its a old mag but I just got a new scanner just wanted you to know the truth about intake manifolds
http://i297.photobucket.com/albums/m...112/Scan_3.jpg
http://i297.photobucket.com/albums/m...112/Scan_4.jpg
http://i297.photobucket.com/albums/m...112/Scan_5.jpg
http://i297.photobucket.com/albums/m...112/Scan_6.jpg
http://i297.photobucket.com/albums/m...112/Scan_7.jpg
http://i297.photobucket.com/albums/m...112/Scan_8.jpg
http://i297.photobucket.com/albums/m...112/Scan_9.jpg
http://i297.photobucket.com/albums/m...12/Scan_10.jpg
http://i297.photobucket.com/albums/m...12/Scan_11.jpg

 

Interesting. Seems $2000 could be better spent elsewhere. I'm curious if porting has any negative effect on hp at any point?

 

Removed??

-E

 

porting shouldnt negetivly effect horsepower anywhere if done correctly.... all your doing is making a smoother surface for the air to flow over. less air turbulence= faster airflow= more power

when do you need a new intake mani? does the stocker ever get "maxed out"... not sure what to call it. i guess the point where it cant support the air flow thats being thrown at it

 

I would've thought the exact same thing. I also would've thought that an intake manifold that yielded gains at higher rpms would've produced similar results at a low rpms. I assumed airflow is air flow, but i guess that's where that whole speed density thing comes into play.

 

The thing I noticed most was how each manufacturer made the provision for the injector. If you look at the Magnus, the injector is not integrated into the runner, but all the others are to various degrees. I would venture a guess that the port size at the head and if the injector was fully integrated into the runner or not, had a something to do with the results.

Kinda of similar to the 1g manifold vs. the 2g manifold.

/brox

 

This is yet another round of a topic that's been beat to death. If you didn't get enough from the first 100 pages of argument on this topic, then you'll want to make sure you read this thread again and again.

The Magnus that was included by Dave Buschur in this test was not the current model that Magnus was selling at the time. It was a very early version, made years earlier, and had been superceded by models with several changes. DB bought it off E-Bay to compare the older Magnus IM to everyone else's current versions, because he was angry at Magnus about some comments made in another unrelated thread.

If you're looking to provide useful information, instead of testing out your scanner, it might be helpful to mention some of the current performers in this arena. Since then, the Indy intake manifolds have come out, which have performed very well, but were not included in the testing because they didn't exist at the time DB did the testing.

Also, Magnus is now selling a cast intake manifold which had been in design for a couple years. You can actually buy it now, unlike some other vendors who have worked on theirs for quite a while, but without any actually getting to production.

 

Don't waste your money on that just yet , those ported mani are making alot of power and hold up alot better, It also depends what kind of power you going for in your goal.

 

And also if you look at the test that was conducted i think dave used a stock TB on the kansai manifold.

was not the 65 mm ported one.
so i am sure it would of done better, none the less great article.

 

yo man its not my test or my car. The test was done by a pro and the results are in black and white I'm showing what was done not "JUST TESTING MY SCANNER"