Fitment Information Pontiac Firebird V8 LS1 (1998, 1999) NOTE: Not approved for sale or use in the state of California or other states that require a CARB E.O. # (Executive Order Number). Part number 25017 air filter cleaning kit is recommended when cleaning/re-oiling your filters. Specs & Features The most highly-engineered Cold Air Intake kit on the market! Increased engine performance of over 20 Hp Increased filter size for maximum air flow and reduced intake restriction. Provides additional induction noise and aggressive performance sound High-flow, high capacity, washable and reusable performance air filter(Does NOT require oiling) Excellent filtration properties No PCM re-calibration required, works perfectly with stock calibration Does not void factory warranty Complete system from air inlet to throttle body Easy installation, no vehicle modifications required Includes all necessary hardware and instructions NOT APPROVED FOR SALE IN CALIFORNIA OR STATES THAT REQUIRE A CALIFORNIA E.O. # Product Description New from SLP, the FlowPac® combines our Cold-Air Induction Kit, High-Flow Air-Box Lid, F-Body Smooth Bellows, and Blackwing® Air Filter to create a single, jointly engineered package worth up to 20 horsepower over stock.