new to the ls1tech. just got a 94 z28 and i was wondering if i can buy a used hpp and if i have an obd1 or obd2. thanks

 

your car is obd1. hpp sucks. wait till you need a tune and the get a shop to use lt1 edit or that kind of program to dyno tune it for you. even if you just have a full intake and exhaust set up, (cold air, throtle body, headers, catback) a tune will make a good difference.