I am currently fabbing my own front mount on my 99 rcsb. One question i have is how many o2 sensors will i need and where will they be located? currently i have the stock one in the stock location after the drivers side manifold and thats it. How do u monitor the right bank or dont you? any help is appreciated. thanks. and i will get pics up soon.

 

If you're doing a single turbo with a stock driver's manifold and a crossover that feeds into the back of the passenger log manifold, your best bet will be to have the driver's side O2 in the crossover pipe like you mentioned, then have the passenger O2 sensor somewhere after the turbo. You won't be able to segregate the exhaust from the two sides. The passenger O2 will read the mix, but it won't make too big of a difference.

 

I would put them as close to the stock location as possible just so everything will reach.

 

Put the 2nd one right after the log on the passengers side. Speartech can make you an extension for the o2 for 18 bucks.

 

got any pics of your setup. Wanna trade some ideas. I'll be having a 99 rcsb 4x4 in a few days and have been thinking about a custom front mount turbo.