ITB's on a 24v project, Dyno results Post 136!!!

[The Dark Side of Will]

This may be a silly question but, how safe is it running this setup with just the trumpets and no air filtering?

The short answer is that it's not safe for the long term on a street driven car, but it makes good PR videos.

[ForcedFirebird]

We are having little filters made for those that want to run open trumpets, also a plenum in the works for people wanting to use the MAF and/or boost them.

[jrockbk]

This may be a silly question but, how safe is it running this setup with just the trumpets and no air filtering?

[ForcedFirebird]

Can m20 and m30 be made to do this?

Yes.

[LJ851]

So which ECUs are you able to alphaN with now that you figured this out? Can m20 and m30 be made to do this?

[ForcedFirebird]

Tunes are available for the open trumpets.

Air-boxes are in the plans, yes, but will be more expensive. We will be starting with sheet metal, and pending serious interest, carbon can be manufactured.

More on this later, though, the parts for the new setup just arrived. Trying to talk a couple locals into putting these on their 3 and 3.2l motors and re-dyno them just to prove further how they perform.

[kingston]

Is there a plan to offer a tune & airbox for the E30 24V swaps? So excited about this!

[ForcedFirebird]

Do you accept bit-coin

Sure! Right after they are converted to USD ;)

[jrockbk]

This exact setup won't fit an e30 with a brake booster (well, will physically clear). There should be at least one throttle diameter away from any obstruction, and that just won't happen in an e30, even with a small booster. Booster delete is fine.




So, while the longer throttle housings will clear the booster, it won't have the one diameter clearance rule

http://forum.e46fanatics.com/showthread.php?t=1030015

Thanks for such a clear answer, stacking my chips! Do you accept bit-coin lol! Just joking

[ForcedFirebird]

I'm confused as to why it can't fit on e30 vs e36 if it's bolted to same motor, what won't clear? You mentioned something about the oil filter housing but isn't that bolted to the motor as well? Or is it different b/c hood won't shut? When do e30 kits become avail?

This exact setup won't fit an e30 with a brake booster (well, will physically clear). There should be at least one throttle diameter away from any obstruction, and that just won't happen in an e30, even with a small booster. Booster delete is fine.

The oil filter housing issue was resolved with an updated casting with more angle to clear. This was only an issue on the metal oil filter housing cover, it cleared the plastic ones only. All this has all changed and been resolved (obviously, they are bolted to the motor and running now).

If you would like these in your e30 with a brake booster, we just send you slightly shorter throttle housings, everything else is the same.

So, in short, all the fitment issues have been sorted for both chassis, and for all single vanos engines. I believe they will fit dual vanos engines, specially seeing some m54 guys have started swapping to the obd1 manifolds - these throttles are pretty much the same size as an m50 manifold...



So, while the longer throttle housings will clear the booster, it won't have the one diameter clearance rule for open trumpets.

For those interested in putting them on an m52tu, or m54, see this thread...

http://forum.e46fanatics.com/showthread.php?t=1030015

[nyChris]

I'm confused as to why it can't fit on e30 vs e36 if it's bolted to same motor, what won't clear? You mentioned something about the oil filter housing but isn't that bolted to the motor as well? Or is it different b/c hood won't shut? When do e30 kits become avail?

Clearance of the strut tower, and/or brake booster I would assume. e30 engine bay is a bit smaller than the e36.

[jrockbk]

I'm confused as to why it can't fit on e30 vs e36 if it's bolted to same motor, what won't clear? You mentioned something about the oil filter housing but isn't that bolted to the motor as well? Or is it different b/c hood won't shut? When do e30 kits become avail?

[MR 325]

Thanks man. Been a long time coming. Trying to talk the company into making an m20 adapter as well. The casting quality is phenomenal. The whole kit with linkage weighs 11lb.

Yes, please!

[rzerob]

So how much are these and what is the HP gain (I cannot see graph)

http://wot-tech.com/shop/bmw/bmw-24v.../prod_405.html

[digger]

We are putting the Extrudabody ITB's on another customers' m20, and to be quite frank, the Rowland castings have a lot to be desired, in weight, quality and port shape.

extrudeabody kit has runners too short but you can get extension pieces, whether the whole thing fits is another matter