[heymanwatchthis]

I have found this mod to be wonderful! I did what is mostly this mod about 300 miles ago - I installed a 997 TB and plenum while keeping the stock 986 air box. I have a 986S with 2nd cat deletes, Crios mod muffler, and UDP. Also have a fresh MAF and spark plugs.

Just updating the throttle body and plenum has yielded fantastic gains for me - although subjective (no dyno) it is clear the car has increased power throughout the rev range and is much more responsive. My car always had great power above 5k rpm however was a little flat under 4k, as if it was waiting for a turbo to spool up. I wanted more uniform power delivery. With new TB and plenum it feels like I have a new engine - really opens it up from lower RPM's and loses much of the 'choked down' feeling. Character of engine feels more like a 911.

I am sure that Ben's plenum will bring great results as his design has smoother curves - and be easier to install. This is an easy, cheap mod that is highly impactful and one that I recommend.