Originally Posted by charlesd

I tried my picco 2607 pipe with my jlr red dot and everytime i used the throttle, it killed the engine because it became so rich. I even noticed the gas cap blowing open there was so much pressure. I then tried a friends novarossi 2630 pipe and it worked like a charm. I even tried another pipe and the engine was ok.

I tried the picco 2607 after tuning the engine with the 2630 and the same thing happened. too much back pressure.

Is there some kind of special set up to run this pipe?