OFFICIAL MAF flow rate lb/min flow rate thread!

[Bluemustang]

50.52 maf lb/min at 7800 rpm
Fuel trims 0%
30ish degrees outside

2018 ported intake
JLT
Gibson catback/X pipe

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[Chris Barnes]

84.35 lb. min at 7640 RPM. 0 STFT. 8.1 lbs of boost. The cool weather here in Phoenix seems to finally be making a difference. Was only seeing 78 lb. min. in the middle of summer. Not sure if this is good or not, but the car feels strong.

 

[Volstang]

Saw a best of 47.5 with 18 IM, 47lb, PMAS, Rob Shoemaker tune at 7200 RPM. Intake Manifold is out being ported and about to add LTs so we will see what that produces.

 

[armykyle1 [HACKED ACCOUNT]

So I didn't log LTFT, on my car.


But on my 93 tune with a pmas, I'm getting 51.5 to 51.8 with -3 to -4 STFT.

On the 100 octane tune, it was 53.5 to 53.9 and -5 to -6 STFT. 31.5° spark and -2 to -3 KNOCKR

I'll do a log with LTFT so the proper corrections can be made I guess

 

[Red65]

Has anyone done a direct comparison of dyne vs street MAF numbers using the stock airbox? Im curious about how well the ram air effect works.

 

[whowasthat]

2015 GT Completely Stock:
LTFT 0.9375
STFT 1.03125
41.6436 @ 6633RPM

Taken on a summer Day

 

[gimmie11s]

84.35 lb. min at 7640 RPM. 0 STFT. 8.1 lbs of boost. The cool weather here in Phoenix seems to finally be making a difference. Was only seeing 78 lb. min. in the middle of summer. Not sure if this is good or not, but the car feels strong.

Have you had it on the dyno? Curious how the lb/min rate compares to rwhp.

 

[Volstang]

Update: After installing ported 18 IM jumped up to 48.41 with stock headers. Need to log again since I just installed LTs.

 

[Chris Barnes]

Have you had it on the dyno? Curious how the lb/min rate compares to rwhp.

I have not had on the dyno. I've since added a methanol system and now I'm pegging the MAF at 86.6 above 7,300ish. Haven't touched the tune, but now no knock like before. I update if I ever get this thing on the dyno.

 

[gimmie11s]

I have not had on the dyno. I've since added a methanol system and now I'm pegging the MAF at 86.6 above 7,300ish. Haven't touched the tune, but now no knock like before. I update if I ever get this thing on the dyno.

Nice.

I’m pegging the MAF on 11 psi with twins.

I plan to have some dyno time in the next 2 weeks.

 

[Jay-rod427]

86.68 at 7,500 with zero fuel correction. Doesn't peg out until right at 7,450.

https://datazap.me/u/jay-rod427/488-r3?log=0&data=1-9-18&zoom=5730-5905

 

[Andy13186]

48.81 with just a k&n drop in filter pbd e85 tune in 80+ degree weather. Not sure what RPM it was at but my max RPM was 7573. Got the data via torque app in grams per second then converted to lbs per minute.

 

[ManBearPig]

Reviving an old thread here

My last log showed a peak MAF flow of 47.3 lb/min (46.6 after applying fuel trim corrections).

2016 GT. TSP longtubes, JLT cold air, Lund 93 tune.

 

[Bluemustang]

Reviving an old thread here

My last log showed a peak MAF flow of 47.3 lb/min (46.6 after applying fuel trim corrections).

2016 GT. TSP longtubes, JLT cold air, Lund 93 tune.

At what RPM? You want to read where hp peaks. For you probably 6500-6800. Otherwise, MAF lb/min can keep going up but isn't helping you get more hp.

 

[ManBearPig]

At what RPM? You want to read where hp peaks. For you probably 6500-6800. Otherwise, MAF lb/min can keep going up but isn't helping you get more hp.

The peak 47.3 MAF value (uncorrected) in this log is at 6574 RPM. I would assume HP peaks around 6600? The MAF goes down to 46.9 at 7k RPM where I shifted.

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