PROBLEMS WITH GT350 Manifold not getting enough air

[5.O_Amir]

so i recently installed a gt 350 manifold on my 2016 5.0. i tuned it and tuner said it runs fine but at top end it doesnt get in enough air to the manifold. my maf sensor reads around 23-37 lb/min at 6-7600k rpms. so its definitely not getting enough air in because it should be 40-50 pounds. i did a smoke test there was no leaks supposedly and changed my intake to a pmas cold air. this helped it because when i previously did a pull with the stock one the car rpms got boucny at 6k now its still slow but goes up rpms smoothly. i am gonna check the manifold and maybe change the maf sensor which i dont personally think is the problem but if anyone has experienced something similar please let me know. im just getting into the car game and need help. Thank you

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[WildHorse]

PMAS would be more than enough ... sounds like yer tuner is having probs scaling the MAF. @K4fxd would be the best guy to answer.

 

[K4fxd]

Like @WildHorse said there is probably something in the MAF tune that is not right.

Which PMAS intake do you have and did you get a tune revision for it?

 

[5.O_Amir]

@K4fxd yes i did get a revision tune and he has done and showed me that he did the same or similar set ups. i got a pmas for the gt350 manifold tune required. i checked the manifold everything looked clean and changed the maf sensor today. still same issue occures

 

[5.O_Amir]

Like @WildHorse said there is probably something in the MAF tune that is not right.

Which PMAS intake do you have and did you get a tune revision for it?

to add on ti my other message he actually recommends pmas to all his customers and ive had lots of people and influencers in the mustang community like their tuning
Phantom Race Labs btw

 

[WildHorse]

What rpm you shifting at ?

 

[5.O_Amir]

What rpm you shifting at ?

shift point is 7500

 

[WildHorse]

shift point is 7500

all right that rules out not enough air mass. Any codes ? Pending or otherwise ? Maybe the TB is opening all the way.

 

[5.O_Amir]

all right that rules out not enough air mass. Any codes ? Pending or otherwise ? Maybe the TB is opening all the way.

i have no engine codes or nothing that pops up the dash and when i removed the manifold yesterday it all looks clean and new.

 

[WildHorse]

can you post a log of it happening ?

 

[5.O_Amir]

can you post a log of it happening ?

currently only picture i have

 

[WildHorse]

can barely read that . Make some logs, and upload them

 

[K4fxd]

What are your fuel trims?

 

[K4fxd]

154us is around 13lbs of air on a stock tune.
What PMAS intake do you have?
What throttle body do you have?
What MAF sensor do you have?
What is your lambda?

 

[K4fxd]

I also see 23lbs/min and 36lbs/min on the screenshot.

Be nice to see the hpl file

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