[BM3Rrrr]

I've done a lot of research on this regarding the benefits vs the stock air box.
Terry at BMS did some pretty good testing with stock vs DCI to reveal that there is little to no increase in IAT's between the two at idle and under load.

Link here:

https://www.n54tech.com/forums/showthread.php?t=23993

Understandably the weather here in Aus can get pretty hot in summer (especially in WA).
I would like to know what people here are running and what they prefer from experience with different products.

[BM335M]

Higher intake temp = less power
I run the stock Air box for FBO power goals, good luck keeping the IAT normal in start stop traffic in summer with DCI and stock intercooler.

[BM3Rrrr]

From what I have read the DCI is useless without an upgraded FMIC (which I have) and no tune. As soon as you run a tune (MHD/Jb4) and increase boost levels from stock is where you would see gains over the factory airbox.

The higher IAT's at idle in traffic would be close to the same with either stock or DCI as there is no airflow passing through the engine compartment.
Again this is just what I have read in research but it makes a lot of sense.

[TheMidnightNarwhal]

Originally Posted by BM335M

Higher intake temp = less power
I run the stock Air box for FBO power goals, good luck keeping the IAT normal in start stop traffic in summer with DCI and stock intercooler.

Who cares there is not time to floor it in stop and go traffic anyway.

For 100$ the sound alone is worth it IMO.

[BM335M]

I would install them for sound only as well, yet to be convinced they do anything else apart from inhaling hot air from the engine bay.

[EB89]

This again.

Just buy it, no one will convince your otherwise, we dont need to create thread 1000 on on intakes for this platform.

[EB89]

Now im actually reading your linked thread

"I mean with the car tuned to target around 28psi. Run with the stock airbox and make around 400whp. Run with the DCIs and you can make around 500whp. With no other changes."

Terry claiming 100hp increase with DCI's wtf

[BM3Rrrr]

Originally Posted by EB89

Now im actually reading your linked thread

"I mean with the car tuned to target around 28psi. Run with the stock airbox and make around 400whp. Run with the DCIs and you can make around 500whp. With no other changes."

Terry claiming 100hp increase with DCI's wtf

Yeah I had a good laugh over that as well

[BM3Rrrr]

Originally Posted by EB89

This again.

Just buy it, no one will convince your otherwise, we dont need to create thread 1000 on on intakes for this platform.

Not meaning to start another debate, I guess I should have renamed the thread title DCI opinions. I am going to buy one at the end of the day.

More just wanting personal experiences from Aus members only.

You are right thought there is about 1000 threads on this...........

[BM3Rrrr]

Plus I though it might get people fired up a bit around here

[The Blimp]

Yeah, I’m hestitant to believe the results of testing conducted by the guy selling the product.

Those mr 5 intakes are the best of both worlds so just do one of those

[BM3Rrrr]

Originally Posted by The Blimp

Yeah, I’m hestitant to believe the results of testing conducted by the guy selling the product.

Those mr 5 intakes are the best of both worlds so just do one of those

I just don't feel like cutting a hole in my airbox and running some ghetto tubing down the side of the engine.

If I ever go to sell the car I would prefer to be able to put it back to stock.

[WeekendWarriorz]

Stock airbox on FBO is an absolute joke. Take a log of your WGDC before and after a DCI install, the stock airbox is fine for sub ~400whp. It'll allow you to run more boost and add more fuel to make more power, especially in the midrange. All the n54's you see pushing 440+whp stock turbos are running DCI's for a reason, the intercoolers job is to cool the air but you need to suck in more of it regardless of the temperature, and aside from that get intake scoops and it'll shove more cool air into them.

[jzx_andy]

I'm running my DCI purely for the sound.

From what I've read, changing the intake makes zero difference with respect to feel or responsiveness at any power level with the stock twins. Maybe they make a little more peak power when comparing happy US dyno figures, but I would take that with a grain of salt and ask whether that can be proven with a higher trap speed on the 1/4.

Don't really care about reducing wgdc given how crappy the stock turbos are in terms of reliability - as long as they're making power and there's wgdc headroom, I'm happy.

Originally Posted by BM335M

Higher intake temp = less power
I run the stock Air box for FBO power goals, good luck keeping the IAT normal in start stop traffic in summer with DCI and stock intercooler.

Good luck keeping IAT's low in summer stop/start traffic with a stock intercooler and any intake

[vtl]

People buy intakes for the noise and the marketing pseudoscience from the vendors.

tawfeeqh was runing 360-370rwkw on full E85 and trapping over 130mph on the stock airbox. Ran it on the dyno with no cover on the airbox - no change.

[The Blimp]

Originally Posted by BM3Rrrr

I just don't feel like cutting a hole in my airbox and running some ghetto tubing down the side of the engine.

If I ever go to sell the car I would prefer to be able to put it back to stock.

Go on eBay and buy a second hand air box and cut it, then keep your stock one for when you want to revert.

I got one for $50 - it was pretty dirty but worked fine and looked ok once cleaned up

[TheMidnightNarwhal]

Originally Posted by The Blimp

Go on eBay and buy a second hand air box and cut it, then keep your stock one for when you want to revert.

I got one for $50 - it was pretty dirty but worked fine and looked ok once cleaned up

But for 50$ more you can get some fantastic whooshing sounds.

[The Blimp]

Originally Posted by TheMidnightNarwhal

But for 50$ more you can get some fantastic whooshing sounds.

When your average temps range from -14c in winter to a max of 24c in summer then maybe so, but in Australia yeah...nahh

[Aus335iguy]

Originally Posted by BM3Rrrr

I just don't feel like cutting a hole in my airbox and running some ghetto tubing down the side of the engine.

If I ever go to sell the car I would prefer to be able to put it back to stock.

If you're in Sydney I have a stock airbox I can sell you.

[Aus335iguy]

Originally Posted by vtl

People buy intakes for the noise and the marketing pseudoscience from the vendors.

tawfeeqh was runing 360-370rwkw on full E85 and trapping over 130mph on the stock airbox. Ran it on the dyno with no cover on the airbox - no change.

This

[The Blimp]

Originally Posted by WeekendWarriorz

Just looking at your sig...have you even owned an N54 powered car?

[WeekendWarriorz]

Originally Posted by The Blimp

Just looking at your sig...have you even owned an N54 powered car?

I've owned a 2009 e90 335i back in 2014, was running JB4 FBO 93 oct+meth. I've been involved in both platforms since, DCI make power when paired with a tune. I don't know what point is trying to be made by saying they're not, that's just false. But hey if you want to make your turbos work harder and don't want to benefit a lower WGDC and increase boost to make more power then don't run DCI's. Simple. Not sure if anyone in this thread has taken a single log comparison before.