Porting Dyno results?

[IslandTSI]

Has anyone done before and after dyno results after porting their stock manifold? Or logged air flow afterwards? In short proof that it really helps.

 

[romeen]

Doug Derby (Doug's Dynopwer) is really big on using the dyno to check the results of modifications. Properly done porting can give you a 20-25hp increase and even more than that in torque not to mention the quicker turbo response.

BTW, this is not heresay or speculation. A few years ago Doug was doing a series of articles for Turbo magazine on a Galant VR4 buildup. Every mod was followed by a dyno pull and documented. I was there for several of them. So I'm not trying to blow smoke up anybodys a##.

Scroll to the bottom of this page for more interesting dyno results:

http://www.turbomagazine.com/tech/0209tur_dyno_cell_mitsubishi_galant/index.html

Or go to turbomagazine.com and search for "dyno cell". You'll get all the pages of the VR4 buildup. It was pretty extensive.