Need a little advise please

[ctflash1]

I took my 85 GN out for the first time tonite and it didn't run the greatest. It's been over a year since I had it out. Over the winter did some basic upgrades but I think I have an exhaust leak my o2 readiness were all over the place from 800 to 50 and I could not get boost above 10psi. Brand new o2 sensor from kirbans, 42.5 lb injectors, walbro fuel pump with hot wire kit, adj fpr, 87 ECM with TT chip and scanmaster. No knock at all but the temp went to 217 after a 20 min ride. It seemed like it wanted to take off but it would start sputtering at wot. Any advise would b great. Thanks Steve