My new HPS post MAF tubes installed

Jordo! · 02-14-2011, 09:07 AM

Quote:

Originally Posted by '10Anamoly

No offense intended but I'm seriously doubting that the HPS tubes give you 12 RWHP. I had the Cobb PMAF tubes (same thing) with K&N drop in filters and dyno'd 270whp before and 275whp after with 5 hp gain consistently from 4k up. Not sure why the HPS tubes would suddenly add 12 RWHP for just a bit smoother airflow. How were the outside temps/humidity/car temp/oil temp on the two seperate dyno days?

The first breather mod always seems to net the most power, relatively speaking, probably because it makes an initial contribution to achieving optimal VE, and as you progress, you get diminsishing returns.

I added them on as mod number four, and gains were in the 3-5 whp throughout the powerband ballpark, which is much more likely.

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