The first thing we notice is that all of the aftermarket manifolds spool up quicker than the stock manifold. However the stock manifold appears to out perform all of the aftermarket manifolds in the mid range. All of the aftermarket manifolds out perform the stock manifold in the upper ranges. In looking at the chart, it is easy to see that where the stock manifold flattens out (at around 6600 rpm's), the aftermarket manifolds are still climbing. Had the test been run to a higher rpm limit, the differences would have been even more pronounced. At the very top end of the chart, all but two of the manifolds have begun to flatten out. The BJ and Magnus manifolds are still increasing.

I mean, after all, Marco runs one of his intake, and who can complain about 1000whp and 8's?

However, it is funny that the two fastest DSMs do not run Magnus intakes, especially the one who is "sponsored" by Magnus.

So Ryan im guessing your the one who brought my name up on Buschur's forum....

I think just because Ryan wanted to mention that he worked there. Other than that there was no point.

Thing is when someone like Brent has a motor built for him I would only assume he just has someone do the machining and uses all his own clearances and the same parts as he has been using all along.

[quote=Ron Korolak] But I can assure you its done right!

So I'm assuming a refund well be given if the EVO manifolds don't perform as advertised?

I don't know why people get upset about this stuff.

People buy many products with performance gains claims yet companies that make the claims seldom provide any data.
Everybody puts parts on their car without spending the money to do dyno pulls to see if it actually works.
On the internet there are many people that just repeat what they read somewhere else and that information gets progpogated everywhere and there is never any data, be it dyno, strip, or race track. Alot of I know a guy, etc.
I highly doubt the majority of products in the aftermarket are properly developed. I think it's more along the lines of get it designed so that it fits/functions and on the market.
A good example is adjustable dampers. Many don't work properly but people still buy them.
If you buy something without being provided data, it's your choice. Buyer beware. Claims of "xxxhp increase" without comparison dyno plots of a specific application is not data.
I wouldn't even read too much into what Bushcur's results will be. If I bought a $600 manifold, I'd spend the $90 to go on the dyno to see if it worked ON MY CAR AND TUNE. If it didn't, I'd be calling the company that sold it too me because before I shelled out $600 I would've given them specific details of my setup and told them "if it doesn't work, I'll be brining it back".
Then again, maybe I'm a fool that I already did a dyno pull to get a baseline for my car before adding "go fast" bits.

I love the internet on slow Sundays!

I had Magnus intake for 2 years now and it cracked in 3 places. I keep going through J/B weld like crazy. The intake looks very good but power gains I'm not sure about. And don't say that I can't tune the car. When I first got it I had to get the flange plained because it was not true. For 700 bucks it should give me more power and last little longer.

How about we let Dave and Marco figure this out. Or, just let it play out on the 6 or so UBBs it's already on?

I bet you could make an intake out of coffee cans, throw on a big turbo and you are going to get big power.

Okay, Michael. Why DO you taper a plenum? At least in a turbocharged car where the intake is going to be seeing a positive pressure?

This is where you hit a grey area. You get really smart guys on both sides of the argument. Neither side is really wrong, and neither is completely right.