I'll be taking delivery of another 84 300zx (turbo/auto) soon. Once I own this beast and have it all legal, I am supposed to race someone. It's just a gentlemens bet. No money will be envolved, just pride/braging rights. I normally wouldn't be worried, but today I noticed he was installing a +75hp shot of go-go juice . Kid owns an 88-90ish Honda CRX: JDM b16 with intake and exhaust, and now the nitrous. Off the bottle I know I have him, but I want to make sure that it is not a concern.

What can I do to make my car faster that doesn't cost more than... let's say 100 bucks . I already have a boost controller, I will be taking off the air filter and exhaust components, running higher grade gasoline, but what else?

Open to any suggestions.