I will be interested in your results. BTW, FVD also makes their exhaust with 200 cell HJS cats so they are an option for anyone wanting the stage 2 GIAC tune. I hope to get dyno results on my FVD boltons with IPD plenum and no tuning to see how the combination of passive mods affects performance. Then I will see what the difference is with both FVD piggyback and then Cobb Stage 2. That is the plan or so I have been told.

 

That would be fantastic and extremely valuable to all of us. I love before and after comparisons. Unfortunately there's no consumer reports magazine for tuning so this is really the only way to separate tuners' claims from reality and see what is true and what is not.