RobC4sX51

IPD plenum at the bottom

plenum

Do tell... are you doing the X51 install, or took pics of the part for some other reason?

STG

Thanks nice pics!

STG

I have to find the article again, but I remember the Porsche engineer saying that the Plenum accounted for half of the horsepower gains in the X51.

jimbo1111

Before and after dyno would have bin nice.

Happy911S

Nice pics Good to see because once installed, you don't see.

Bemo

Ok so i'm not mechanically inclined and just read up on this plenum thingy. Apparently it's an air intake distributor credited with adding 15HP at the wheels. I saw some prices around ~1K and some adds claim it was specifically designed for the 3.8L motor. Is this part included on my GTS or can i add it aftermarket for a little extra oomph?

STG

You have the X51 Porsche Plenum on the GTS. You're all good.

The IPD is good for the S models. I'm happy with mine and BMC air filters. Better intake sound inside the car too. Who needs Bose or Burmester?

RobC4sX51

yes, I'm keeping my nicely optioned cab long term and after driving a 2016 991 GTS4 in Aug AND Suncoast put the kit on sale AND my local dealer gave me a contract deal for install, it should be done today! They started Mon the 5th. Here are a few of my pics too. I'm sorry I didn't dyno it b4 & after, that would of been nice I agree.

RobC4sX51

A few more pics:

plenum

I have to admit, seeing the engine "guts" is exciting for me! LOL

How many miles did you have on your cab at the time of install? I've heard that there are some variances in install procedures / requirements based on engine mileage -- curious if this was spelled-out by the work order at the dealer?

Jabs1542

Normally I would say you are sick But knowing you are a take it apart DIY guy I can see how you would react with excitement. For me, seeing raw pistons, timing chains, valve trains, etc. gives me pucker factor.

LexVan

Hey Rob, this is very cool. Can't wait to hear your post operative impressions.

Do they want you to do any "break-in" after the surgery?

Maybe an early oil change after the open heart? Say, after 500-1,000 miles?

Jvmorrow

Very interesting. If you don't mind me asking what was the rough cost of the dealer install?

LexVan

From his other posts, I think the install charges are about $5000-$7000. About 40 hours of labor.