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XfireZ51 · 07-18-2013

I want a WB on any dyno run I do simply to make sure it isn't getting lean at WOT. Whenever I have done tuning, I baseline the car and tell the operator to get out of the throttle if he sees AFR going above say 13.4-13.5. Surprised they don't have a WB that simply fits into the tailpipe. I would agree that the bung on the collector is more accurate. My ZT-2 is located there and I have compared readings from it to the one at the dyno shop. I know where my WB has been and you don't really know what motors or fuels have been used w the dyno shop WB. But better safe than sorry IMO. Stock motor and stock calibration, its likely WOT will be rich which isn't a problem. But these are 20+ year old cars.

07-18-2013	#6
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,686	Re: pre dyno pull question I want a WB on any dyno run I do simply to make sure it isn't getting lean at WOT. Whenever I have done tuning, I baseline the car and tell the operator to get out of the throttle if he sees AFR going above say 13.4-13.5. Surprised they don't have a WB that simply fits into the tailpipe. I would agree that the bung on the collector is more accurate. My ZT-2 is located there and I have compared readings from it to the one at the dyno shop. I know where my WB has been and you don't really know what motors or fuels have been used w the dyno shop WB. But better safe than sorry IMO. Stock motor and stock calibration, its likely WOT will be rich which isn't a problem. But these are 20+ year old cars.