AFR 5.0 cai

[gt350_driver]

Hello.
I have a question about my wife 2017 GT PP with corsa CAI and fresh k&n filter.
Idle about 13.9-14.3
WOT to redline 10.2-11
It is okay? Magnaflow catback + 2x x-pipe + sport cat on headers

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[Stephen@lethal]

Hello, is there a tune on this car? If not then its probably running a bit rich trying to make adjustments to account for the exhaust and intake. Its normal but optimal. To have an optimal setup, I would highly suggest a custom tune which I can help you out with if you are wanting to go that route. Lethalperformance.com

 

[Kong76]

Idle looks normal, your WOT looks a bit rich. I am around 12.5-12.7 WOT when I was on the stock tune with just an axle back.

 

[EFI]

WOT to redline 10.2-11

Sounds very rich, even stock is not that much. Should be in the 12s.

I am around 12.5-12.7 WOT when I was on the stock tune with just an axle back.

Sounds like you were leaning out there, the stock tune commands high 11s AFRs at WOT so 12.7 means you had some air leak or non-properly working o2 sensors.

What is it now assuming you're no longer on the stock tune?

 

[Kong76]

Sounds very rich, even stock is not that much. Should be in the 12s.



Sounds like you were leaning out there, the stock tune commands high 11s AFRs at WOT so 12.7 means you had some air leak or non-properly working o2 sensors.

What is it now assuming you're no longer on the stock tune?

If my dash gauge is of any accuracy the PP2 Ford tune at WOT is dangerous as all hell. 13.7. I triple checked everything for any leaks. Even using map gas while running.

I mentioned this in a few other threads as to why I am going back to stock. Just got my Dorman bundy connectors in with 3/8 barbed unions to splice oem vacuum lines back together.

 

[EFI]

If my dash gauge is of any accuracy the PP2 Ford tune at WOT is dangerous as all hell. 13.7.

I mentioned this in a few other threads as to why I am going back to stock. Just got my Dorman bundy connectors in with 3/8 barbed unions to splice oem vacuum lines back together.

Something is highly wrong there. I have the PP2 tune also (which has the same AFR as stock) and the commanded is between 11.5 and 11.7 by the top of the RPM range.

Check for vacuum leaks, it's not the tune.

 

[Kong76]

I looked everywhere for a leak. Unless I have a cracked intake manifold idk. I edited my other post but I used map gas around all connections while running. I would love to figure it out before the engine goes.

 

[EFI]

I looked everywhere for a leak. Unless I have a cracked intake manifold idk. I edited my other post but I used map gas around all connections while running. I would love to figure it out before the engine goes.

Possibly, but seeing as how even on the stock tune you were a full point lean (12.7) then that shows it's not the tune but it's somewhere else in the system.

 

[Kong76]

Possibly, but seeing as how even on the stock tune you were a full point lean (12.7) then that shows it's not the tune but it's somewhere else in the system.

Roger that, I will order both the left and right upstream o2 sensors from Rockauto and try that.

If nothing I will take it in and get a smoke test done. Thanks for the help.

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