The VLMspec downpipe comes in 3 configurations.
Option 1 - Race Catless - Full catless and with a selectable dump valve so you dont need to pull your catback at the track for those record setting passes. HP limit is unknown. Midpipes included.
Option 2 - Street Catless - Full catless for normal use with no dump valve. HP will start to suffer at WOT above 900hp. Midpipes included.
Option 3 - Stealth Catless - A modified OEM downpipe for the heavily scrutinized. Visually indiscernible from a normal pipe. Bolt to any oem style mid pipes including 034, CTS, APR, etc. Will support up to 680hp of flow.
Stage 2 tuning is needed to optimize results with a catless downpipe.