OK .... so I'm a newbie to tsl ... but ive been lurking in the shadows for quite some time I have a 94 saab 900s .... 2.0 turbo has an SQR stage 4 tuned ecu 3" turbo back 2 1/4" IC piping with new big FM intercooler td40 turbo problem is my wideband is reading 14.3-15 A/F until 10 -12 psi...