has anyone used this... and how well does it perform.. im looking to use it to tune my car.......

http://www.dynotunenitrous.com/store...?idproduct=150

 

The Lc-1 is the best wideband there is but requires a bit more work to install and get up and running than others. I just installed one in my 89 Si about 2 weeks ago, works great. You should buy it off Ebay with the Innovate DB gauge. I paid $189.00 shipped.