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Old 07-18-2011, 12:10 PM   #1
MaxPower
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Exclamation Little Help? MAF wiring - Stock GT vs LS3/LS7 Maf Card?

I'm debating on getting an extension from Casper w/ IAT breakout, or just extending my wires to reach the MAF plug.


Either way, does anyone know the pinouts on the STOCK MAF vs. the LS7 MAF card?? I don't want to fry the sensor by just "plugging it in".


Oh, and the stock GT connector plugs right into the LS7 MAF card w/o issues - but I'm SURE there's a wiring difference???


Some reference pics:



Stock wiring:



Need about 6" extension to reach under the tube:



HELP!
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Old 07-18-2011, 04:33 PM   #2
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Got my answer from the other forum... FYI for reference!

Quote:
G8
Pin - Wire - Circuit - Function

A - 0.5 YE - 492 - MAF Sensor Signal
B - 0.5 PK - 439 - Ignition 1 Voltage
C - 0.5 BK - 450 - Ground
D - 0.5 BN/RD - 472 - IAT Sensor Signal
E - 0.5 BN/WH - 2760 - Low Reference

LS7
Pin - Wire - Circuit - Function
A - 0.35 YE - 492 - Mass Air Flow (MAF) Sensor Signal
B - 0.8 BK/WH - 451 - Ground
C - 0.5 PK - 539 - Ignition 1 Voltage
D - 0.35 TN - 2760 - Low Reference
E - 0.35 TN - 472 - Intake Air Temperature Sensor Signal
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OLD: 2009 MGM G8 GT
Doug Thorley Tri-Y's, No Cats, SOLO Mach Shorty, Rotofab, HSRK, HPTuners Tuned: 12.8 @ 109 NA
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11.63 @ 124.9mph 2.06 60' - Stock cam, stock converter
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Old 10-14-2012, 06:45 PM   #3
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All you have to do is swap the pink and the black wires...
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Pat G Tune & DOD cam, Rick C Intake & TB, 4IN LS7 MAF, Ported Heads, Circle D 2600 Stall
VCM CAI, OBX Exhaust, SLP UDP,H&R springs, Koni Shocks
BP catch can, BMR Bushings/suspension/chassis
V Brembo's, Slotted/Drilled Rotors, 3.27s Gears, Zex Wet Shot


Bolt ons Street tires
12.649@107.817 60ft 1.96 Da 700ft

Heads/Cam pre stall Street tires
12.16@114.21 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.68@123.19 60ft 1.95 DA 200ft
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Old 10-14-2012, 10:03 PM   #4
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Quote:
Originally Posted by The Yeti View Post
All you have to do is swap the pink and the black wires...
I hope so....... thats all i did!
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Old 10-14-2012, 10:54 PM   #5
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Quote:
Originally Posted by dblaron View Post
I hope so....... thats all i did!
I just went off what I found on the other forum from the site sponsor that sold the 90mm maf with LS3/LS7 card. Had Pat G tune it and it was all good
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Pat G Tune & DOD cam, Rick C Intake & TB, 4IN LS7 MAF, Ported Heads, Circle D 2600 Stall
VCM CAI, OBX Exhaust, SLP UDP,H&R springs, Koni Shocks
BP catch can, BMR Bushings/suspension/chassis
V Brembo's, Slotted/Drilled Rotors, 3.27s Gears, Zex Wet Shot


Bolt ons Street tires
12.649@107.817 60ft 1.96 Da 700ft

Heads/Cam pre stall Street tires
12.16@114.21 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.68@123.19 60ft 1.95 DA 200ft
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Old 10-14-2012, 11:24 PM   #6
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Holy old thread! Haha
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Old 10-14-2012, 11:30 PM   #7
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Quote:
Originally Posted by 04GT View Post
Holy old thread! Haha
Old school bump. This has become a very popular subject among G8 owners every where now
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Pat G Tune & DOD cam, Rick C Intake & TB, 4IN LS7 MAF, Ported Heads, Circle D 2600 Stall
VCM CAI, OBX Exhaust, SLP UDP,H&R springs, Koni Shocks
BP catch can, BMR Bushings/suspension/chassis
V Brembo's, Slotted/Drilled Rotors, 3.27s Gears, Zex Wet Shot


Bolt ons Street tires
12.649@107.817 60ft 1.96 Da 700ft

Heads/Cam pre stall Street tires
12.16@114.21 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.68@123.19 60ft 1.95 DA 200ft
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Old 11-28-2012, 09:34 PM   #8
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What does the LS7 MAF do for us? I'm in a 6.2 but I'm still using my L76 electrical components.
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Old 11-29-2012, 12:14 AM   #9
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Quote:
Originally Posted by Sunder View Post
What does the LS7 MAF do for us? I'm in a 6.2 but I'm still using my L76 electrical components.
It is a card style maf that allows you to place it into a larger housing if you want more air flow. It is also a lot more responsive. Almost twitchy to a point IMO.
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Pat G Tune & DOD cam, Rick C Intake & TB, 4IN LS7 MAF, Ported Heads, Circle D 2600 Stall
VCM CAI, OBX Exhaust, SLP UDP,H&R springs, Koni Shocks
BP catch can, BMR Bushings/suspension/chassis
V Brembo's, Slotted/Drilled Rotors, 3.27s Gears, Zex Wet Shot


