102mm MAF Housing and LS3 Sensor

[Brian@RPT]

The 102mm MAF Housings are in stock and includes the LS3 Sensor. Both are $225 shipped. This works on many combinations and I used it on my stock LS3 Vette. The housing is polished aluminum and accepts a 4" couplers. If this is being installed on a L76, an adapter harness is required or switch out the power and ground pins. The adapter is an additional $20.

[DarkPhoenix]

Very nice, does it require any tuning (maf tables)?

Will it work with the vararam?

[Brian@RPT]

The 102 mm MAF may require recalibration of the MAF Tables depending on mods. I have not seen the VR G8 CAI up close, I would not see why not. It worked with the VR for my LS3 Vette with no issues. With the 75mm MAF housings with the grid sensors, the 102 mm Housing required tuning. Not so much with the LS3 style sensors in the newer vehicles.

[2QUIK4U]

Any idea how much power this will gain on a cammed car?

[DarkPhoenix]

Do you have any pics? Does it require a different wiring harness, or is an adapter included? It would be a good way to remove the restricton of the stock maf from the intake tract. I have been thinking of this mod for a little while, I was looking at it from another vendor (non-board sponsor) but your price is better :)

[Brian@RPT]

The sensor is included and no need for any harness. The pin out is the same and posted some pics below.

[Brian@RPT]

Opening up the intake tract to 4" will definitely help a cammed car. The stock MAF is really limited and as you can see, a restriction. Just removing the MAF picked up 10 rwhp on a LS2 GTO with both SD and MAF being properly tuned. With the 102 mm MAF and proper tuning, the low end torque will be much improved.

[DarkPhoenix]

Wow, it is beautiful! Much nicer than the other one that I was looking at.
I think I would like to get one, but am concerned that since the 4" diameter will flow a lot more air than the stock maf sensor, that it will not accurately measure the incomming air.

On my old '02 trans am, when I went from the 75mm maf to an 85mm one, I had to adjust the maf table for the change in flow rate. Just thinking outloud.

[Brian@RPT]

I have installed these on the LS1 Based F-Bodies and had no issues with monitoring the airflows. On the C5 Corvettes, that is a different story. Placement is key to getting the airflow measurement right. With the LS1 based vehicles, tuning is required. If the 102 mm MAF is too far away from the TB, the MAF table will bottom out and causing bucking.

Just installed/tuned one on a 1998 Camaro 408ci and put down 517 rwhp/508 ft-lbs with stock L92 Heads. These MAF Housings/Sensors have seen 800+ rwhp in my shop and works great.

[johnbell2]

Just now seeing the pictures... it looks sharp, I like it! You aren't making it easy for me to save for furniture money :)

[Brian@RPT]

It is a nice and shiney piece:)

[silver]

you got a pm!

[gr8lover]

does this incorporate the IAT sensor in this or do we need to relocate that?.... just curious.... also.... how much different is the Ls3 sensor versus the L76 (ls2?) sensor???? will it have a bigger range of readings???

[Brian@RPT]

The LS3 Sensor is a "card" type sensor and incorporates the IAT sensor as well. The sensor itself if much more stable and does not flucuate like the 85mm MAF Sensors do at WOT. The "grid" type sensors have their limitations and the screens allow for better laminar flow over the grid. The LS3 Sensor does not need the screen and the sensor itself is not a restriction, unlike the 85mm MAF's. The difference between the wiring for the L76 and LS3 is 2 wires. The power and ground are reversed. You will either need an adapter harness, which I make, or switch out the 2 pins. I will be making the IAT Relo Harnesses as well and will stock a 102 mm version for the L76. The sensor itself is capable of reading 4,096 g/sec and the only limitation is the PCM MAF table range. With the 102mm Housing, the low end torque is much improved.

[Patrick G]

I just installed this 102mm MAF from Brian. It works really well, but you will need to load in an LS3 MAF table from a 2010 Camaro to get you into the zip code to where the car will start and run. I had to add about 6-7% airflow at lower Hz readings and around 12% at higher readings over and above the 2010 Camaro tables. As Brian mentioned, the readings are much more stable than with the L76 MAF. You'll just need tuning software to make best use of the item. At my power level, the stock MAF was costing me 5-6rwhp in restriction. The large MAF gets the power back.

[Brian@RPT]

Glad it worked out and there are some big changes required, at times. I had to add 50% to low end of the MAF for a 1998 Tahoe with a 421 engine.

[Brian@RPT]

Ordered another batch:)