yeah, that's called "detonation". but, if you install the kit correctly, and operate it correctly, you should have no problems. anyway, you should use a dry kit for your motor because of the intake setup on your motor (which i assume you have if you bought your kit new). the long intake runners can create puddling with a wet kit, and that leads to detonation. dry kits use a fuel riser to add more fuel to your system when you spray by dropping vaccum pressure from your fpr.

you need to find out what hp level your kit is designed to make for your particular car. also, find out how much fuel pressure you need to have to run a 65 shot and make sure you can achieve that level. you may actually need to get an aftermarket fuel pressure regulator to accomplish this, though it's very likely you won't need to go to that extreme with only a 65 shot.

btw, i'm going on info from NOS. that's the only kit i use. they have been in business for a long, long time afterall...