Little Help? MAF wiring - Stock GT vs LS3/LS7 Maf Card? - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 38 (permalink) Old 07-18-2011, 12:10 PM Thread Starter
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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!

NEW(er): 2008 335i, JB4, Catless downpipes, E85.
OLD: 2009 MGM G8 GT
Doug Thorley Tri-Y's, No Cats, SOLO Mach Shorty, Rotofab, HSRK, HPTuners Tuned: 12.8 @ 109 NA
Garage Built TwinTurbo: 535/600 Mustang Dyno
11.63 @ 124.9mph 2.06 60' - Stock cam, stock converter
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post #2 of 38 (permalink) Old 07-18-2011, 04:33 PM Thread Starter
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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

NEW(er): 2008 335i, JB4, Catless downpipes, E85.
OLD: 2009 MGM G8 GT
Doug Thorley Tri-Y's, No Cats, SOLO Mach Shorty, Rotofab, HSRK, HPTuners Tuned: 12.8 @ 109 NA
Garage Built TwinTurbo: 535/600 Mustang Dyno
11.63 @ 124.9mph 2.06 60' - Stock cam, stock converter
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post #3 of 38 (permalink) Old 10-14-2012, 06:45 PM
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All you have to do is swap the pink and the black wires...


Pat G Tune & DOD cam, RCR Intake & TB, 4IN MAF
Ported stock Heads, 2600 Stall, VCM, OBX, UDP
H&Rs, Konis, BMR, Brembos, Slotted/Drilled Rotors
3.27 Gears, ZL1 pump, LSA awaiting install

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

Heads/Cam pre stall Street tires
12.16@114.2 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.48@124 60ft 1.83 DA 2000ft
second gear pull
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post #4 of 38 (permalink) Old 10-14-2012, 10:03 PM
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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!


2009 GT Prem. Sport. Sun Roof.
Paddle Shifters, BMR Sways, Eibachs, Koni's, Brembos, 3.45s, LS2 cam, 918 springs, 1.85 rockers, Spectre CAI, Rick C Intake/TB/heads , LS7 MAF, Custom Axle Backs, JBA LT's,

Currently Installing RCR 215/223 .609. 615 114+1

Pat G Tuned.

12.23 @ 113.7 mph 1.98 60' 1,000' DA

20X9-35 TSW Nurburings 255/35 Cooper RS3-S
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post #5 of 38 (permalink) Old 10-14-2012, 10:54 PM
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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


Pat G Tune & DOD cam, RCR Intake & TB, 4IN MAF
Ported stock Heads, 2600 Stall, VCM, OBX, UDP
H&Rs, Konis, BMR, Brembos, Slotted/Drilled Rotors
3.27 Gears, ZL1 pump, LSA awaiting install

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

Heads/Cam pre stall Street tires
12.16@114.2 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.48@124 60ft 1.83 DA 2000ft
second gear pull
The Yeti is online now  
post #6 of 38 (permalink) Old 10-14-2012, 11:24 PM
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Holy old thread! Haha

2009 M6 G8 GXP - Sold
710rwhp/742rwtq
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post #7 of 38 (permalink) Old 10-14-2012, 11:30 PM
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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


Pat G Tune & DOD cam, RCR Intake & TB, 4IN MAF
Ported stock Heads, 2600 Stall, VCM, OBX, UDP
H&Rs, Konis, BMR, Brembos, Slotted/Drilled Rotors
3.27 Gears, ZL1 pump, LSA awaiting install

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

Heads/Cam pre stall Street tires
12.16@114.2 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.48@124 60ft 1.83 DA 2000ft
second gear pull
The Yeti is online now  
post #8 of 38 (permalink) Old 11-28-2012, 09:34 PM
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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.


2008 G8 GT - 11.89 @115 MPH
2010 M3 E92 - ???
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post #9 of 38 (permalink) Old 11-29-2012, 12:14 AM
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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.


Pat G Tune & DOD cam, RCR Intake & TB, 4IN MAF
Ported stock Heads, 2600 Stall, VCM, OBX, UDP
H&Rs, Konis, BMR, Brembos, Slotted/Drilled Rotors
3.27 Gears, ZL1 pump, LSA awaiting install

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

Heads/Cam pre stall Street tires
12.16@114.2 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.48@124 60ft 1.83 DA 2000ft
second gear pull
The Yeti is online now  
post #10 of 38 (permalink) Old 11-30-2012, 09:27 AM
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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?


2008 G8 GT - 11.89 @115 MPH
2010 M3 E92 - ???
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post #11 of 38 (permalink) Old 03-20-2013, 07:55 AM
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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.

-2009.5 MSM Premium GT-

Mods:Yank 2800 stall, Brembos, OBX Headers to Maxflows, VCM, RCR Intake, HSRK, LS7 Maf and tuned by Pat G.

10.53 at 100 in the 1000'.....8.25 at 88 in the 1/8....1.92 60 ft

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post #12 of 38 (permalink) Old 03-20-2013, 07:43 PM
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Also curious! Anything else needed to make it fully functional with my current HSRK and rotofab??
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post #13 of 38 (permalink) Old 03-21-2013, 01:24 AM
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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.


Pat G Tune & DOD cam, RCR Intake & TB, 4IN MAF
Ported stock Heads, 2600 Stall, VCM, OBX, UDP
H&Rs, Konis, BMR, Brembos, Slotted/Drilled Rotors
3.27 Gears, ZL1 pump, LSA awaiting install

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

Heads/Cam pre stall Street tires
12.16@114.2 60ft 1.75 Da -200

After Stall
11.82@115.9 60ft 1.66 DA 400ft

Zex 125shot
11.48@124 60ft 1.83 DA 2000ft
second gear pull
The Yeti is online now  
post #14 of 38 (permalink) Old 03-21-2013, 08:15 AM
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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.

-2009.5 MSM Premium GT-

Mods:Yank 2800 stall, Brembos, OBX Headers to Maxflows, VCM, RCR Intake, HSRK, LS7 Maf and tuned by Pat G.

10.53 at 100 in the 1000'.....8.25 at 88 in the 1/8....1.92 60 ft

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post #15 of 38 (permalink) Old 03-21-2013, 09:11 PM
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Is there a part # for the tube?
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post #16 of 38 (permalink) Old 03-22-2013, 07:03 AM
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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.

-2009.5 MSM Premium GT-

Mods:Yank 2800 stall, Brembos, OBX Headers to Maxflows, VCM, RCR Intake, HSRK, LS7 Maf and tuned by Pat G.

10.53 at 100 in the 1000'.....8.25 at 88 in the 1/8....1.92 60 ft

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post #17 of 38 (permalink) Old 05-27-2013, 12:27 PM
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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"?


2014 SS "Houston Stock"

Rotofab
RCR Intake/RCR TB
LS7 MAF
SW LTs-3" catted X
Corsa Mufflers
Pat G Tune


12.08@114.45 (stock tires suck)
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post #18 of 38 (permalink) Old 05-27-2013, 12:44 PM
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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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post #19 of 38 (permalink) Old 05-28-2013, 04:31 PM
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bump...
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post #20 of 38 (permalink) Old 05-28-2013, 08:41 PM
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Quote:
Originally Posted by 768MPH View Post
What size coupler is needed to fit properly? 4"?
Yes 4"
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