Flattops and O2 sensors
I'm working on that setup as we speak. Need to identify and procure two sensors and weld-on threaded ports. To be installed with stock exhaust manifold and downpipe, locate on in each port of the two-into-one section of the downpipe.
There are 1-, 3-, and 4-wire options. Pegasus racing has the 4-wire unit. Many turbo-heads use the 1-wire. Shane (Turbo) had some great posts on that a while back. Pegasus has a single unit 2.25" gauge. Too, bad they don't have a dual unit, single gauge. Think I'll follow Shane's advice and just use a multimeter for spotcheck reads. Many of the air/fuel displays running off the O2 sensor are hokey and cheap-looking.
I wish I could get engineering data on Bosch O2 sensors. Wife's fi Jetta has these. Supposed to change every 80k miles or so.
I'm looking for more data and sources on this, too. Any tips or tricks from you guys will be most appreciated!
Later,
Al