Well i posted up earlier this year that i picked up this 97 ws6 from a friend of mine. Sold my previous lt1 years ago and when this car came up for sale couldnt resist at the price. Anyhow previous owner claimed it wasnt running like it used to and lacking power. Took it out for a couple runs and ran like it was running on 4 cylinders. Had a couple trouble codes i worked through but still had code 16 popping up now and then. Opti was a cheapy so i replaced it with a new delco reman. Still no change... starts runs but lack of power. Car has some bullet cats installed and im confident that they are plugged and holding back power. Pulled out the o2 sensors and took it for a run to see that made a change. Night and day difference and she has full steam again. Bought a set of new delco o2s and will install them this weekend and see if that changes anything. If it runs like crap again i know the cats are plugged and problems solved.

Heres a running video with o2 sensors removed

 

Sounds good! Hopefully, you can get it running 100%. Should be a fun ride.

 

Toss a data logger on it to see what the O2's are doing while driving and what the fuel trims are. Should be able to narrow it down after that.

 

Very nice car!

 

Hell, a 13 dollar OBD2 bluetooth dongle and the Torque app on a phone will work. Don't need anything fancy.

 

Just picked up a set of moates cables.

 

curious, how much you reckon youre layin down with that setup?

 

I've seen two guys dyno 401 and 405rwhp with a 350/355 and the same h/c combo with an m6. Not worried about dyno numbers it's just going to be a weekend cruiser.

 

Sounds great and the car looks clean! Did you get the AC Delco 02's locally?

 

A friend of mine works at the dealership and got them for a decent price. I still think rockauto is cheaper but I was waiting a week or two to get them up here. Dealership was next day.