What did you do with/to your Boxster today?

[Qingdao]

Originally Posted by ike84

Installed 82mm title body with a 3.5" short ram cold air intake

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Not to be negative, but one of those intakes is right next to the coolant tank. That coolant tank gets kinda warm; hence the heat shields that attach to the carpet that normally surrounds the tank.

Is this a "racecar"? Have you thought about gutting your tail lights (like dodge did with the headlights) for an intake option? Or removing the back bumper to pickup on some of the vacuum of air in the rear of the car and directing it into your intake?

I too am working on a "cold air" intake on my car. I sealed off the left side intake and cut a hole in the top of the tube so I can feed my intake ducting. That convoluted sentence is more clear in person, but it has served to lower intake temps a bit.

[ike84]

Originally Posted by Qingdao

Not to be negative, but one of those intakes is right next to the coolant tank. That coolant tank gets kinda warm; hence the heat shields that attach to the carpet that normally surrounds the tank.



Is this a "racecar"? Have you thought about gutting your tail lights (like dodge did with the headlights) for an intake option? Or removing the back bumper to pickup on some of the vacuum of air in the rear of the car and directing it into your intake?



I too am working on a "cold air" intake on my car. I sealed off the left side intake and cut a hole in the top of the tube so I can feed my intake ducting. That convoluted sentence is more clear in person, but it has served to lower intake temps a bit.

You are right about the expansion tank getting warm. I used to put oatmeal and milk in a baggie, setup it in tip of the tank before leaving for work, and 20 min later I had oatmeal!

No, it's not a racer. It's my daily driver. This is a small part of what I'm calling my GTR (GT renegade) build - the end result will be a stripped down twin turbo that retains comfort creatures that define the Porsche brand. I'm trying to create what I would think porsche would do with this setup if they were really trying to maximize performance with this platform.

Anyway, there will be a lot more to go. I posted this part purely because I've never seen anyone mount an 82mm TB on our cars (regardless of engine displacement) so I just wanted to show that it can be done lol. Plus, our stock intake is a joke. The breather system in our cars is horribly undersized. I won't get into all the science about it and I know there are guys who will swear up and down that messing with intake and exhaust will kill ponies but I'm just not buying it.

The main reason I brought it through the trunk is for the TT setup that is down the road. If I wasn't doing that then I would have routed a single 3.5" intake along the passenger side of the bay and out the left port (after engine ground strap and oil fill tube have been relocated, SAI and engine bay fan deleted). You can even go so far as to mount scoops over the ports and create a ram air intake (think GT40). This is on my list as well as that is where I am going to mount heat exchangers for my intercoolers. Again though, down the road...

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[new986owner]

Could you give me a few pointers? i am new to porsche, came over from street bikes.
i have a 3.4 liter 987 plenum and 74mm tb. are these bolt on to m96 3.2 liter 986?

i am stumped how to repipe the 986 boxed air intake to the larger TB, and it seems fortunate timing y'all are also modifying recently.

[ike84]

My build thread is posted over in the DIY section. I doubt that a 74mm TB will bolt on to a 3.2 but it wouldn't be that difficult to do so (74mm = 3" which is what the stock intake pipes should be). If you do that though I would remove the spec airbox and fab a new CAI, the boxes on our system are very restrictive. As long as you don't change the MAF housing size you can do this without making any ECU upgrades, although a tune will be of help to get the most out of it. You can find a ton of info about this stuff on here.

[Stroked & Blown]

Originally Posted by new986owner

Could you give me a few pointers? i am new to porsche, came over from street bikes.
i have a 3.4 liter 987 plenum and 74mm tb. are these bolt on to m96 3.2 liter 986?

i am stumped how to repipe the 986 boxed air intake to the larger TB, and it seems fortunate timing y'all are also modifying recently.

The generally accepted approach is to use the 987 airbox. This is a better design and was used on the 986 550 SE to increase the HP of that model. There are a couple threads on this board on how to modify a 987 airbox to fit the 986.