Running rich, AEM fuel rail and stock FPR

[justin_t_2]

I live in California so you guys know all the smog rules. Okay so my car has been running rich lately and my AFPR was apparently dead. The reason why I thought it was dead is because I would drive adjusting the FP and it would do nothing. So I went out and bought the stock FPR and swapped it out with the AFPR. I have a FP gauge on the rail and it was reading 40 psi with the vac hose connected and 45 psi with the vac hose disconnected. Anyone have any suggestions on what I can do about my car running rich?

 

[BLINKY619]

I live in California so you guys know all the smog rules. Okay so my car has been running rich lately and my AFPR was apparently dead. The reason why I thought it was dead is because I would drive adjusting the FP and it would do nothing. So I went out and bought the stock FPR and swapped it out with the AFPR. I have a FP gauge on the rail and it was reading 40 psi with the vac hose connected and 45 psi with the vac hose disconnected. Anyone have any suggestions on what I can do about my car running rich?

is your bov recirculated?

 

[Aproductions]

what injectors are you using and do you have an engine management system?

 

[thatblondechik]

What makes you think you're running rich? I don't see a Wideband on your mod list.

Blinky- His BOV being vented is only going to make a difference in between shifts. I won't affect his A/F ratio any other time.

 

[justin_t_2]

I have the stock bypass valve and running stock injectors. And the reason why I said it's running rich is because I can smell all the unburnt fuel coming out the exhaust and every time I let off the throttle and shift, there is a puff of smoke coming out the exhaust.

 

[thatblondechik]

Well if you are indeed running a vented BOV, hook it back up. That'll cause richness between shifts. If your fuel system is otherwise stock, I'd guess a bad o2 sensor.

 

[justin_t_2]

No my bypass valve isn't vented. It's recirculated. Yeah I'm thinking that it might be a bad O2 sensor

 

[1gDSM4g63]

Like Aproductions said, what injectors and engine management are you running and you certain need a wideband. And you certain need to check on the TECH: Upgrade Paths. A) don't need an AEM fuel rail because the stock is at least good for 500HP, B) if you running a stock turbo etc... and have a 3" exhaust setup its most likely going to cause boost spikes, C) Pacesetter manifold is most likely not going to do you any good, etc...