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I never said GDI would dominate anything in racing, I just said it was used in racing and early on it did well in Le Mans, and it's apparently getting closer and closer to F1 by the day.

What...

All good words. I'd rep you if I could but apparently I need to spread around a little more first.

I have the "Internal Combustion Engine Fundamentals" by John Heywood who could be the other...

You are correct. I was under the impression that the injection event was started really late but it's likely not. Homogenous is likely used as rumors persist that US NOx compliance and sulfur content...

There is some data in research publications out there re DI (GDI) and RPM concerns. I've attached one which speaks to it and it's publish date was 2009.30672

To sum it up, there's a formula put...

What teams go with in racing 99% of the time has to do with what the current rulebook allows because everyone wants to win. We could speculate all day why Audi stopped as you say but honestly I don't...

Ok, here's my take on why DI works and I wouldn't fear running out of injector for practical purposes on an N54 before I figure the block will split in half or the crank walks and grenades everything...

24hr Le mans http://www.bosch-motorsport.de/content/language2/html/4063.htm
Ferrari has mentioned it wants to do gdi in it's F1 car if they go turbo. Lots of rumor re F1 and gdi, i havent kept up...

It's just a question of resources etc. There's almost certainly an engine with similar springs. Some 4v heads have even used motorcycle parts.

We really need a camshaft expert to plug in the...

The DI doesnt work at high rpm arguement is false. GDI has been winning in serious racing for nearly 10yrs.

DI can inject a massive amount of fuel comared to a port injector. By design it is made...

If you're tracking your car, you should absolutely not have glycol based coolant in your car. Once it gets on the track it's very hard to wipe it up vs water and presents hazards to other drivers...

The biggest difference should be a properly flushed cooling system running only water + "water wetter" type coolant additives with surfactants and water pump lubricants. Getting rid of a glycol where...

Don't forget your Grey Poupon mustard...

http://www.youtube.com/watch?v=mqIZa3PTX6c&feature=player_embedded

I don't think we're in disagreement here re who knew what when. I suspect that SSP + SJL has a working DCT upgrade where at least SJL figured things out, can't say for sure how much was passed on to...

Clearly I don't but I'm reading from SJL/SSPs posts where they are describing what is needed. Given that and some deductive reasoning, if the timeline is correct as stated earlier:
1) You sent your...

Whatever you want to call it, I dont want to go around in circles with you re hardware vs whatever. What seems to be the case is that you need an integrated set of 4 things (tcu, valvebody, clutches...

Maybe I'm missing something, and I'm not taking sides here but...is it correct to say that SSP and SJL didn't have a working trans upgrade (i.e hard parts like clutches and valvebody + software TCU +...

It didn't do too bad on fastestlaps.com, esp vs the 335, but I wouldn't track either of these two cars anyways. My 11 335xi isn't exactly a GT3 either. I like BMW more as a brand and the financing is...

B8 S4/S5 w/DSG (and OEM LSD!)?
:hidingundercouch:

NP. If it's a project car and not a DD then it makes sense re RB's being a cap where you're going.

Good luck with it.

That and what's different in the DCT in the 335is vs the M3?

I'm hoping this will hold up well and, if so, very good news for the platform. Advantage is/DCT until the 6AT gets a real set of...

Drags, 60-130 or both?

Personally I'd think about a used set of RBs, really good clutch and maybe some weight reduction (battery, wheels, maybe even brakes). I think the axles will hold up since...

Valveguides leak some amount of oil over time. People tend not to consider that as well. I'm sure some of the crap we see in the intake ports is from oil vapor from PCV but I suspect a good amount is...

http://www.n54tech.com/forums/showpost.php?p=168771&postcount=136

A while ago I du up the Continental doc on the HPFP and injectors used in the N54. It shows 35gm/sec of static flow which is about...

Other than the N55 turbo being net smaller vs N54, most of the airflow parts (heads/valves/cams) appear similar or even better than the N54. The N55 exhaust manifold looks a bit cramped at the turn...

Hate to be the bad guy but did VargasTurboTech notice the post on 4/23/13 on n54tech where it was discovered that the N55 turbo is an "R" (spins backwards from normal)? RB said that could be a nail...