question for xfi guys

[dentmasters01]

I disconnected my secondary pump hobbs switch to pressurize it to drain the gas tank. I forgot to connect it back up when I was done and put some race gas back in it. My O2 corrections were at zero. None what so ever. I thought I had a bad wideband sensor. I remembered the hose and after I connected it all corrections were back to normal.....anyone else see this as well ? Why did it not try to make any correction while a vaccum hose was off ?

 

[Dusty Bradford]

The coolant temp may not have been high enough for XFI to go into closed loop until the car ran for a while.

 

[dentmasters01]

must have been some wierd timing for it to start working then....It wasn't working, I cut the car off, fixed the hose then cranked the car and "presto" it was working ?? I believe the fans had already cycled on once before I cut it off.

 

[Dusty Bradford]

must have been some wierd timing for it to start working then....It wasn't working, I cut the car off, fixed the hose then cranked the car and "presto" it was working ?? I believe the fans had already cycled on once before I cut it off.

Most likely just a coincidence kind of thing. I'd keep an eye on it but wouldn't be concerned.

 

[dentmasters01]

thanks, I will. Hey, another question. I've been working on spool up, and a local here said to take out a butt load of timing down low, it will burn the fuel late therefore burning it in the headers more and help with spoolup . I wouldn't have thought of that. Sound right ?

 

[tom j]

Add timing and lean it out. Hotter air flows faster spooling the turbo