Concerning air filter restriction try the following test. Find a location where you can run a 0-60 or quarter mile acceleration test run. Perform the test with the stock set up with a new air filter in place. Repeat the test with the filter removed. The results should prove to you that modifying or replacing the air filter will not result in any substantial reduction in acceleration times. DMC Joe DeLorean Help dmchelp@xxxx www.dmc.tv http://shopping.oraclesmallbusiness.com/dsvstore