GB: Dbilas ITBs / airbox / alpha N

[DrMcDave]

this would be so damn sweet in an m20 engine bay.

out my league pricewise at the moment. I always thought the dbilas airbox was included w/ the ITB's. For a second there i thought it might be do-able.

[Van Westervelt]

how does this ITB setup compare with BMPs?

[Mastrcruse]

So would this go to the headlight delete or beneath the car somewhere? Also it says something about 130+hp efficiency, does this mean that it will add that much? I am just trying to learn, I haven't heard much about one of these setups.

Thanks

[DrMcDave]

if it added 130 hp everyone would have one instead of a stroker.

e30 groupie bmp is rebadged dbilas from what i understand.

[Van Westervelt]

That was my thought when I saw theirs. They are chargin 3 g's for theirs now. BMP's has the ITB's plus air plenum. So its actually cheaper than dbilas' whole setup?! That can't be right?!

[DrMcDave]

i still haven't figured out the full dbilas price yet, since the airbox is seperate apparently. I want one of those CF airboxes they are sweet. There is a sound clip on the maxx auto site. sounds soo cool. anyway i am sure your answer will be posted eventually. I think the priority is the s14 guys as a few of them are buying stuff.

[Low Level E30]

This is the price for the Dbilas ITBs. The Dbilas airplenum is NOT
included in that. The airbox pricing is as stated, these are very
high quality CF airboxes. check here
to see how airboxes for other motors are similarly priced in the GB:

http://www.s14.net/forums/showthread.php?s=&threadid=19235&perpage=15&pagenumber=1

e.g. an s14 airbox with all the intallation gear is normally running
1550 euro in Germany. so they save over 300 euro. Thats possible
when there is enough volume.

John

Hey John,

Will you be posting pics / details of the M50 setups you have, as requested earlier?

Thanks,

[BMW2ner]

130hp cant be right can it?

[MrK]

If an ITB setup ON IT'S OWN can add 130+ hp to my m20, I'd sell my right arm to get one.

I don't think so. About 30 hp for a modified m20 switching from m20 AFM to ITBs and MAF/MAP sounds more realistic.

Hey, wait a minute! "I" have a modified m20 with an m20 AFM on it, and I'm gonna be dynoing in abourt 9 hours or so :) So that will be the baseline, and the second dyno will be after MAF, and the third after forged alu rockers and a dbilas setup (when I can afford it, which I hope is soon)

That should make for some pretty interesting info.

[Van Westervelt]

no, you dont get 130 hp from these. people would be getting these over a turbo, strokers, and swaps. There is an increase but not near that dramatic.

[bmw332i]

What I would pay good money for is an ITB set-up for a US spec s52 engine, along with a CF airbox for the ITB's that would fit in my e30 chassis. THAT would be well worth pissing the missus off when she found the CC bill.

[Steve30]

So would this go to the headlight delete or beneath the car somewhere? Also it says something about 130+hp efficiency, does this mean that it will add that much? I am just trying to learn, I haven't heard much about one of these setups.

Thanks

No. It will not add anywhere near that.

I believe the example was with S14 engines that are making roughly 130hp per liter of displacement.

Either way, these kits are for those who wish to go beyond hacked chips and exhausts and really tune their engines. They're fantastic.

[maxx-automotive]

SteveE30 hit the nail on the head. The "130 hp" has somehow been
taken out of context. I meant 130 hp PER liter displacement. This
is possible on some engines in normally aspirated form.

Think of it this way (very roughly):

stroker setup are good for increasing the low end and midrange torque.

Airbox setups are good for increasing the midrange and top end.

Alpha N increases torque across the rev range, particularly down low
where throttling an engine results in the highest losses.

ITBs improve throttle response and allow larger cams because
there is less volume between the intake valve and the throttle plate.


There is an ITB and airbox setup for the M50 motor in e36 chassis,
just need to find a M50 motor in e30 chassis to test fit. The US S52
motor is pretty similar so it should work the same way.

I did post pics to someone who emailed me...Ill try to get them up
on the site so you can see them.

The aluminum air plenum for the Dbilas is around 300 euro
(I have to check). So this is considerable cheaper than a carbon
fiber airbox intake. Unfortunately, CF is expensive because it is
hand made and each one does take some time to do properly.
You can see examples at http://john.gmstech.de. However, I believe
further up I listed some of the good properties CF has and why
it is preferred in this application.

John

[bmw332i]

Like I said, if you (Maxx) can get an ITB and CF airbox setup for an e30s52, and it ends up with noticeable improvements, I will be your first customer. I mean, another 60-90 crank hp would be, umm, good. Keep me updated if this does come to fruition.

[Steve30]

Like I said, if you (Maxx) can get an ITB and CF airbox setup for an e30s52, and it ends up with noticeable improvements, I will be your first customer. I mean, another 60-90 crank hp would be, umm, good. Keep me updated if this does come to fruition.

I don't believe you'll see those gains from this conversion. However, it will give you the ability to make the rest of your engine mods all the more effective. If you chose to really build an M20 in conjunction with this you might see that type of power creation.

But I'm not sure, I'll let Maxx answer. It just seems like a ton of power- almost unlikely?