Optimum WOT AFR

[MACHCT]

I finally got my plx wide band in the car and at wot I am seeing around 12.5 is this too lean for a 2.8 pulley eaton car? About 13-14 psi and the car pulls hard I am just worried it might be too lean

 

[01yellercobra]

Yes, that's too lean. It should be between 11 and 12. I aim for 11.5 personally. Where was the bung welded in?

 

[MACHCT]

I had it welded on the driver side about a foot back from the manifold

 

[TRBO VNM]

It is before the cats if you have them right?

 

[Wicked46]

Yeah, thats to lean. Who does your tuning?

 

[MACHCT]

no cats on the car it is about 6 inches behind the first o2 sensor on the driver side. I havent had the car tuned, the previous owner did. SO I am going to fork over the cash and have Db performance in MN tune the car more than likely.

 

[1wild-horse]

Call APS and have Casey do it.

 

[MACHCT]

you think APS over DB? I had a buddy who had a 600hp 2v built by APS and it didn't even last 1000 miles and they wouldnt stand by it, so I am a little leary about going to them.

 

[1wild-horse]

You have a P.M. ^