[jb's335]

Originally Posted by Syndicategt

We need more thinking like this around here, instead we get which downpipe is better threads.

Nice work on the partial heat shield

+10000000000000

lol...I'm ready for more single turbo builds.

[spool twice]

Originally Posted by skim7x

Not bad. 'A' for effort. Do some logs and then I'll be a believer.

Will be coming soon. Having temps top out in the lower 70's this week will skew the results slightly so I want to wait until the forecast is about 86F (I've had IAT's in stop and go as high as 148F in this type of weather).

I'll do comparisons with the DCI+Cover vs. DCI only in stop and go between my car and my brothers car (JB4+DCI+METH) in the same traffic conditions without any meth injected.

Originally Posted by Todd135i

If you look at the last picture, the entire driver side of the box is cut off and open. Plus you have the intake ducts. Definitely no restriction.

I know where I can get a stock airbox for $50. I may have to try this

Correct, the filter has the same exposed filter surface area as not having the cover in place. The cover hovers and doesn't touch the filter, and the bottom of the airbox does not contact the filters in anyway.

[pavo335]

anyone thought about a cutout in the bonnet with a subtle flush mount grill? The reason I ask is with all the debate about hot air DCI and colder restrictice OE airbox. What if you have a modified stock airbox that links to the flush mount grill in the bonnet? you get the benefit of the heat shield and the benefit of cold air intake???

[spool twice]

Originally Posted by pavo335

anyone thought about a cutout in the bonnet with a subtle flush mount grill? The reason I ask is with all the debate about hot air DCI and colder restrictice OE airbox. What if you have a modified stock airbox that links to the flush mount grill in the bonnet? you get the benefit of the heat shield and the benefit of cold air intake???

There is room in the drivers side front wheel well for a good size filter and tubing if you don't mind doing some cutting of plastic peices.

In the end, it may or may not be relevant because IAT's may not be too different than a HADCI when the car has sufficient airflow. There are results from both camps (DCI or CAI) that show better results than the stock airbox alone, but also some that show worse. It's up to you to make the decision

[Syndicategt]

Originally Posted by pavo335

anyone thought about a cutout in the bonnet with a subtle flush mount grill? The reason I ask is with all the debate about hot air DCI and colder restrictice OE airbox. What if you have a modified stock airbox that links to the flush mount grill in the bonnet? you get the benefit of the heat shield and the benefit of cold air intake???

This is why I did a Mr. 5 (Dinan) style airbox. I ran a 3" pipe down to the front bumper inlet with a cone intake on the end, at the same time keeing the stock airbox. It's the best of both worlds, less restrictive than a CAI and sucking in cooler air than a DCI.

See my DIY:
http://www.e90post.com/forums/showthread.php?t=549965

[PiZauL]

Good idea, I thought about doing this but never commited. Glad you did, looks great!

[Gunzaro]

Good thinking outside the box, but I doubt this will do much for performance - needs to be fully sealed.

[spool twice]

Originally Posted by Gunzaro

Good thinking outside the box, but I doubt this will do much for performance - needs to be fully sealed.

The idea behind this isn't to enhance anything but the aesthetics aspects and covering up the rib structure of the intake manifold.

[Todd135i]

Hey Spool Twice
I'm going to start another thread tonight (possibly or just continue posting on yours) but I'll reference you either way. I'm taking your idea, leaving a little more plastic and then doing some tests. I've already got it almost finished and fitted.

I know your idea was just to hide the DCI's for cosmetic purposes, but I think you may have inadvertently came up with a decent way to steer the outside ambient air directly at the DCI's. The duct by itself just lets the cooler air bypass most of the DCI and just mix with the hot under hood air. I'm hoping that maybe with scoops, this may drop AIT's slightly.....While moving at speed of course. Without scoops, I don't think it would matter at all. I'm sure we've all seen the video of the guy with the blower pointed at the front of the car without scoops and then with scoops.

This may all be for nothing, but who knows unless you try

[benzy89]

A for effort... IMO its basically a "budget" aFe intake if you install the BMS DCI & leave just the bottom of the OEM airbox in

[benzy89]

Originally Posted by pavo335

anyone thought about a cutout in the bonnet with a subtle flush mount grill? The reason I ask is with all the debate about hot air DCI and colder restrictice OE airbox. What if you have a modified stock airbox that links to the flush mount grill in the bonnet? you get the benefit of the heat shield and the benefit of cold air intake???

I dont think anyone wants to chop their OEM hood up & throw off the structural integrity of it. You'd be better off buying an M3 hood/aftermarket CF hood with air vents cut into it.

The only tru CAI systems are the STETT, UR & Dinan options. The next closest things after that are the Mr5 intake & the Helix intake, which both modify the stock box to get the benefits of both a DCI & CAI system.

[Evelyn]

Kinda defeats the purpose. Does not look right

[spool twice]

Originally Posted by Todd135i

Hey Spool Twice
I'm going to start another thread tonight (possibly or just continue posting on yours) but I'll reference you either way. I'm taking your idea, leaving a little more plastic and then doing some tests. I've already got it almost finished and fitted.

I know your idea was just to hide the DCI's for cosmetic purposes, but I think you may have inadvertently came up with a decent way to steer the outside ambient air directly at the DCI's. The duct by itself just lets the cooler air bypass most of the DCI and just mix with the hot under hood air. I'm hoping that maybe with scoops, this may drop AIT's slightly.....While moving at speed of course. Without scoops, I don't think it would matter at all. I'm sure we've all seen the video of the guy with the blower pointed at the front of the car without scoops and then with scoops.

This may all be for nothing, but who knows unless you try

IAT's so far a negligible from stock airbox logs (both still approach 130, +/- 1-2 degrees, while in traffic in Florida heat). Sitting at idle in my driveway yeilds very little difference in IAT's between the two. I have not logged without the cover off yet though, but I really have no interest as I feel my modification served its purpose for my needs (aesthetics only). I have thought about eventually adding an extra duct routed to the filters since I have a foglight and foglight bumper trim delete on my M-tech front bumper to see if that lowers IAT's while driving, but meth does the job quite well when I need to go WOT

Please do post your results when you put on the scoops