Lightning 90mm MAF vs 03/04 90mm MAF?

REX-RACER

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This has probably been covered here guys so I apologize up front. It's a pretty simple question but I did a search and couldn't find what I needed so . . .

What's the difference between a 90mm Lightning MAF and a 90mm 03/04 MAF? Don Lasota is setting up an E85 tune for me and when I told him I had a 90mm MAF he needed to know which one I had. I didn't even know they were different?

Is the MAF transfer function different? Would one work better than the other w/ 42 lbs EV1 injectors and a Stieg ported intake w/ JLT CAI & 62mm tb? The car is N/A for now but will soon be running a 150 shot. Eventual plans are for ported 03 heads + cams.

Thanks for any insight!
 

REX-RACER

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Get a BA 2400-2600 and sell that one you have!

Thanks for the suggestion, but can you tell me why? I bought this L MAF new a few months ago so I'm not quite ready to just toss it aside yet unless there's a really compelling reason. Car is gonna stay n/a for the most part except for the N2O shot and the heads and cam thing are at least a year or two off.
 

Black Cobra

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Is the MAF transfer function different?

I have 2 value files for the lightning 90mm MAF; 1 for LMAF and the other for EEC IV. The MAF xfer function is close to the stock AMZ2 Cobra tune but all three are different. The lightning maf shows a little more air at the same maf count except at max counts. I dont see any advantage here; I'm with Brutal Metal...sell the lightning and get something with more capacity.

Sample:

AMZ2________________Lightning (LMAF)
Counts___Lbs/min___Counts____lbs/min
1023.984__63.972___1023.984__62.382
_829.188__34.948____829.188__35.043
_629.688__16.39_____629.391__16.673
 
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