TearingRaven

How could these modifications be "unthoughtful" if he made them himself? If you ask me, an unthoughtful modification is dumping a V8 into a Z-car, because EVERYONE does it. What I see here is trial and error, research and development of (heaven forbid) new concepts and techniques. Sure, its not perfect, but is anything at the early stages? Rather than giving your hypertension a workout by yelling about his set up, perhaps the critics should relax, take a geritol, sit in their easy chair and watch a lovely episode of Wheel of Fortune while sipping on a can of Ensure.

This should give you an idea.

The man has a point. If you want to meet your goal of 400+, then you will want bigger injectors all around. Also, I'd like to say thats a beautiful car! Its very hard to find them in that condition AND in that color combination. The best way to learn is to read up on these forums: http://www.z31.com http://www.z31performance.com http://www.88hybrid.com Also check out: http://www.xenonz31.com http://www.redz31.net That should get you started

You'll want to remove the ECU from the car to do the diagnostics. Leave it hooked up (obviously) and you should be able to see the screw. If I remember correctly its in the top.

Yes, I suppose you could give that a try. However, I assume that if the CHTS is out, the timing belt probably needs to be changed as well.

The problem here is typically the cylinder head temperature sensor acting up. Its fairly common on Z31's. What you'll want to do is run your diagnostic codes on the ECU (procedures are listed in the Haynes Manual) and see what you come up with. I'm not going to lie, changing this sensor is a serious pain in the ass. It sits behind the left side cam sprocket. Get back to us on what you find.