How is that 3.5bar working out for you? Have you ever tuned with dual maf's? I'm about 200whp from the dual maf or map setup , but my next purchase is going to be an engine management system and injectors so I can tune my A/F and timing and turn up the boost to 16lbs, I just want to make sure and get the best system now so i don't have to buy something twice. I searched the site and found content pertaining to only just dual mafs and some only on map sensors, but nothing as far as a comparison for what is best for the Z. Thanks for all ya'lls input, and I'm down fo a GB I'll keep an eye out for that.