I think it would be possible to clog the cat(s), a lot of guys on the b-body forum have done it with no ill effects. I seafoamed last year and was really glad I did, it cleaned/smoked and it ran better afterwards. I don't have cats on that car though, so the clogging wasn't an issue. Good luck, buy some new plugs afterward though.

-SS

 

I did the sea foam before my turbo install.
Is it ok to use it with the turbo?
Should you just put it in the gas instead?

 

wouldn't run it through the turbo for sure and definately don't put it in the gas tank. get a small funnel and pour it in through the PVC fitting on the TB, slowly with the motor running. when you are near the end of the can, dump it in real quick (if you can) and make the motor die. let it sit for awhile and fire it up. you may want to think about doing this away from anyone you consider a friend though.

 

There is a video of some guys seafoaming a 3000gt. I'll try to find it.


edit: here you go... http://video.ls1tech.com/Player.aspx...0&term=seafoam

 

why wouldnt you put it in the gas tank? I am running one in mine now it is stock non-radix...
Dave

 

Works good with a complete tune up