e500slr

Has anybody installed or seen a Kleeman SC for the M156 installed on a car? They claim it makes 680hp without any mods like LT headers. I know the Weistec is superior as it's twin screw but without long tube headers you can't get past 637hp. I know headers really open the engine up but they are simply too loud and raspy for the street if you live in a strict city with noise regulation. Kleeman actually posted a video with a W212 E63 and say it makes 713hp with original exhaust, that's 585whp without headers.

What do you guys think, BS or real?

Again headers are out of the question.

Toadster

nice cold air for that blower

RedBullJnky

I posted a thread about that blower a couple years ago. No one had seen it and they took the vid of YouTube, shortly after. Then I read on another forum (about5 or 6 months ago) that Kleeman dropped the Wiestec blower for these company called Xtra Power. Which is the same company as the vid on you tube.

e500slr

So what's the verdict on it?

AMGSC

The X-tra Power is a TVS roots blower.

e500slr

I know it's a roots blower, I'm asking how good is it or if it's good at all.

Again they claim this blower without any exhaust mods which means NO headers will get their power claims. I've asked Weistec and they say that anything above Stage 1 strictly needs headers.

HeissRod

I can't see how another company could magically get past the exhaust restriction that Weistec is describing.

johnnyblaze

I spoke with the owner of the E63 in this video. He PM'd me some information about the Kleeman supercharger on another board. His car has 570WHP. This is without headers. This is right on par with a Stage 1 from Weistec. Its a 2.3L blower.

e500slr

That's incredible considering highly modified E55s make that power. That's not on par with Stage 1 Weistec unless you mean with headers because 570whp is around 700 crank HP and Weistec quotes 637 crank hp for no headers on Stage 1.