Which Wideband?

[Redlined]

Got my Perfect Power 6 installed friday. Time to do some upgrades! Autotec MAF, 550 injectors, and 3" Downpipe all waiting to go in and make the most out of my TD05.

I was told that I should install a Wideband before doing any real tuning. So three questions jump up...

1) Who makes a good quality Wideband? Doesn't need a lot of frills... just does its job.

2) Does the Wideband o2 sensor REPLACE my existing o2 sensor or do I need to run TWO sensors

2b) I understand that the Wideband o2 sensor should be BEFORE the Cat... My Stock DP has it before the Cat and the new downpipe has it after.... IF I only need one o2 sensor should I tune the car on the old DP then switch in the new one or do I need to have someone weld a bung onto the new DP and cork the other hole?

[BSOD2600]

1) LC-1 is one of the more accurate ones out there. I have it and mostly happy.

2a) Up to you really, since most widebands have a narrowband output which you can feed back to the ECU. The LC-1 narrowband output is adjustable too. I left the stock sensor after the turbo and the lc-1 in the 2nd bung on my dp.

2b) Thats what I've read too -- wb needs to be before the cat.

[cj91legss]

ive been looking at the AEM 6-in-1 Wideband guages on ebay for around 200...