The Roto-fab intake is well proven with the ZL1 crowd-both without a tune and with major modifications. It's a great start no matter how far you are going with your mods. We've had this intake on the market for about 3 years and there are literally thousands of ZL1s out there using our system. We have several reputable dealers on this forum and on this thread in particular that can or have shared their experience with our intake system.
Our testing showed about 25 HP gains with the intake alone. Many customers have reported 30 HP gains. Keep in mind this is with the intake alone. Once you start combining a tune and/or other power additives you are no longer comparing "apples to apples".
Several of our dealers offer performance packages using the Roto-fab intake system. The gains vary based on the package, but 75 HP is very attainable and affordable. Of course, ZL1s using our system have exceeded 1,000 HP! These packages are also attainable, but not quite as affordable!
In addition to the Roto-fab CAI system itself, we offer the Big Gulp adjustable air duct, two versions of W/W reservoir relocation kits and a variety of cosmetic engine compartment products.
