looks like good data!

 

To me the data appears to be within the noise. You have to understand there is too much variability for anyone to definitively claim an increase in power. Even if I look at the two curves for just the MAP manifold I see variations of 5-10hp. Is this to say the MAP port is worth 5hp over the same MAP port?

I would venture to say that if you took 10 dyno runs using the busher port and 10 dyno runs using the MAP port at random times you will find a percentage of butcher manifolds that read higher gains.

I think the MAP stuff looks great and I am clearly not a busher fan, but the data doesn't support these claims that the MAP porting is better.

Bucher - $95
MAP - $225

Picking the real winner is easy.

 

Very good Points.. AIT change and 5-8 hp Disappears.. Timing may or may not be the same.. there are too many variable IMO.. id like to see a test done at a different location than the manufacturer of the competing part myself.. My Buschur ported exhaust manifold still hold the record for HIGHEST HP STOCK FRAME also.. Proven at 8800RPM and 9.3's too..

Mike

 

Thanks for testing the two, I just would of done the stock one too.

 

thanks for posting this, was very seriously looking into Rev 3

 

for some reason people here are talking about exhaust manifolds...when the rev 2 is the intake manifold...am I wrong?

 

its both, lol

 

wow, very good info!!

 

lol...so which is being tested on the dyno...the intake or the exhaust manifolds...?

 

exhaust, lol i know its confusing

 

Great test and data ! I wish you had the same for the intake manifold .

I am looking at the MAP vs BR intake manifold and the one thing I like is MAP will allow you to send your core in AFTER you get their ported manifold....

 

good info!

 

I am going to send my exhaust manifold to get ported by Buschur or MAP, still undecided, but was wondering if its worth it, or if I will have issues by not also porting the hotside? Fwiw its on an evo8 turbo with the larger 10.5, ported megan 02 and a rmr 3" dp.

 

The "power difference" looks to be related to knock retard/igition advance to me.

That "power difference" isn't out of the relm of measurement error either.

 

I totally agree, with all the variables there to make or take that 5-10hp on 400+ I wouldn't be totally convinced. But the price does speak very loudly. I like MAP and their products but it would take more than this tiny possible gain to spend the extra $130. But then again if I was going to be paying for a modded manifold I would just splurge and buy a tube mani instead.
Still nice to see them putting the money and time into trying to make products better than the competition. MAP still gets an A++ in my book.