Need more motor help

[scottysspeedshop]

Ok I changed the computer and it seemed to help but it is still rich.Will not having the o2s hooked up do this?It is also reving slow like a dead cylinder.Thanks

[BryanL]

If the o2's aren't hooked up it will likely be dumping fuel and running very rich. Get the o2's hooked up before you wash the cylinders.
Check that its firing on all cylinders. Good tip in GRM about a spray water bottle on the header pipe to see which one isn't firing.
I recently had a 454 missing on 1 cylinder and I would have swore it was at least 2 or 3. It was also running pig rich and gave that sweet cat converter smell.

[scottysspeedshop]

That is what it is doing I will try the water bottle tip also.Thanks for the help.