With the advancements in meth I don't see any problems. My tuner has tuned a bunch of meth turbo cars. He was very confident it getting it to work properly.
The alternative to meth would be e85 at this point.

IMO really the compound setup kicks the crap out of a turbo setup. It's just limited by the boost abilitys of 93 octane. You really fight to keep a balance between the supercharger and the turbo, you don't want to spin the supercharger too slow and have crap low end cuz that defeats the purpose and you don't want it to have too much boost cuz then it'll kill the high end. 8-9#s from the eaton is right where you want to be to still cut those low times and spool up the turbo as well as having low end drive ability that makes it so fun on the street.

If you do enough searches you'll see compound cars with amazing power curves making 900+ on race gas and/or meth.
The tech behind meth is good enough to rely on it for the street so why not use it?

 

But with just turbos at the same boost you'd be making 2000hp. (44lbs). Power below 3000 rpm sounds cool, but is pretty worthless. With a auto/stall or transbrake or just dumping the clutch your never below 3000. If the turbo is properly sized, you wont lagg either, just my .02 - im not trying to start a war, but I think youll find its true.

 

We'll see. Some of the fastest cars are running compound setups. Dunno where you got the 44 psi # from but that's a little bit more then I plan on running =)

 

I don't know much about F/I, but if you ran two different sized turbos, one smaller and one larger (obv), couldn't you spool the small one up quickly for low end boost, and the larger one will kick in in the mid to upper ranges? That way you wouldn't have to worry about the s/c holding back your potential. Ford did that to their turbo diesel trucks. It makes sense that two turbos would be more efficient, since they are not in 'series' like compound boost would be. Unique? Yes. Better? Yes. Best? I wouln't think so.

What cars are you talking about being on compound boost being one of the fastest? I have never heard of compound boost cars, really, before this thread ('cept' this VW motor they are comin out with), but one of the fastest production cars was the Koenigsegg CCR, with a Rotrex twin TURBOCHARGED Ford Modular 4.7l V8. Or the twin SUPERCHARGED Koenigsegg CCX.

 

lots of big torque diesel motors run compound sets ups pushing turbos into roots blowers.

 

OLD diesels used the roots to spool the turbo, this is because diesels have issues moving exhaust volume, the also had a way to bypass the blower when the turbo kicked in. Todays diesels use variable vane series turbos, and the better medium sized systems use parallel (twin) variable vane turbos. The old air plane engine argument is brought up alot to, but that is a whole different deal and they were not producing a whole lot of power... the reason they did was not power, but instead the figured a way to run the turbo with the supercharger and use the turbo and intercooler at low boost as a heat sink basically to remove heat from the engine and make it last longer and to make the entire thing more efficient. But again this was designed for altitude and I suspect that has a big role in the design that I am not educated enough to even consider.

the 44lbs was from hellions website with their claimed 1400 hp, which was a built motor and heads w/ race gas btw and they blew it up. I dont know where your getting the fastest cars are compound, that (to my knowledge) is not the least bit true. Compound works on a diesel trucks, by using one small turbo and one large turbo, the small spools the large and at x rpm goes into bypass mode to prevent restriction and the large turbo takes over. This is used because the engines are 600-800 CI or more and they also run diesel, where they can run insane amounts of boost. I believe you and quiet a few others are confused between boost and cfm, boost does not = cfm and no matter what you do, your engine will not make more power than the highest amount of cfm from any power adder you have will flow, not matter what order it is in the system and therefore is crap, because your not increasing cfm, only pressure, which is beneficial on diesel but not on gasoline..

 

LMFAO at this statement! Just look at the first dyno graph that I posted on the first page of this thread, and you'll see how awesome compound boost is, NOT. Also, are your psi numbers from before or after the supercharger? Also, there are 2 iat's on Terminators. I'm going to call bull**** on your 107 degree reading, if it's from your IAT2's. MAYBE your IAT1's, but definitely not your IAT2's. Especially with NO intercooler on your ****** rigged turbo set up.

 

Damn dude, who pissed in your cheerios this morning? If the guy is wrong or right, just giving his opinion, or is full of crap, who cares. Most people on here are educated enough to form their own opinion of what he's doing without having to bury him in insults.

 

Kids just mad cuz his crap is cookie cutter =( He's had that attitude since I first posted without even knowing anything about my setup.

 

My crappy cookie cutter is faster than your pile lol. And that's with only 1 power adder lol.