I have installed a wideband o2 sensor in the downpipe right after the turbo. I have a custom turbo setup with an external wastegate opening to the atmosphere.
My question is this: How much is it going to throw off the readings when that extra exhaust is dumped? Will it still read accurately sampling a smaller volume of the same A/F ratio gas? Or does it need to sample everything that comes out of the engine to calculate the raito?
The reason I am concerned is because while non WOT driving, the a/f ratio as displayed by the Zietronics ZT-2 is perfect, right around 14.7:1. Then when in WOT, my mixture richens to 10.5:1. I am trying to lean it out to around 11.8. but it seems that no amount of leaning with the MAFT and the E-Manage is doing any changes.
I just want to be sure that when I am changing settings on the MAFT, if the A/F ratio really is leaning out, but my wideband is just getting a bad reading, that I dont blow something up.
Thanks for any advise in advance.
Ryan
My question is this: How much is it going to throw off the readings when that extra exhaust is dumped? Will it still read accurately sampling a smaller volume of the same A/F ratio gas? Or does it need to sample everything that comes out of the engine to calculate the raito?
The reason I am concerned is because while non WOT driving, the a/f ratio as displayed by the Zietronics ZT-2 is perfect, right around 14.7:1. Then when in WOT, my mixture richens to 10.5:1. I am trying to lean it out to around 11.8. but it seems that no amount of leaning with the MAFT and the E-Manage is doing any changes.
I just want to be sure that when I am changing settings on the MAFT, if the A/F ratio really is leaning out, but my wideband is just getting a bad reading, that I dont blow something up.
Thanks for any advise in advance.
Ryan