[Torqu3]

Originally Posted by nicklockard

Does this make any improvement with fully literate cars?

Read through post #20 and the article that is linked in it. What I could gather is that the airbox is restrictive, but on a stock car, it isn't by much. If I had to guess I'd say 5HP maximum, and even that is unlikely. If you get this for a stock car, it'll mostly be for the wonderful noises everyone talks about.


That said, did we ever come to a consensus on the turbo bark people were hearing? Is there a way to prevent it, since it's bad for the turbos? I mean, if my turbos blow I guess I'll just have to go hybrid, but that is a bill I don't need for a long time.


P.S. Also in that thread, TDI mentioned that scoops did help create a ram air effect and decrease the pressure drop. This is the first time I'm seeing this thread, but it looks like our Puerto Rican friend was right all along.

[Puerto Rican 335d]

I'll be damned Torqu3 Tdi came to realize this Im shocked jajajaja

[ASBSECU E93]

Torqu3 - I think an active thread regarding BOV's is currently discussing this topic.

[nicklockard]

Originally Posted by Torqu3

Read through post #20 and the article that is linked in it. What I could gather is that the airbox is restrictive, but on a stock car, it isn't by much. If I had to guess I'd say 5HP maximum, and even that is unlikely. If you get this for a stock car, it'll mostly be for the wonderful noises everyone talks about.


That said, did we ever come to a consensus on the turbo bark people were hearing? Is there a way to prevent it, since it's bad for the turbos? I mean, if my turbos blow I guess I'll just have to go hybrid, but that is a bill I don't need for a long time.


P.S. Also in that thread, TDI mentioned that scoops did help create a ram air effect and decrease the pressure drop. This is the first time I'm seeing this thread, but it looks like our Puerto Rican friend was right all along.

I'd like to see a dyno plot of without-vs-with on a fully literate car with JR stage II tune.

My opinion is that the BMW 335D's stock ram air is pretty poorly designed. The VW Tdi platform's was obviously much more effective and you'd have no reason to upgrade air path until very heavy stage 4 level tunes and significant engine upgrades. These are much different.

[Torqu3]

http://www.e90post.com/forums/showthread.php?t=1300553

There is the link to the BOV thread for anyone interested. It looks like a great solution, but I'm not too keen on having that oily nastiness getting spewed everywhere. Like it was mentioned, you can wire an on/off switch, but that kinda defeats the purpose of using this to save your turbos. It wouldn't need to be on full-time to cut out the compressor surge.


What I'm thinking, is people mentioned that going from stock airbox to this new one makes them hear noises they never heard before. And some of those noises are good, but barking is not. So are stock cars constantly experiencing compressor surge, and the stock airbox just muffles the sound? That is a little worrisome, and I don't think I have the money right now to spend on this new intake to test out the theory. I'll PM our buddy and see what it costs, and then possibly try justifying the cost for research purposes.

[TDIwyse]

Originally Posted by Torqu3

...
P.S. Also in that thread, TDI mentioned that scoops did help create a ram air effect and decrease the pressure drop. This is the first time I'm seeing this thread, but it looks like our Puerto Rican friend was right all along.

Perhaps the wording and descriptions weren't clear ... but that definitely isn't the conclusion I was seeing. The scoops, with the OEM intake as designed, have a channel volume that is restrictive to the point that the scoops do not help at peak airflow (too much pressure drop due to volume). Part of the improvement and ram air affects that do help are from allowing air to come into the intake that bypasses the OEM routing...

[lnxguy]

Originally Posted by Torqu3

http://www.e90post.com/forums/showthread.php?t=1300553

There is the link to the BOV thread for anyone interested. It looks like a great solution, but I'm not too keen on having that oily nastiness getting spewed everywhere. Like it was mentioned, you can wire an on/off switch, but that kinda defeats the purpose of using this to save your turbos. It wouldn't need to be on full-time to cut out the compressor surge.


What I'm thinking, is people mentioned that going from stock airbox to this new one makes them hear noises they never heard before. And some of those noises are good, but barking is not. So are stock cars constantly experiencing compressor surge, and the stock airbox just muffles the sound? That is a little worrisome, and I don't think I have the money right now to spend on this new intake to test out the theory. I'll PM our buddy and see what it costs, and then possibly try justifying the cost for research purposes.

If these cars were constantly experiencing compressor surge in stock form, you'd think we'd have turbos blowing left and right.

[dmanb2b]

Originally Posted by nicklockard

I'd like to see a dyno plot of without-vs-with on a fully literate car with JR stage II tune.

My opinion is that the BMW 335D's stock ram air is pretty poorly designed. The VW Tdi platform's was obviously much more effective and you'd have no reason to upgrade air path until very heavy stage 4 level tunes and significant engine upgrades. These are much different.

I would too, as that is my current tune, but is that not what Iaknown provided in the dyno graphs in the beginning of the thread on a stage 2+ BPC tune? Perhaps a stage 2 may not benefit as much?

