The diffenents is being able to drive it on the road or not. Like I said how well it works does not matter to the inspectors. Of course O2 sensor placement is critical in any fuel injection system. I can remember GM changing Y pipe designs and O2 sensor placement trying to get car running better.

Also I trying not to discourage the lad. Once he sees what a PITA it is to add the EGR tube on his own set he will never offer to do it for someone else

 

im amazed good ol RDOT hasnt bumped in...kinda miss his 2 cents

 

Be glad he hasn't. He'd call you a moron

I try not to discourage people too much but I don't want him wasting so much time and money on absolutely nothing.