14.7:1 is stoich and good for emissions and gas mileage, but not for power - you'll want to be between 12.5-13.5:1 for power). One way to richen LH2.2 up is using a higher pressure fuel pressure regulator. Yours may have a 2.5bar regulator on it, so you might be able to swap in a 3bar regulator from a turbo(?) or LH2.4 car and see where that gets you.
Lh2.2 also permits the easy ignition timing advance just by rotating the distributor. You can't get that with stock LH2.4, but if you get an Ostrich Emulator and TunerPro, you can adjust to match your setup even better. I wouldn't say 2.2 isn't tuneable, though! My 1987 244DL did a 17.3 1/4 mile if I remember correctly, just from setting the valve clearances tight on a T cam with it retarded 4?, premium fuel, advanced ignition timing and the hot air intake disabled and turned into an additional cold air intake. Automatic transmission and all!
You can use slightly larger injector, Ford brown top injectors are what I used (pm me if you're interested in buying my used ones) with 2.2 but you have to adjust the maf for it to idle and cruise properly. You'll also need a wide band O2 sensor, it will make it much easier to adjust the maf.
Assuming the car is a turbo, which it very well may be, it just was never stated. My comments above mostly still apply, though.