986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Installing Pedro's Hi-Flo Air Intake 986 2.5L

geekdaddy · 07-12-2019, 01:27 PM

I did the Crios mod on my 1999 2.5 and desnorkled it. Still very tame and reasonable quiet but has a better rumble and snarl from the exhaust and intake.
I like the idea of removing the baffled OEM intake to increase and improve the sound during acceleration.
But I don't like the idea of using materials that may potentially fail in the application.

So I've sourced a stainless steel tube and cut it to size.
https://www.amazon.com/gp/product/B07BK23C2N/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1
I also sourced some 3 inch silicone elbows, stainless clamps, and hi-temp insulation.

After trial fitment, I found the throttle body and air filter exit/MAF diameters are slightly larger than 3 inches. The elbows I sourced were built with 4-layer reinforcements, so they are not flexible enough to fit over them and secure with clamps.

I expect the plumbing elbows that Pedro recommended are flexible enough to stretch and fit. But they are also very large and not made of silicone. They may be good enough but I'd like to find something that enables a more compact fit and would prefer flexible high temp silicone.

I've located some non-reinforced silicone elbows that may work. After they arrrive I'll trial fit them. If I'm confident that everything will fit securely, I'll take some pics and share photos and links of the materials I used.

07-12-2019, 01:27 PM	#27
geekdaddy Registered User Join Date: Oct 2018 Location: New England Posts: 58	I'm working on it I did the Crios mod on my 1999 2.5 and desnorkled it. Still very tame and reasonable quiet but has a better rumble and snarl from the exhaust and intake. I like the idea of removing the baffled OEM intake to increase and improve the sound during acceleration. But I don't like the idea of using materials that may potentially fail in the application. So I've sourced a stainless steel tube and cut it to size. https://www.amazon.com/gp/product/B07BK23C2N/ref=ppx_yo_dt_b_asin_title_o05_s00?ie=UTF8&psc=1 I also sourced some 3 inch silicone elbows, stainless clamps, and hi-temp insulation. After trial fitment, I found the throttle body and air filter exit/MAF diameters are slightly larger than 3 inches. The elbows I sourced were built with 4-layer reinforcements, so they are not flexible enough to fit over them and secure with clamps. I expect the plumbing elbows that Pedro recommended are flexible enough to stretch and fit. But they are also very large and not made of silicone. They may be good enough but I'd like to find something that enables a more compact fit and would prefer flexible high temp silicone. I've located some non-reinforced silicone elbows that may work. After they arrrive I'll trial fit them. If I'm confident that everything will fit securely, I'll take some pics and share photos and links of the materials I used.