i just a did a nice write up in the power mod thread...
Yes improved fuel economy, (atleast 2mpg gain)
no issues, absolutely love it, best mod ever
oh i did back up my 14.88 pass in texas with a 14.90@90
mph pass back in vegas...
Important to note that the original 15 sec timeslip was done in vegas... this was also almost 20k miles later...... so yea its still running strong... i have 23k+mile on the tune..