Installing Pedro's Hi-Flo Air Intake 986 2.5L

[Lobo1186]

i have done this mod on my car and well... I dont remember that tube there! sorry I cant help but does it look important? where does it connect?


sorry I couldnt hel[ but at least I could give you a bump

[jwade]

Why don't you just call Pedro and direct him to this post. I'll bet he can tell you.

[Pianohawk]

We've been in email contact. The collective experience of everyone couldn't hurt too, right? My wife and I did it! Those extra hoses don't lead anywhere. They're just for sound muffling. Pedro told me to get rid of them with the original intake tube and it turned out fine.

Now we just hope it continues to run the next couple days.... : )

Old Air Intake



Old Air Intake - In Car



New Air Intake

[chaudanova]

How did this turn out? Sound? Power changes?

[Lobo1186]

thats good it worked out well. I like my pedro mod So im hoping you will too. what parts did you use? pvc or aluminum?

[Pianohawk]

Originally Posted by Lobo1186

thats good it worked out well. I like my pedro mod So im hoping you will too. what parts did you use? pvc or aluminum?

We used PVC pipe. Took only 10 inches or so of PVC since the 90 degree rubber elbows were so big. It also took us 5 hours from buying the materials to getting it installed. I wouldn't recommend it to a fellow novice. There is almost NO space to move around in that engine compartment...very difficult to get these new pieces in securely. Of course, this was our first real mod (aside from de-snorkeling and hacking the top relay).

[Pianohawk]

Awesome mod, the sound is amazing! I fixed the J tube, no issues at all now. Going to clean out the TB this week.

Has anyone added a cold air intake filter system with this mod?

[dsisco]

is this the hose thats goes from the TB to the MAF?

want to order just not 100% sure

thanks

http://www.fvd.de/us/en/Porsche-0/Boxster_986-13-41/-/1997/item/item_details/VID_16612144-VCD_56717405-gid_37-sort_4-display_50-item_100856000/ENGINE-Tuning-AirIntake-Power-Flow-Kits-100856000-air-hose-to-Power-Flow-Kit-900mm-x-60mm.html

[geekdaddy]

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.

[Pianohawk]

Originally Posted by chaudanova

How did this turn out? Sound? Power changes?

Surprisingly, the idle is more steady than ever now. The tiptronic transmission is shifting really smoothly now too. Before it used to hesitate slightly when going into 2nd, fourth, and fifth. The sound is louder, especially when I accelerate. It added more bass resonance to the exhaust. Still trying to get used to it.

For now, it seems there may be slightly less power in the higher gears but I was afraid to drive it hard since I accidently disconnected one end of the J-tube trying to get the new intake in. Duct tape is the only temporary solution I had. I'm going to replace the lock on that end or the entire J-tube in a few days.

Give me a week and time for the car to adjust to the greater air flow and I'll post another update. Not sure which changes are permanent yet.