Bolt ons Street tires
12.649@107.817 60ft 1.96 Da 700ft

Heads/Cam pre stall Street tires
12.16@114.21 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.68@123.19 60ft 1.95 DA 200ft
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Old 11-30-2012, 09:27 AM   #10
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Besides better response, is there any additional HP to be made on a bolt-on (w/Rotofab intake) & cam'd G8 with the LS7 MAF?
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Old 03-20-2013, 07:55 AM   #11
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Old thread bump.

Im looking for more info on this. HP gains on a bolt on car? Yeti are you running the 90mm MAF with your VCM? Any info on this subject would be appreciated along with where to buy the card and MAF housing.
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10.59 at 100.31 in the 1000.....8.33 at 88.13 in the 1/8....1.99 60 ft

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Old 03-20-2013, 07:43 PM   #12
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Also curious! Anything else needed to make it fully functional with my current HSRK and rotofab??
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Old 03-21-2013, 01:24 AM   #13
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Quote:
Originally Posted by Silver Bullet View Post
Old thread bump.

Im looking for more info on this. HP gains on a bolt on car? Yeti are you running the 90mm MAF with your VCM? Any info on this subject would be appreciated along with where to buy the card and MAF housing.
I"m running a 4in (102mm) maf housing with my VCM. The coupler from the filter housing to the MAF fits the larger 4in Maf just fine, but you have to by another coupler to fit the maf to the throttle body. I bought a silicon one I trimmed down as well as the LS7 Maf card and Specter 4in MAF from amazon.

I dunno know if there are any HP gains on a bolt on car, but I do know there are throttle response gains for sure.
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Pat G Tune & DOD cam, Rick C Intake & TB, 4IN LS7 MAF, Ported Heads, Circle D 2600 Stall
VCM CAI, OBX Exhaust, SLP UDP,H&R springs, Koni Shocks
BP catch can, BMR Bushings/suspension/chassis
V Brembo's, Slotted/Drilled Rotors, 3.27s Gears, Zex Wet Shot


Bolt ons Street tires
12.649@107.817 60ft 1.96 Da 700ft

Heads/Cam pre stall Street tires
12.16@114.21 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.68@123.19 60ft 1.95 DA 200ft
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Old 03-21-2013, 08:15 AM   #14
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Just to let anyone know that is looking for these parts the part number for the sensor appears to be 15865791.
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In The Garage: Yank 2800 stall, Eibachs, SLP UDP
10.59 at 100.31 in the 1000.....8.33 at 88.13 in the 1/8....1.99 60 ft

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Old 03-21-2013, 09:11 PM   #15
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Is there a part # for the tube?
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Old 03-22-2013, 07:03 AM   #16
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Quote:
Originally Posted by muller817 View Post
Is there a part # for the tube?
Ill PM you a link to the one I found as I dont think they are a sponsor for this site. If anyone has a link to one that we can get from a site sponsor feel free to post it.
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Mods: 4 Pistons Brembos, OBX Headers to Maxflows, Spectre CAI, Rick C Intake, HSRK, LS7 Maf and tuned by Pat G.
In The Garage: Yank 2800 stall, Eibachs, SLP UDP
10.59 at 100.31 in the 1000.....8.33 at 88.13 in the 1/8....1.99 60 ft

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Old 05-27-2013, 12:27 PM   #17
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Quote:
Originally Posted by The Yeti View Post
I"m running a 4in (102mm) maf housing with my VCM. The coupler from the filter housing to the MAF fits the larger 4in Maf just fine, but you have to by another coupler to fit the maf to the throttle body. I bought a silicon one I trimmed down as well as the LS7 Maf card and Specter 4in MAF from amazon.

I dunno know if there are any HP gains on a bolt on car, but I do know there are throttle response gains for sure.
What size coupler is needed to fit properly? 4"?
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Old 05-27-2013, 12:44 PM   #18
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So based on the wiring chart above you would switch B and C but wouldnt you also switch D and E?
Is the B and C only switch for those with HSRK? do you still need HSRK with this style MAF?i thought i read on here somewhere you didnt?
im running a rotofab if it matters, i noticed there isnt much room for a IAT next to the filter, and its only moved a couple inches anyway... sorry if this has been covered.
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Old 05-28-2013, 04:31 PM   #19
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bump...
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Old 05-28-2013, 08:41 PM   #20
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Quote:
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What size coupler is needed to fit properly? 4"?
Yes 4"
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