100_4749.JPG;new air/fuel ratio gauge from ProSport, same company that makes my boost gauge|||100_4750.JPG;I need to pickup the signal from my factory O2 sensor which is attached to exhaust downpipe (hot!)|||100_4751.JPG;ECU gets output from O2 sensor and it sits in false firewall so its easy to run wire behind dash|||100_4752.JPG;O2 output goes to this pin on ECU wire harness|||100_4756.JPG;pin #52, black wire is O2 ouput|||100_4758.JPG;I spliced into O2 output before it gets to ECU|||100_4759.JPG;|||100_4760.JPG;|||100_4761.JPG;ECU put back in place and purple O2 output that now goes into cab for new A/F gauge|||100_4762.JPG;while I was in there I inspected cabin air filter also|||100_4763.JPG;I think its original, I cleaned it after this photo but it really needs to be replaced|||air fuel ratio lead.jpg;|||AlbumDescription;Now that the ECU has been upgraded by Jak Stoll, it appears that the fuel pump may need to be replaced.  The car stutters at full throttle. This may be due to the fact that the car jumped from 14 psi to ~24 psi of boost. Before I go replacing the fuel pump I want to make sure that is the problem so I got a fuel air ratio gauge. Prosports does not yet make a gauge that matches my boost gauge. This one is hideous once turned on but hopefully I wont need it turned on all the time.|||