Engineer Scott from Star trek fame once said "The more complicated the plumbing the easier it is to plug up the sink" as he had disabled the super duper "Trans Warp Drive" on a pursing ship by removing a couple of specialized modules... this just came to mind a bit ago, out messing around...
I love my EFI. It's returning great benefits in fuel economy and power, and the tuning ability is amazing. BUT... you're relying on computers and sensors, and the more complicated the plumbing...
I was just out doing some final mapping, letting the autotune adjust the table. Car is running great. Then after a high speed blast, I was idling in a parking lot reviewing data and making some adjustments, and suddenly it's saying it's way lean, and the controller is struggling to return it to a normal ratio. I had just made a change in how the computer can adjust for variations in ratio, and all of a sudden it's wonkie! Fortunately I soon noticed a change in the exhaust sound too, and I realized I had blown out the collector gasket and it had fallen out at that very moment, so there was a huge exhaust leak right next to the O2 sensor. Bad data for the computer! So it's off to the parts store for a more robust gasket... simple things that have bigger consequences now with "more complicated plumbing!"
