82 mm throttle body

[ike84]

Originally Posted by itsnotanova

The dme is tucked up under and I've never seen the need to. I've had boxsters at my yard with no trunk lids and the dme stayed dry even during the worst rain storms. The immobilizer I do have inside a bag and disconnected from the floor though. I have it sitting upright between the rocker panel and seat. I also have holes drilled in the floor so water cannot collect inside the floor pans. So far everything is staying dry. Before I reinstalled the windshield, the fuel gauge would stop working when it would get rained on. Immobilizer aside, these cars are pretty solid electrically. I've power washed the whole car inside and out. I wouldn't recommend cleaning the interior of your street car with a power washer. lol

That's good to know! I'm a huge fan of rhino lining the interior of off-road vehicles, but I'm going for a bit more a subtle look lol.

If you get on Amazon there are a ton of aftermarket hood and side scoops. They're primarily used by wannabe ricers but can function as a real scoop and they don't cost much. Instead of raising the trunk lid you could just cut a giant hole in it and mount a scoop over the hole. Kinda the poor man's version of your pic earlier. The aero images of our cars that I have seen show that to be a relatively low pressure area but I'm sure it can't hurt.

On a side note, when you flashed to 996 row, did your 986 guages still work appropriately? Whenever I get an hour off of daddy day care this is next on my list to do. I've read some say everything was fine, I've seen other say not so much. Reading wayne's article on cluster swaps it seems like after flashing to 996 I can go back through piwis and actually change the cluster back to 986 while keeping the 996 tune, but I haven't seen anyone actually detail doing this.

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[itsnotanova]

Originally Posted by ike84

Instead of raising the trunk lid you could just cut a giant hole in it and mount a scoop over the hole. Kinda the poor man's version of your pic earlier. The aero images of our cars that I have seen show that to be a relatively low pressure area but I'm sure it can't hurt.

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This "computer generated" aerodynamic picture somewhat shows what I'm talking about. That one line that starts on the hood and flows along the top of the door is close to what I see water spots do on my street boxster after driving in the rain. On my car it takes a sharper turn after the B pillar and flows right above the front corner of the trunk.

[ike84]

Originally Posted by itsnotanova

This "computer generated" aerodynamic picture somewhat shows what I'm talking about. That one line that starts on the hood and flows along the top of the door is close to what I see water spots do on my street boxster after driving in the rain. On my car it takes a sharper turn after the B pillar and flows right above the front corner of the trunk.

That's been my experience too. I actually dont mind driving with my top down in light rain so long as I'm above 35 mph because the aerodynamics keep the cockpit dry lol.

I wonder if it would work well to put a louvered panel or scoop along the top edge of the quarter panel to catch that line along the side. It shouldn't be difficult to route that air into the trunk and based on your racing pic it would probably be pretty clean and slightly pressurized at speed.

One thing I'm getting ready to do is to add a gt style spoiler (purely for look, guilty). With that in place though I think I will remove the stock spoiler assembly and cover that opening with a gutter guard that has a diamond mesh pattern. There won't be any ram air effect, just one more way for the trunk to "breathe" as I continue to add more stuff back there.

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[itsnotanova]

If I stay with the M96 motor, then I was going to use this scoop. By what I could tell from a rough measurement it should fit without too much modification to the roof. I believe it would fit through the rear window and the intake would be just above the top of the roof. About right where the red line turns to blue in the aero pic

[ike84]

Originally Posted by itsnotanova

If I stay with the M96 motor, then I was going to use this scoop. By what I could tell from a rough measurement it should fit without too much modification to the roof. I believe it would fit through the rear window and the intake would be just above the top of the roof. About right where the red line turns to blue in the aero pic

That should do it. I would definitely try to get the horizontal aspect of that as far forward on the roof and possible so that it's not right at the break line where air separates from the roof line. It may be worth it to place some vortex generators in front of it too to keep as much air in their line as possible. How are you gonna duct the air into the inlet from that point though? Are you gonna plumb it to the TB or just use it as a breather for your filters?

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[itsnotanova]

Originally Posted by ike84

That should do it. I would definitely try to get the horizontal aspect of that as far forward on the roof and possible so that it's not right at the break line where air separates from the roof line. It may be worth it to place some vortex generators in front of it too to keep as much air in their line as possible. How are you gonna duct the air into the inlet from that point though? Are you gonna plumb it to the TB or just use it as a breather for your filters?

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I was going to turn the intake tube with the TB as far forward as possible. I'm hoping the air filter will fit within the area after the neck.

[ike84]

Originally Posted by itsnotanova

I was going to turn the intake tube with the TB as far forward as possible. I'm hoping the air filter will fit within the area after the neck.

That would be sweet, just plastiweld it to the top of the engine cover and route everything up. If it's the right size and shape that will be a hell of an end result! It will be tricky to get it through the back window though, maybe cut it in two, pass it through the window, and then plastiweld back together? Or just fab up a 2 piece window that assembles around it.

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[ike84]

Originally Posted by itsnotanova

I was going to turn the intake tube with the TB as far forward as possible. I'm hoping the air filter will fit within the area after the neck.

Hey woody, question for ya. I've been running now for a few hundred miles on this setup with 996 tune and big exhaust and I noticed that the car now likes to move! More specifically, around 4200 rpm at WOT she pushes me back in the seat, which I don't ever remember happening before. Weirdly though, it doesn't happen every time I pass 4200rom at wot. I can't quite pinpoint what is contributing to this happening (or not happening). I'm wondering if maybe the DME is still figuring stuff out.

I know most of your driving is dirt track, but I'm curious about what your experience has been so far? Big gains at high rpm? Are gains always there?

Btw, how's the shop build going?

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