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dongoesby · 02-10-2010, 09:39 PM

As a future reference for other members. I went further into research and found my EGT reading (1100~1200 deg F) is exceptionally good for stock motor w/ stock ecu.

"We conducted the experiment on Ryan Larsen's '92 Talon AWD. Our baseline run had the EGT probe located in the collector and whenever the car was under load, the EGTs would easily climb past 1600oF (at which point we let off not wanting to damage the engine). After that, a new exhaust manifold was acquired and the EGT probe plumbed into the runner this time. Additionally, Ryan upgraded to a SteveTek High Flow Fuel Delivery System which has been consistently shown to drop EGT's about 50oF. Other than that, everything was kept constant (AFC programming, fuel octane, pump, injectors, etc.)
With the probe now mounted in the runner, we went out for a few runs and found that we could not induce the EGTs above 1410oF!!! Or in other words it ran at least 150oF cooler than when the probe was mounted in the collector (accounting for 50o decrease due to the new fuel deliver system). It is probably a bit more as we could've driven the collector mounted probe temp easily above 1600oF."

data gathered from Stevetek

cheers.

02-10-2010, 09:39 PM	#17
dongoesby Zilvia Addict Join Date: Mar 2007 Location: San Francisco Age: 38 Posts: 756 Trader Rating: (17)	As a future reference for other members. I went further into research and found my EGT reading (1100~1200 deg F) is exceptionally good for stock motor w/ stock ecu. "We conducted the experiment on Ryan Larsen's '92 Talon AWD. Our baseline run had the EGT probe located in the collector and whenever the car was under load, the EGTs would easily climb past 1600oF (at which point we let off not wanting to damage the engine). After that, a new exhaust manifold was acquired and the EGT probe plumbed into the runner this time. Additionally, Ryan upgraded to a SteveTek High Flow Fuel Delivery System which has been consistently shown to drop EGT's about 50oF. Other than that, everything was kept constant (AFC programming, fuel octane, pump, injectors, etc.) With the probe now mounted in the runner, we went out for a few runs and found that we could not induce the EGTs above 1410oF!!! Or in other words it ran at least 150oF cooler than when the probe was mounted in the collector (accounting for 50o decrease due to the new fuel deliver system). It is probably a bit more as we could've driven the collector mounted probe temp easily above 1600oF." data gathered from Stevetek cheers.