Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Skeptical of "blade" exaust tip FE / emissions claims

diesel_john · 04-28-2008, 10:20 PM

Well the 1/4 NPT hole is in the other side. Here shown with a gage in the hole. Had a helper hold the flapper valve shut and could only get 1 psi pressure in the exhaust system before the engine became noticeably loaded. O2 sensor is in the crossover. So far seems to give good bottom end torque. Haven't got data on a try at lean burn. (Gas got too high to test)

H pipe

A restriction should decrease volumetric efficiency. right. i want to make my engine smaller not bigger.

04-28-2008, 10:20 PM	#21 (permalink)
diesel_john MP$ Join Date: Jan 2008 Location: SW Ohio Posts: 595 Thanks: 5 Thanked 19 Times in 14 Posts	Well the 1/4 NPT hole is in the other side. Here shown with a gage in the hole. Had a helper hold the flapper valve shut and could only get 1 psi pressure in the exhaust system before the engine became noticeably loaded. O2 sensor is in the crossover. So far seems to give good bottom end torque. Haven't got data on a try at lean burn. (Gas got too high to test) H pipe A restriction should decrease volumetric efficiency. right. i want to make my engine smaller not bigger. Last edited by diesel_john; 05-26-2008 at 02:41 PM..