I am thinking of uping the shot to 65 with my zex dry kit, BUT I do not have an upgraded ignition, only one step colder plugs.
I figure a 65 shot from zex is probably only like a 45 shot to the wheels, so if the zex guys can do it with just plugs at a 50 shot than I should be fine to do the same.
I've been using a zex 65 shot on my ss lude for quite some time now. It's been almost two years in fact. You should be fine w/out the ignition. I am using zex plugs on my car and I love them. I know some people say they suck but I have had good experiences with them. My current mods are I/H/E/P/Zex plugs/65shot. Also, over here in El Paso, the highest octane gas they have is 91. So I've been running a 65 shot w/ only 91 octane gas and haven't had any kind of problems. Just check your plugs if you try it and see what they read out.
A little "minor" detonation wont kill you engine...any more than a little will start breaking things.....just dont detonate...thats no good.....you should be fine without an ignition......Id say up it!
you should be fine with one step colder plugs and a 65 shot. Hell, I'm running an NX 50 shot (should be close to a 65 shot of ZEX) on stock plugs and a slight timing retard and don't have any detonation.
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