I have all 3 of my cats gutted and was wondering if this much smoke is normal. My car was warmed up when I was reving it.

http://www.youtube.com/watch?v=w4c-q2DJn_M

 

Warmed up from driving around or warmed up by idling in the driveway? You realize that by making it backfire on purpose you are burning fuel in the exhaust system, which will make it smoke. The only time my catless car will make smoke like that is if I get on it hard before it's fully "warmed up."

Does it smoke like that when you cruise around town, or only when you rev the hell out of it? If it's only the latter, I wouldn't worry about it.

 

I just got back from driving. It was fully warmed up. It doesn't smoke like this if its under load until redline.

 

If it consistently does it, excessive oil in the combustion chamber could be a cause. Do you premix or have the stock OMP? Track how much oil you're putting in to get an idea if you're suddently burning through it.

If you premix, cut back a bit on your oil to gas ratio if you're on the high side of what's recommended.

 

stock OMP

 

How many miles on the engine?

 

Maybe some critters crawled up into the pre cats and are getting bar-b-qued?? lol