When to expect Single Turbo?

[AYF80]

Are there any vendors or companies working on a single turbo manifold for the F80?

I'll be the first to say that only a top mount twin scroll setup would interest me

[Bowser330]

Originally Posted by AYF80

Are there any vendors or companies working on a single turbo manifold for the F80?

I'll be the first to say that only a top mount twin scroll setup would interest me

I'm not sure any hardware vendors would start that fabrication effort without having the software tuning in place to test it....

[JeffM-Houston]

Don't know, but I would be interested in why you would want to do that?

[///M ARMY]

Originally Posted by Bowser330

I'm not sure any hardware vendors would start that fabrication effort without having the software tuning in place to test it....

Exactly

[CaptainInsano]

Originally Posted by Bowser330

I'm not sure any hardware vendors would start that fabrication effort without having the software tuning in place to test it....

Correct sir. Once the software exists the hardware isn't far off.

[AYF80]

Originally Posted by JeffM-Houston

Don't know, but I would be interested in why you would want to do that?

Because I would like 800 WHP... have you ever been in a HPF E46M? lol, why would i not want to do it?

Either way, new large twins or a Twin Scroll Single would be good.

[Mandi90TT]

Originally Posted by AYF80

Are there any vendors or companies working on a single turbo manifold for the F80?

Hmm, let's see:

Option 1: stick with stock dual turbos for very little lag, quickly spooling turbos with lots of useable hp and torque.

Option 2: go with an overly large single turbo that takes a long time to spool, has lots of lag, and very little low end torque, but comes on with a huge amount of torque and HP around 4.5k rpms, resulting in massive wheel spin, but hey, you get to brag on the internet about how much HP at 7k rpms you have.

I know which way I am going.

[SakhirM4]

Originally Posted by Dave 90TT

Hmm, let's see:

Option 1: stick with stock dual turbos for very little lag, quickly spooling turbos with lots of useable hp and torque.

Option 2: go with an overlay large single turbo that takes a long time to spool, has lots of lag, and very little low end torque, but comes on with a huge amount of torque and HP around 4.5k rpms, resulting in massive wheel spin, but hey, you get to brag on the internet about how much HP at 7k rpms you have.

I know which way I am going.

[Bowser330]

Originally Posted by Dave 90TT

Hmm, let's see:

Option 1: stick with stock dual turbos for very little lag, quickly spooling turbos with lots of useable hp and torque.

Option 2: go with an overly large single turbo that takes a long time to spool, has lots of lag, and very little low end torque, but comes on with a huge amount of torque and HP around 4.5k rpms, resulting in massive wheel spin, but hey, you get to brag on the internet about how much HP at 7k rpms you have.

I know which way I am going.

2?

[AYF80]

It's apparent that you lack significant experience in driving an actual single turbo or twin scroll turbo BMW. So maybe you shouldn't make comments just to be "funny" it doesn't help anyone.

[Mandi90TT]

Originally Posted by AYF80

It's apparent that you lack significant experience in driving an actual single turbo or twin scroll turbo BMW. So maybe you shouldn't make comments just to be "funny" it doesn't help anyone.

It's apparent you don't know what you are talking about, since I have driven a high HP Supra turbo multiple times, as well as a high HP 240SX single turbo, and have not been impressed.

I'd have to say my comments do help some folks, just not the way you think they should help.

[AYF80]

Originally Posted by Dave 90TT

It's apparent you don't know what you are talking about, since I have driven a high HP Supra turbo multiple times, as well as a high HP 240SX single turbo, and have not been impressed.

I'd have to say my comments do help some folks, just not the way you think they should help.

Dude... a Supra? the worst example of a single turbo of all time? lol That car is terrible when it comes to anything other than Peek Power no to mention very outdated. Its no wonder you were not impressed and a 240 is a pile of shit, lol jk. Thats also why i said BMW in my last post man.

Plus, none of those cars were a Twin Scroll.... so, totally irrelevant.

[Mandi90TT]

Sure, whatever you say. I'll enjoy my twin turbos on my M while you post meaningless high hp numbers on your singlee turbo

[JamesM3M5]

The N54 single turbos behave nothing like the Japanese single turbo garbage to which you refer. The S55 with a single turbo will be significantly more capable than the N54, PROVIDED the software can be put into place. Current encryption protocols are intentionally robust to prevent any form of tuning. I heard companies are going for copyrights on programming, so that any changes made to existing code would be a copyright violation. To get around it, you would need to 100% build your own code.

The N54 can be run single turbo with nothing more than a piggyback, but it works ideally with other changes that are best done in the ECU flash. Running the S55 on a single will more than likely require a similar setup.

But don't be so quick to poo-poo the single turbo BMW inline 6. Criticism of the N54 single projects was identical, until dyno and real-world testing showed what a difference the extra air flow of the single really does. Check some of the e90post threads - this one was EARLY in the implementation stage, merely 16 to 22.5psi, third boost testing run. http://www.e90post.com/forums/showpo...71&postcount=1

[JamesM3M5]

Here is 700+ RWHP twin scroll single turbo, 500+ lb-ft of torque available from 4200 up to 7200 RPM.

http://www.e90post.com/forums/showpo...32&postcount=1

Not exactly the 800-1200HP dyno queen Supra numbers, but so much area under the curve that acceleration is just plain silly.

[JNoSol]

One big twin scroll turbo would allow more boost/airflow. It's great for top end HP. You would only want this if you're building a car for high speed record, drag racing, and Dino bragging rights due to lag and burst of power at the top end. If you want to go fast around the corners, the factory turbos are good enough. Maybe someone will come out with 2 larger turbos instead, then it's the best of both worlds.

Our cars are only a few months old, I'm sure there is a HP race behind the scene for turbo manufacturers and reputable tuning shops. This is a solid engine, I can see it cranking out 1000hp+ like the fully built E46 M3 (HPF) with larger turbos or dual chargers.

This should be easier since our tranny and diff are over built, came from the M5/6. If you have DC, they would need to figure out how to install grippier clutch to hold more than 600hp/600lb ft.

[Bowser330]

The e-turbos I suggested in my diy turbo upgrade might be perfect for aiding a single turbo application, imagine an electrically driven turbo in series with a large single, helping spool it up with preboosted air...

[shivaswrath]

Originally Posted by JeffM-Houston

Don't know, but I would be interested in why you would want to do that?

^^^^this!

[AYF80]

Originally Posted by shivaswrath

^^^^this!

Horse Power

[Reid]

Originally Posted by JNoSol

I believe that's what BMW DTM car uses.

The DTM cars use a 4.0L V8 (P66).

[Mandi90TT]

Originally Posted by JamesM3M5

Here is 700+ RWHP twin scroll single turbo, 500+ lb-ft of torque available from 4200 up to 7200 RPM.

http://www.e90post.com/forums/showpo...32&postcount=1

Not exactly the 800-1200HP dyno queen Supra numbers, but so much area under the curve that acceleration is just plain silly.

It's funny. Both those dyno sheets you posted show exactly waht I was talking about. Lots of lag, low torque until they hit their power area, which is not until 4k+ rpm. In fact, both of those dyno sheets had less torque than the stock S55 until about 3.8k rpm.

I'll stick with my stock turbos, which build boost nice and fast and have max torque from 2k rpms. You go ahead with your dyno sheet bragging numbers.

[AYF80]

I see your point, I really do. But I'm not talking about daily driving, if I was, then yes, the twins are awesome! But when talking about going with larger twins or a single turbo, it should be assumed that it's about winning on the track. People use these cars for other applications man.