Never had any problem with the ZEX kits. Nitrous Outlet has a lot more supporters here, and rightfully so. They make great kits as well. I have used their kits on customers cars with no issues. I used ZEX on mine and love it. My biggest point is there are more than one good kits out there. See what your shop or tuner recommend and have fun beating up on the cars that are afraid to use these "junk" nitrous kits
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2011 Camaro SS/RS M6 - 633whp/679tq Gave to the wife
Custom stainless 2" primary headers / Custom stainless 3" header back exhaust / Hurst short shifter / ZEX nitrous kit / Vararam intake / Spohn chrome moly trailing arms / Sin City Performance Tune / SCP custom ground cam / SCP ported & polished heads
New Car 2007 Corvette Z06 - Headers / Vararam / Magnaflow Catback / SCP Tune / Nitrous / BTR Stg IV Cam and Springs