V6 Overkill Tune Thread. - Page 5 - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #81 of 92 (permalink) Old 07-06-2016, 07:48 PM Thread Starter
Les
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Just remember Patience bro. we know its a B#$%^

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2009.1 G8 SV6 Tuned.
Overkill Tune 3rd Gen.
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post #82 of 92 (permalink) Old 07-07-2016, 09:09 AM
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Did you get it done scottvette93!?? I need to buy the tune from overkill I just never get around to doing it...
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post #83 of 92 (permalink) Old 07-07-2016, 02:42 PM
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Originally Posted by Michael09g8 View Post
Did you get it done scottvette93!?? I need to buy the tune from overkill I just never get around to doing it...
So I did it. I'm a novice and so it took 4 hours, two beers, lots of swearing and a few busted fingers, but I swapped it out.

Note: Les, Will, I just couldnt get the blower housing out. Just wouldn't happen.

So here was my process:
Remove the footwell plate, kick plate and side panels on passenger side.
Remove the glove box trim and unscrew 7 screws to detatch glove box, and unhook trunk wires. Unscrew the passenger foot air duct, and unconnect as many wire connectors as you can in the area, you'll need the hand room.

Then unscrew the blower motor and remove. Unscrew and unbolt the blower motor housing. I had to go under the hood to unbolt a 10mm bolt located next to the cabin air filter. This lets you wiggle the housing around a little bit, but was never fully able to remove the blower housing. Then take a 90° screwdriver and unscrew one of the screws holding the black box (with green white & black wire connectors) to the blower housing. That lets you wiggle that around too.

You can see the TCM this whole entire time, but now reach in the gap and slide the lock toward the back of the car and unplug it. Now you'll find the TCM can move around, but is trapped by a thick black wire shield/housing thing. Swear a little and try to yank and move around the blower housing, and everything. I had to bend the big metal tab on the right side for extra room. Grab the wire shield thing and pull it as best you can to yank and pry the TCM under and down the bottom. Phew.

Reward yourself with a drink and reverse the process. It took 3 hours to pull stull apart, 1 to put it back together. Worth it? I think so, I can now get up to like 6600rpm in 1st at about 55mph, which is fun. Shifting feels decently better, but not so much different.

But all in all, Im glad I swapped out the modules. It feels like the car is right out the factory. Swap those modules and send em back for your 175 bucks.

Hope this helps!
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post #84 of 92 (permalink) Old 07-07-2016, 11:54 PM
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wow sounds like you had a heck of a time but at least it was worth it ! thinking eventually one of this days getting the tuned modules to swap at least i know what im in for lol
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post #85 of 92 (permalink) Old 07-08-2016, 12:00 AM Thread Starter
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Whatever makes it easier for you.

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2009.1 G8 SV6 Tuned.
Overkill Tune 3rd Gen.
GT Intake system
76mm Throttle body.
X-Pipe,Custom Axlebacks.
3/4" Intake Spacers.
GXP Front Clip,GXP Diffuser.
K&N CAI
Custom Rad Cover.
10" Pioneer Sub and Box.
And More....

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post #86 of 92 (permalink) Old 07-23-2016, 12:44 PM
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Finally got the tune for "our" V6 ,went with HP tuners from Will . Car drives much better, shifts are aggressive versus the stock lazy setup , glad we finally got it done . Thanks to Will and Les for all the R&D
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post #87 of 92 (permalink) Old 07-23-2016, 01:35 PM Thread Starter
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Originally Posted by Jamie g8 View Post
Finally got the tune for "our" V6 ,went with HP tuners from Will . Car drives much better, shifts are aggressive versus the stock lazy setup , glad we finally got it done . Thanks to Will and Les for all the R&D
Nice PM sent.

OGOC Member
2009.1 G8 SV6 Tuned.
Overkill Tune 3rd Gen.
GT Intake system
76mm Throttle body.
X-Pipe,Custom Axlebacks.
3/4" Intake Spacers.
GXP Front Clip,GXP Diffuser.
K&N CAI
Custom Rad Cover.
10" Pioneer Sub and Box.
And More....

Les is offline  
post #88 of 92 (permalink) Old 07-26-2016, 02:06 PM
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So I had the Overkill tune done last winter when I had a CAI and aftermarket axle backs. I've since removed the resonators, mid-muf and installed an X-pipe. Are any of the upgrades I've done a cause to have it re-tuned? Or is that not how this tune works?

I'm considering doing headers and high-flow cats, would this warrant a re-tune?

Thanks in advance.

2008 G8 V6: Eibach lowering springs, 18" staggered rims, K&N CAI, Series 4400 Flow Master axle backs with FlowMaster tips, radiator cover, tinted tails, silhouette of G8 third brake light.
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post #89 of 92 (permalink) Old 07-26-2016, 02:16 PM Thread Starter
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Quote:
Originally Posted by mrathell View Post
So I had the Overkill tune done last winter when I had a CAI and aftermarket axle backs. I've since removed the resonators, mid-muf and installed an X-pipe. Are any of the upgrades I've done a cause to have it re-tuned? Or is that not how this tune works?

I'm considering doing headers and high-flow cats, would this warrant a re-tune?

Thanks in advance.
No retuning required for those mods. With headers yes.

The tune was designed for minor exhaust mods. The tune works better if the car breathes better.

OGOC Member
2009.1 G8 SV6 Tuned.
Overkill Tune 3rd Gen.
GT Intake system
76mm Throttle body.
X-Pipe,Custom Axlebacks.
3/4" Intake Spacers.
GXP Front Clip,GXP Diffuser.
K&N CAI
Custom Rad Cover.
10" Pioneer Sub and Box.
And More....

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post #90 of 92 (permalink) Old 12-27-2018, 07:54 PM
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Do you still have your G8 Les? Is Will still doing these tunes? I emailed but haven't got a reply yet. Hoping a tune will clean up the lag in my transmission. Thanks!
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post #91 of 92 (permalink) Old 01-27-2019, 09:06 PM
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Originally Posted by rockinlespaul View Post
Do you still have your G8 Les? Is Will still doing these tunes? I emailed but haven't got a reply yet. Hoping a tune will clean up the lag in my transmission. Thanks!
????
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post #92 of 92 (permalink) Old 05-07-2019, 11:28 AM
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What tune did you end up going with?

09 MSM V6, Premium Comfort & Sound, KN CAI, Solo Performance Mach-Balanced Cat Back Exhaust
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