Reviewed By Son N (FAIRFAX, VA) Reviewed for a 2003 Toyota Matrix —4/28/2013 9:33 PM
I have noticed the gain in both horse power and mpg. The CAI and cat back works together to yield best result. Will come back for more stuff
Reviewed By Caleb C (SAN FRANCISCO, CA) —4/15/2015 11:23 PM
Bolted right on, came with o-rings too! I replaced both upstream and downstream sensors with denso. Cleared my ecu with a harbor freight scanner, smogged my car in CA. Fixed my check engine light for less than -$850! Not bad!!! Thinking of getting aftermarket headers with upgraded exhaust with the money I saved!