hello everyone. im new to the group, i just bought a 03 silverado extend-cab. i was wondering if any one in the group can let me know what performance product's realy work, for instance power programmers, air intakes' underdrive pulley's, exhaust system's ( can i do a duel and still be smog legal ? ). i cant afford a super charger, and dont like the instability of nitrous. so i need to know what are "the best bang for your buck mod's" please let me know what your experience's have been. thank's will check back soon ?.
5.3 hi-po mod's what works ?
Aug 18, 2003
2 Replies