I have a boosted ls v-Tec in my del sol it is built, my problem is while I'm driving down the road at cruising speed probably around 4000 rpms and I let off the gas it will puff smoke out doesn't seem to do it at lower rpms, and doesn't do it at idle either and If I rev it up sitting still it won't do it, now I do not have a catch can I'm thinking that might have something to do with it, could anyone help me with this thanks

 

is it a black cloud ? or blue ?

 

Could be spark plug wires or spark plugs not firing properly.. The same problem happened to me and I was told by my friend which he has years of experience with all types of honda builds that that could be the problem and I was told the same thing by two other mechanics..

 

Never thought bout the plugs or wires thanks and as for the cloud from being in the car to me it looks white I'm 100 percent sure it's not black

 

COULD POSSIBLY BE THE RINGS OR TURBO SEAL

 

I was hoping no one would mention the rings lol

 

Valve seals.

vacuum created on decel draws oil from the valve seals.