Thread: *HOW TO* LS7 Mass Air Flow

Thanks to nmp0098 for doing the swap first this gave me all the go ahead i needed to go ahead with the swap.


Parts list
# 15865791 Z06 MAF (card style)
Saxon PC honey comb airflow straightner for 4' Tubing.https://us-dc1-order.store.yahoo.net...unYvhjCW2osw--


4'Air filter of course
3.25-4inch Adapter for stock LS4 TB to 4' piping
22deg. bend for fender well or 45 deg. for CAI guys
MAF flange adapter---Ebay all day.




MAF should be placed in a straight section and preferbly away from the TB as possible.
you will also have to repin your maf connector which is very easy. however youll want to verify your wiring diagram against mine, because they vary throughout the years mine is an 06 here is the diagram followed by the link for how to repin.
http://www.powrmax.com/Pin%20Switch%20Slideshow.html


whats awesome about these youll never max one of these out, the throttle response is way better and i mean way better and the intake sound is amazing. Ill make a enclousure for my filter and update when i get around to it. im a bigger fan of pulling air from the fender instead of next to the radiator.
Of course you will need to tune, however you can start up and drive but i assume no damage if you mess something up yourself. You will need the 2007 Z06 MAF TABLES and IAT Tables (NOTE** Tuner will need to cut down IAT tables by 15% to get temps to read ambient) or your tuner can modify accordingly. Here are some pics i will make it cleaner when i get around to it.














ls4Lowtable.txt[ATTACH]11704[/ATTACH

why??

Because the ls4 maf sucks essentially its the same piece for the v6 grand prix. Its slow to respond to temperature. its 3' in diameter.

Is this why ur selling ur old intake box?

lol yes. absolutley. ive had the zo6 maf and ls6 intake sitting around for a while now just getting around to getting this on.

well pm me when you wanna sell it. i leave for cali tomorrow but i will be back a month later and i like the way that box looks

UPDATE: pics of the factory GM LS4 MAF
besides choking the motor even more than the Intake manifold the factory Maf measures 3.11 inches I.D inside...which is consistent with the Throttle body inlet however. there is a airfoil inside the Maf...those who are familiar with airplanes and wing designs know the principal of high/low pressure. the wire side that is of course on the low pressure side but the problem each split section of the maf is around 1.2 inches in diameter which gives you an area of about 2.5 inches. Upgrading this choke point in the intake greatly improved everything about the throttle response/mileage and probably picked up some hp with it. here are some pics of the factory MAF apart. BTW anybody wanting to know a price on the card style mafs they are CHEAP got mine for 45bucks shipped on EBAY. bought some aluminum tubing and made it happen.

http://www.saxonpc.com/100mm-cells-for-100.html
When u were on there ordering what did u get for cell size and did u go with 103mm or 100

Also what kinda flange. I searched on eBay and there were tons of options

I made my own housing so can't speak on that. and yea 103mm

What ratio did u go with. It has 4:1 5:1 6:1 so on

I made my own housing so can't speak on that. and yea 103mm

O I thought u used the honey comb from that site

I did but I put the honey comb in the maf housing

i dont have a ls4, but i put my lq4 maf straight on my throttlebody with air filter attached to the maf, what are the reasons for now putting it close to the throttlebody?

Originally Posted by TEK310

i dont have a ls4, but i put my lq4 maf straight on my throttlebody with air filter attached to the maf, what are the reasons for now putting it close to the throttlebody?

Just to clarify are you asking is it better to have your maf close to the throttle body, or farther away? im not getting what youre asking exactly

yes the reasons for not putting the maf close to the tb

Depends...you'd have to taka look at your scanner an look at your maf hz as the car is running. If you're maf s extremely sensitive to airflow (like card mafs) youd need to reposition it.