2g running lean during idle

[miller97tsi]

ok got my 2g running after long rebuild. fired it up today idles great minus the exhaust leak coming from external wg. also it wont rev up high sounds like its got no balls after 3000 rpm. what could be causing this. i have checked for vacuum leaks and have come up with nothing. please any help

 

[DSM_JAY]

do you know that its running lean? are you running a wideband? the exhaust leak could throw off the O2 sensor. well with 750cc injectors i dont see how your running lean at idle unless you messed something up with your SAFC, on the other hand that 190 walbro wont cut it for those injectors depending on where you have boost set at, and what kind of rpm's you intend to run, do you have an adjustable fuel pressure regulator. it says you have comp cams do you happen to have some adjustable cam gears to tune them with. alot of variables here.