Hey we are making a single kit, so obviously we see some merit. But, do not be fooled. Twins are superior in just about every way. Let me know when a single kit is doing this on the N54. Once it does, I will say ok a singles are equal to a good set of twins. Not only is this near the top of the WHP mountain for the platform, look at that curve. Its a thing of beauty in every way possible. Its better than most Supercharged V8's. Twins are unmatched in terms of response, and power potential, but they are not everyone's cup of tea. So we build it all now...
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The thing with high hp twin is that yes they are better for low end torque. But to push the power, it will be pushing quite a bit of boost as well as heat. At the end it will put more stress on everything. A bigger intercooler/more meth/etc will also be needed.
For an average joe(like me), the idea of having one less possibe turbo to fail, as well as less chance for a bigger turbo to fail due to slower shaft speed, and also less heat produced when running higher boost level and still have pretty good respond down low. The less chance of breaking rods, axles, drive shaft, clutch, etc
Before anyone say the twins can still be tune to have boost later and smoother, it is true, but at higher rpm a single bigger turbo will still be more effection(as in less heat produced)
Also one huge benefit is the selection of turbos i get when going single. The twins we get are really mostly hybirds. I m not saying twins are bad, my plan was get stageb2 twins later this year. But with more and better single turbo options coming out, a twin scroll single really interest me.
P.s that dyno power band look amazing, but that wont happen with a stock engine. And i bet most (90%?) of the ppl are just looking for reliable power while keeping stock internals.