maf lb/min

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Apr 2, 2005 | 01:42 AM

luv2spd

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From: Newton, KS

maf lb/min

How many lb/min are you guys getting at wot. The only recent log I have shows about 39.X at 6000 rpm. Is this in range for a cam only car? I know everybody's numbers will prob. be different b/c of scaling the maf or something but I just want a rough idea. If I remember right, my car only did high 20s stock.

Apr 2, 2005 | 09:51 AM

RedHardSupra

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From: Laurel, MD

yup, sounds about right, i get 37-40 in 6000-6200rpm range depending on weather

Apr 3, 2005 | 12:08 AM

luv2spd

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From: Newton, KS

ttt, anybody else?

Apr 3, 2005 | 12:22 AM

92SilverSHO

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i get around 30-31 at WOT around 3000rpm, not sure above that, thats when my log ends.

Apr 3, 2005 | 12:22 AM

92SilverSHO

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i would like to know whats a normal amount

Apr 3, 2005 | 10:23 AM

P Mack

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From: Phoenix

Your numbers sound about right. A rough rule of thumb is 10 rwhp per lb/min.

Apr 3, 2005 | 10:43 AM

92SilverSHO

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From: Bensalem, Pa, now montreal, Quebec

**** then im way off, i get that around 3krpm, and im not making huge HP. but my car is having a 10mpg problem

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Apr 3, 2005 | 07:19 PM

cablebandit

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67.75 @ 5300...turbos baby!!!!

Apr 3, 2005 | 07:40 PM

#10

luv2spd

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From: Newton, KS

So do you have around 670 rwhp?

Apr 3, 2005 | 08:05 PM

#11

Another_User

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40.76 @ 6026rpms. If I go to the dyno and show 407 rwhp I think I will crap my pants in joy.

May 27, 2005 | 10:11 AM

#12

gtodoug

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I'm seeing 44.68@6506 rpms. Are you supposed to see 10whp for every 1lbmin logged?

May 27, 2005 | 11:04 AM

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txhorns281

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From: Houston, TX

~45

May 27, 2005 | 12:12 PM

#14

Phil99vette

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From: Port Tobacco, MD

I'm seeing 46lbs/min @ 6500 and I have 700 more RPMs left/lean A/F.
Phil

Last edited by Phil99vette; May 27, 2005 at 12:19 PM.

May 27, 2005 | 12:24 PM

#15

RedHardSupra

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From: Laurel, MD

yup, i've seen upwards of 50lbs/min on big H/C with 90/90 setups at ~7000rpm

May 27, 2005 | 01:29 PM

#16

txhorns281

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From: Houston, TX

it may also depend on how fast you are willing to go, 45 lb/min for me is at like 145 mph...

May 27, 2005 | 01:29 PM

#17

Sport Side

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From: Tallahassee, FL

This is a reading of the amount of air passing the mass air flow, correct? So, how do you relate this to power? "If" the rest of the system does its part correctly, you "could" produce this much power?

May 27, 2005 | 02:01 PM

#18

WS6FirebirdTA00

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From: North Carolina

i get about 101.6 so that means i have about 1016 rwhp right? haha jk that would be cool though. ill let u know what i see once i get some log info again after the swap (h/c)

May 28, 2005 | 03:54 PM

#19

ZDEN

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From: Fulshear, TX

i see 34.7 lbs/m on my truck. i doubt its putting down 347 rwhp though. if its fwhp i could believe it.

May 28, 2005 | 03:57 PM

#20

RedHardSupra

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From: Laurel, MD

i see 40+, and i doubt i'm over 350. this is a horrible approximation i think, as you dont' take volumetric efficiency into consideration. i guess if we took a lot of data (from teh same dyno at that!) we could come up with some sort of correlation beweetn airflow and hp ratings.

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maf lb/min

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