TTI vs Dougs

krazykuda said
Anything that decreases the diameter inside the pipe will not flow as much as the larger pipe...

If you are going to run a thermal barrier, put it on the OUTSIDE of the pipe so it doesn't restrict flow....

I gotta go with Rumblefish on this one...

Do any of you ever see a hi dollar professional race car that " isn`t " coated, I haven`t seen one in years ! I don't think they`re worried about flaking and getting back into the engine thru reversion !!