
Originally Posted by
Echonova
You might not like what I have to say...
I had a CRX with a B16 and got a Zex kit when they first came out. A 50 shot netted a whopping 23 more @ the wheels, 75 brought it up to 49 more... Plus I went through two of the "control" boxes because they wigged out and if I armed the master switch it was spraying. Ended up ditching it and going with a NOS system.
Now to Zex's credit they sent me a new box each time, and I'm sure they fixed the problem (again, they were brand-brand new when this happened) or they wouldn't still be in business. Really "user" friendly system and easy to set-up, although the box takes up a bit more room than other systems. I did however LOVE their purge valve. Worked better than any other brand.
But back on topic: 50 shot you could get away with running a colder plug and that's about it. For a 75 I would run 2 steps colder plugs and dial back your timing.