This is topic What MAF to use with 42lbs injectors! in forum Tech Talk at Northern California Ford Owners  .


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Posted by BLoWN FR500 (Member # 8766) on :
 
I want to know what's the best mass air to use for 42lb injectors on a 5.0. Heads, cam, intake,supercharged! Also how many millimeters should I get as well
 
Posted by Blind (Member # 3052) on :
 
blow through or draw through?

I went with a PMAS blow through 80mm on my combo, h/c/i/procharger.
 
Posted by stangin' (Member # 514) on :
 
i had a LMAF on a stock hci blown setup. after i upgraded my hci, i contacted aed and told them my setup. they recommended i swap out to a pro-m 80mm maf which i did. tune came out great and it's been running strong.

i would ask the tuner what they recommend.

[ December 09, 2010, 05:33 PM: Message edited by: stangin' ]
 
Posted by 2TONE (Member # 4216) on :
 
I also was going to run the lightning mass air ,then I also talked to aed and they said pro-m..so 75MM is what I will be running
 
Posted by 50Reasons (Member # 6452) on :
 
Pro m meter 80 mm and make sure it's for a supercharger
 
Posted by BLoWN FR500 (Member # 8766) on :
 
Well Nextgen recommended lightning mass air and my tune came out like shit, cars boggin/misfiring. Big power loss! So I'm tryna switch it up
 
Posted by 50Reasons (Member # 6452) on :
 


[ December 10, 2010, 06:38 AM: Message edited by: 50Reasons ]
 
Posted by 50Reasons (Member # 6452) on :
 
quote:
Originally posted by BLoWN FR500:
Well Nextgen recommended lightning mass air and my tune came out like shit, cars boggin/misfiring. Big power loss! So I'm tryna switch it up
I'm running a 306 with heads cam intake 42lb inj vortech S trim whith no tune car runs smooth
 
Posted by 510.86.notch (Member # 9892) on :
 
quote:
Originally posted by BLoWN FR500:
Well Nextgen recommended lightning mass air and my tune came out like shit, cars boggin/misfiring. Big power loss! So I'm tryna switch it up
NEXtGEN thats where you went wrong..they just want your money.
 
Posted by SteveL (Member # 1241) on :
 
quote:
Originally posted by BLoWN FR500:
Also how many millimeters should I get as well
Pro M has some good info on selecting the right size here:

http://www.promracing.com/the-facts-about-mass-air-flow-meters-page-9

Using larger than needed MAFs or throttle bodies does not make more horsepower.
 
Posted by 92stangLX (Member # 3252) on :
 
If you car is already tuned for a lightning MAF then you will need a retune. Are you sure it's the MAF? I would suggest bringing it back to Nexgen and get them to sort it out before swapping parts.

SCT MAF is probably one of the best and will require a tune to work with your car.
 
Posted by 1993lx50 (Member # 10246) on :
 
My bad for jumping in but I almost got the same set up and I'm about to go with 42s n lightning mass air that mass air isn't that good as the pro m or what
 
Posted by AR_Stang (Member # 10223) on :
 
Im in the same boat, 42lb injectors with a lmaf but with a turbo setup on a fox.
 
Posted by CobramanPhil (Member # 2170) on :
 
There is absolutely nothing wrong the the LMAF itself. To be honest the aftermarket manufacturers barely come close. The meter offers good resolution at idle and low flow points allowing for good idle tuning/control and it also offers decent range for applications using enough fuel to require 42# injectors. Now if you are going big...a combo that will peg the LMAF then of course you need something bigger(not necessarily better). I've seen 480rwhp blown 302 combos with various injectors 42-50-60lbs) and they do come close if not right on pegging the meter (with 42-50 injectors getting dangerously high in duty cycle).

I guess it depends on what your current combo is...
 
Posted by BLoWN FR500 (Member # 8766) on :
 
I guess Nextgen is where i will be heading this week. Thanks for all the help guys
 




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