The TDI folks, myself included, were right in that the stock airbox filter set-up was very good and adding a aftermarket oiled cone filter often spelled troubles for VW MAF sensors. I guess I'll find out soon on the BMW as my set-up from Iaknown should be arriving today

[Mrdeezy]

I have Iaknown's helix intercooler. It is incredible. With his background, I doubt he is going to sell anything that is not throughly tested before hand. Yes, intake systems on any turbo engine make more noise. I think that is good.it will not blow up your "ram air compressor wheel" or whatever. jajaj With so much time and money going into my e30 lately. I think I need to get this for the 335d. It deserves it.

[nicklockard]

Originally Posted by dmanb2b

I would too, as that is my current tune, but is that not what Iaknown provided in the dyno graphs in the beginning of the thread on a stage 2+ BPC tune? Perhaps a stage 2 may not benefit as much?

The TDI folks, myself included, were right in that the stock airbox filter set-up was very good and adding a aftermarket oiled cone filter often spelled troubles for VW MAF sensors. I guess I'll find out soon on the BMW as my set-up from Iaknown should be arriving today

Yes, but the posted dyno plot is of an illiterate BPC 2+ car, I gather? Seems like most people posting here have already done full ABC deletes.

I want to know if my literate but mildly tuned car could benefit.

If your car is literate, I'd love to see your before/after impressions (timed 0-60 runs, 1/4 mile runs (average 2 ways before versus 2 ways after dame day) or whatever you can provide. Thank you for taking a leap and sharing your results.

[dmanb2b]

Originally Posted by nicklockard

Yes, but the posted dyno plot is of an illiterate BPC 2+ car, I gather? Seems like most people posting here have already done full ABC deletes.

I want to know if my literate but mildly tuned car could benefit.

If your car is literate, I'd love to see your before/after impressions (timed 0-60 runs, 1/4 mile runs (average 2 ways before versus 2 ways after dame day) or whatever you can provide. Thank you for taking a leap and sharing your results.

My bad...I read your post too quickly....my car can't spell (or read ).

I got the intake for sound and while I drive spiritly, I am at stage 2 because I am shooting for reliability vs 0-60 or drag strip runs. I'll be glad to provide feedback, but unfortunately it will not be anything you will able to measure.

[dmanb2b]

Originally Posted by Mrdeezy

I have Iaknown's helix intercooler. It is incredible. With his background, I doubt he is going to sell anything that is not throughly tested before hand. Yes, intake systems on any turbo engine make more noise. I think that is good.it will not blow up your "ram air compressor wheel" or whatever. jajaj With so much time and money going into my e30 lately. I think I need to get this for the 335d. It deserves it.

Likely my next investment. Iaknown's offered products have been of great value to me.

[TDIwyse]

Originally Posted by nicklockard

...
I want to know if my literate but mildly tuned car could benefit.
...

It's pretty easy to install a filter minder, or other measurement device, to show you what the drop across the pre-MAF intake is doing at full fueling/rpm.

[lnxguy]

I'm pretty sure my oldmans Duramax comes with one built in

[DELETD3]

Originally Posted by shnaggs

Yes bob did this, granted it was a tuned car. He did a run with the stock CAI, then unsnapped the top box left it tilted up and did another run. Can't remember the numbers but there was an improvement.

Also tdiwyse has documented his findings with doing his logging that the stock air box is a restriction on a tuned car.

There is roughly a 10-12whp difference between (stock air box and filter) and the top of the air box open. Bob confirmed this on the Dyno when he tuned my 2010 D with its stage 2+ tune.

[GottaBeKD]

My observations on a completely stock literate car the cone filter (not including any heat shield).
- sound noticeably nicer and meaner.
- low end power compromised significantly assuming due to heat soak.
- top end power felt (butt dyno) same as stock air box.

[Rods335D]

Well I have had the intake system on for a week now driving it everyday.
I like it, well worth the money. Fit is good and well built.
I really like the extra whooshing sound when you get on it and once you let off. Added a deeper sound to the car which was already deep sounding from the custom exhaust.
I can feel the power its adds in the mid and upper power range. My car is stage 3 custom with all the upgrades that go with that from Andrew Rodriguez.

[Puerto Rican 335d]

Rods335d sweet looking thing there

[GodStang]

Originally Posted by Rods335D

Well I have had the intake system on for a week now driving it everyday.
I like it, well worth the money. Fits is good and well built.
I really like the extra whooshing sound when you get on it and once you let off. Added a deeper sound to the car which was already deep sounding from the custom exhaust.
I can feel the power its adds in the mid and upper power range. My car is stage 3 custom with all the upgrades that go with that from Andrew Rodriguez.

Where would one get this nice piece and how much coin would one use?

[dmanb2b]

send a pm to Iaknown

[JTC1]

Finally got around to installing my CAI. Thanks Iaknown! This is a well made quality intake. All in all a very easy install. Hardest part is getting the filter on the MAF, but that wasn't really difficult at all. This mornings drive to work was the first time driving with it installed, so haven't had a chance to really test it out. First impressions are it sounds great! I wasn't prepared for the turbo bark coming out of the engine bay when I first heard it (even though a number of member have reported it), but I like it!

Yes, that is a missing screw in the corner. Managed to drop it in the engine bay. Gotta try and find a replacement. One question. For folks that are running this CAI, how often are you cleaning you filter?

[335stoner]

if the air is getting heat soaked why not line the inside with some jute? I did that on a metal air box once and it made a world of differences with my intake temps.

I prefer plastic air intakes for this reason