Intake plenum and 911 throttle body

[eddy]

This has the potential to be a very cost-effective upgrade. Ben's put a lot of time in and I'm excited to see what the gains are as-is, and if he wants to incrementally improve from there I am all for it. This is a great example of someone in the community filling a void!

[heymanwatchthis]

I wonder how much impact this mod (plenum + 74mm TB) has using stock 986 airbox vs the 987 airbox?

[Gelbster]

Originally Posted by heymanwatchthis

I wonder how much impact this mod (plenum + 74mm TB) has using stock 986 airbox vs the 987 airbox?

This is a good question because clearly the 987 air box is a huge pain and will deter some potential customers.

[eddy]

Originally Posted by Gelbster

This is a good question because clearly the 987 air box is a huge pain and will deter some potential customers.

I agree. I thought about doing some testing with the 986 but ultimately decided that I wanted to just jump to the 987 box. I thought about other intakes but liked the fact that the 987 box is not open to the engine bay.

I'm sure it can be done more cleanly, but I had to bend the edge of the access area. I also elected to not cut the part of the body that buts up to where the box makes its turn, meaning that fitment isn't perfect. Just a bunch of little headaches that I'm fine with but wouldn't encourage others to dive into.

Progress update: box is in, plenum is in. Decided to get a silicone reducer to facilitate the MAF setup, so I've gotta wait till that comes in and then plumb the route to the TB.