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Speedster986 · 03-01-2013, 07:29 PM

I'm new to the Porsche Brand, but itching to try my next mod.

My first mod consisted of a "simple to install" bolt-on plenum that replaces the original stock plenum by Peak Aire Performance, which has yielded 36 to 37 MPG highway driving ( see pic ) & 20 to 23 MPG city.

Not sure if these MPG ratings are good or bad, however the original sticker price label when the car was sold read - 20 City 29 Highway - Comments Welcomed!

Question:

Has anyone successfully increased the size of the stock TB & Intake Plenum from 68mm to 74mm?

I would like to combine the increased performance from the first mod with a larger plenum & TB from a different Porsche model.

Does anyone have the recipe for this "DIY" cocktail?

03-01-2013, 07:29 PM	#1
Speedster986 Registered User Join Date: Feb 2013 Location: So. Cal Posts: 24	Typical MPG for a Boxster 03 2.7L I'm new to the Porsche Brand, but itching to try my next mod. My first mod consisted of a "simple to install" bolt-on plenum that replaces the original stock plenum by Peak Aire Performance, which has yielded 36 to 37 MPG highway driving ( see pic ) & 20 to 23 MPG city. Not sure if these MPG ratings are good or bad, however the original sticker price label when the car was sold read - 20 City 29 Highway - Comments Welcomed! Question: Has anyone successfully increased the size of the stock TB & Intake Plenum from 68mm to 74mm? I would like to combine the increased performance from the first mod with a larger plenum & TB from a different Porsche model. Does anyone have the recipe for this "DIY" cocktail?