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I think the surprising part is that boost is raised throughout the rpm range. I would have expected the improved volumetric efficiency would only been noticeable up top. Basically the new design give better airflow everywhere.
Interesting though how rough and irregular they left the casting in the previous generation. Seems like there was a lot left on the table.
Curious why you guys are surprised the boost increased? The impeller design is improved so isn't that a direct byproduct?
Generally speaking, boost drops when a charger is ported. It's to do with the airspeed (most likely) slowing down (by a small amount) vs the increase in overall flow capacity/ability. For boost to have gone up along with increased flow (let's assume there's more flow), the revised design must have been very well thought out indeed. Either that or the original was far from optimal.
That blower upgrade is definitely next gen! You picked up power everywhere and boost! Absolutely no negatives from the new blower.i was thinking it would of lost power under 5k rpms
That blower upgrade is definitely next gen! You picked up power everywhere and boost! Absolutely no negatives from the new blower.i was thinking it would of lost power under 5k rpms
You got me wanting to supercharge mine now lol
I am honestly stumped i wish it didnt lean out i would love to see the true figure
Yeah, I am 95% certain that it's a VVT thing which on my car wasn't 100% optimised because I was focused on peak power above 5000rpm. I actually think I managed to iron mine out and improve a little on the peak output, but haven't been able to dyno yet.
I'm not sure why Brad''s car has it though. He kindly sent me a log, but I'm not sure if the answer will be in there as it doesn't contain VVT numbers.
It could...just be a timing dip. My car seems hell bent on pulling 2 degrees from 5900 to 6300 rpm and then back up again after. It's not knock. I've managed to work around it, but it's not ideal.
....on that note....has anybody with a supercharger had a VVT tune done yet? It's not like they need more power, but damn I wonder what potential lies therein.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
