How can i tell what my sns chip is spec'd for

[flusted 0]

So my car has been running lean for a while now, so i put standard pulley and chip back in last night and most of the problems have gone away 8)

Im wondering if the sns chip i have is mapped for red tops?

Its a stage 5?

[steveo29 0]

if its got any numbers on it then ask bilal at sns or gwerks

[flusted 0]

here we go

[flusted 0]

From reading Vortex, they seem to say stage 4 is cam, 68mm pulley and 3.5fpr so does that mean stage 5 is 65mm pulley and red tops?

Also whats the crack with 5.2, 5.4, 5.5 sns chips?

Need to know as want to fit my 65mm toothed kit and want red tops and chip to match before i fit