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From reading what the site says it looks to me like another way of saying :TB coolant delete, siameese runners, frisbee removal, burning a new chip/prom, etc. etc . 65z01 right here on the forum has all those listed (and more).
Others like Nathon Plemons and vader 86 web sites goes through all the same stuff plus other REAL mods. and combinations.
How to get 100 additional Rear Wheel HorsePower from your C4/c5:
Materials:
1 NOS Nitrous Solenoid
1 Nitrous Line
1 Nitrous Jet
Plug nitrous line into intake tube
WOT, Push Gas and Button