90mm MAF / KB ?

sgarlic

Founding Member

Apr 21, 2001

3,085

1

56

Dec 11, 2006

#1

• Dec 11, 2006

• #1

Ok, so as you guys may or may not know, Kenne Bell specifically recommends using only their 90mm MAF and big tube setup with their 99-04 kit. They also say the OEM maf is pegged at around 408rwhp..

Here's my question.

Are any of you 9psi KB guys using another MAF, say the 90mm Lightning/Cobra MAF, without modifying the KB tune? If so, are you having any problems? Is there even a difference between the "KB" MAF and the cobra MAF, or is it the same thing? Also, isn't the lightning MAF calibrated for 42 pound injectors? The KB kit uses 36#, so what's the trick around that?

 

jstreet0204

Active Member

Jun 26, 2003

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36

Winston Salem, NC

Dec 11, 2006

#2

• Dec 11, 2006

• #2

The LMAF and corbra mafs is not calibrated to any injector size. The injector size is handled in the tune. The MAF has a flow table that simply translates pounds per hour to a specific voltage. That table is programmed into the tune as the maf curve.

As to whether KB is just repackaging an OEM lightning or cobra maf, I don't know, but if the MAF's are different, you have to modify the tune to change it.

 

sgarlic

Founding Member

Apr 21, 2001

3,085

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Dec 12, 2006

#3

• Dec 12, 2006

• #3

Only one person on these forums with an opinion? Wow.

 

S

san~man

O-G

Founding Member

Nov 29, 1999

8,546

3

78

A little grass shack on a big lava rock

Dec 12, 2006

#4

• Dec 12, 2006

• #4

You may be better off posting this on MPH or Modularfords (KB tech section) for better results.

I think only a qualified installer or KB themselves can answer this correctly.

 

urban96

bubb rubb says:"woo woooooo"

Founding Member

Sep 24, 2002

3,464

1

69

Syracuse, NY

Dec 12, 2006

#5

• Dec 12, 2006

• #5

i have the bigtube kit. pretty sure its just the L maf. i would assume you will need a retune but i would ask a tuner or KB first

 

J

Jakes

New Member

May 8, 2004

84

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0

Dec 16, 2006

#6

• Dec 16, 2006

• #6

Everything jstreet said is correct. By the way, when I got my KB blower they told me the stock maf was good to 500hp. I wonder if they're trying to sell a 90mm maf/tube kit..... ya think.

 

DBMSTNG

I fantasize about it being BIG!

Founding Member

Apr 23, 2002

2,120

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56

not quite here

Dec 16, 2006

#7

• Dec 16, 2006

• #7

do not change the maf without changing the tune.