V6 Overkill Tune Thread. - Page 4 - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #61 of 92 (permalink) Old 11-02-2015, 06:35 PM
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It's quite pricey Les. $163 plus tax for what I believe is 3 or 4 runs. I checked with Costco and their 91 that I have in the tank right now is non ethanol top tier fuel like V power from Shell. That's what I was tuned on so I'm looking forward to seeing what the real numbers are.

09.1 G8 GT Sp. Prem. w GXP Facia. Roto Fab covers +chrome caps / Spyder Tail Lamps/VIM Hack c/w rear cam. BMR Sways/ Arms/ Toe Rods/ Rear Cradle Inserts+ Diff bushings/H&R Coilovers / Russell ss lines w CTSV Calipers+2015 SS Rotors . Staggered Avant Garde M310's . KOOKS Mids w HFCs. Corsa w Volant CAI /Dr. Phil 91 Octane Tune on Dyno. RCR Intake & TB/Catch Can w Little Lunati DoD Delete. ZL1 Converter and CNC'd heads by Aggressive Performance MI.
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post #62 of 92 (permalink) Old 11-02-2015, 06:44 PM Thread Starter
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Holy crap no way. But I use shell 91 in mine. I will find another dyno that's a crazy price.

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2009.1 G8 SV6 Tuned.
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post #63 of 92 (permalink) Old 11-03-2015, 07:12 AM
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Yea... I figured that many would find it hard to justify but these guys know that they have the only Dyno of this caliber within 100 miles easy. This one has the ability to get the driveline loss and a bunch of other software. I think that I saw an RSP sticker on a blue Porsche that was driven by someone who was shoving their weight around on the street. He wanted to cut me off after hearing my exhaust and exert his uber German car superiority. I managed to crush that idea with a brief hit of WOT and then he blew by me later and I just let him go. It was a Carrera S so no doubt he would have taken me. I think that he was modded because the road was wide open and he quickly went hyperspace drive. Nice car but the driver needs to tone it down a bit. Speaking of fast, I encountered a guy with a Lincoln MkVIII that was obviously supercharged. I rolled past him on I 94 east a few weeks back and later he was in front of me after I backed off to let a truck in. He laid into it before he took an exit. Did that thing ever haul out! He nearly put a half a mile on me in less than 10 seconds. What a sleeper! It's nice to have a car with bumped up power and the pursuit of the guys with the V6's for better performance is good thang brother. These are great cars to drive in any form. It's also fun to surprise people a bit when you have a sleeper.
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post #64 of 92 (permalink) Old 11-03-2015, 07:15 AM Thread Starter
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Maybe in the spring I will do that. Im going to do some more mods over the winter. So all that info will be useful.

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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 #65 of 92 (permalink) Old 11-03-2015, 11:58 AM
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Just got back and all is well in dynoland. I will post up when I get the chance. Numbers were not as big as I was expecting but the power curve was fat with the current tune which the dyno operator said was well balanced for the mods.

09.1 G8 GT Sp. Prem. w GXP Facia. Roto Fab covers +chrome caps / Spyder Tail Lamps/VIM Hack c/w rear cam. BMR Sways/ Arms/ Toe Rods/ Rear Cradle Inserts+ Diff bushings/H&R Coilovers / Russell ss lines w CTSV Calipers+2015 SS Rotors . Staggered Avant Garde M310's . KOOKS Mids w HFCs. Corsa w Volant CAI /Dr. Phil 91 Octane Tune on Dyno. RCR Intake & TB/Catch Can w Little Lunati DoD Delete. ZL1 Converter and CNC'd heads by Aggressive Performance MI.
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post #66 of 92 (permalink) Old 01-07-2016, 10:08 PM
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Im getting ready to get a CAI and want to eventually get the throttle body, MAF and overkill tune. Do I need to go with the ovekill CIA or can I go with Rotofab or K&N? I just cant afford to do all at once. Only mod is Solo axle back 2008 G8 V6. Thanks in advance.
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post #67 of 92 (permalink) Old 01-07-2016, 10:57 PM Thread Starter
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Originally Posted by Sdzworld View Post
Im getting ready to get a CAI and want to eventually get the throttle body, MAF and overkill tune. Do I need to go with the ovekill CIA or can I go with Rotofab or K&N? I just cant afford to do all at once. Only mod is Solo axle back 2008 G8 V6. Thanks in advance.
Hey bro, Get a CAI. Me personally have a k&n cai. The tune when you order it will come with a couple parts to replace but you need the get a CAI first then.

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 #68 of 92 (permalink) Old 01-07-2016, 11:21 PM
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Hey bro, Get a CAI. Me personally have a k&n cai. The tune when you order it will come with a couple parts to replace but you need the get a CAI first then.
Ok cool. Thanks for the quick reply. Much appreciated
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post #69 of 92 (permalink) Old 01-07-2016, 11:26 PM Thread Starter
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No problem, always here to here with this.
Trust me when it's all done you will not be disappointed.

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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 #70 of 92 (permalink) Old 07-05-2016, 10:19 PM
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I got the ECU and TCM today, after over a month of waiting. Only had time to swap in the ECU with mild 87 tune on my v6, but already a great difference! The hesitation is mostly gone, the engine quicker to rev and shift. Feels like a whole new machine.
This weekend Ill have enough time to pull out the glove box and swap the TCM, but already a big difference. Ill probably be sending back the old ecu, certainly no need for it now.
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post #71 of 92 (permalink) Old 07-06-2016, 08:08 AM
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Originally Posted by Scottvette93 View Post
I got the ECU and TCM today, after over a month of waiting. Only had time to swap in the ECU with mild 87 tune on my v6, but already a great difference! The hesitation is mostly gone, the engine quicker to rev and shift. Feels like a whole new machine.
This weekend Ill have enough time to pull out the glove box and swap the TCM, but already a big difference. Ill probably be sending back the old ecu, certainly no need for it now.
Have fun getting that tcm out
Mine was hell to get out lol
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post #72 of 92 (permalink) Old 07-06-2016, 08:53 AM Thread Starter
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Yes the TCM is a pain. Just don't rush take your time.

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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 #73 of 92 (permalink) Old 07-06-2016, 09:58 AM
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Have fun getting that tcm out
Mine was hell to get out lol
How noticeable of a difference did swapping the TCM make?
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post #74 of 92 (permalink) Old 07-06-2016, 05:41 PM Thread Starter
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How noticeable of a difference did swapping the TCM make?
Yes it does. It changes the shift patterns and it shifts smoother.

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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 #75 of 92 (permalink) Old 07-06-2016, 05:48 PM
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Yes it does. It changes the shift patterns and it shifts smoother.
Im right in middle of swapping it... holy **** what a b**** with all the wire connectors and blower motor. I can see the damn TCM... its just wonderfully nestled behind everything
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post #76 of 92 (permalink) Old 07-06-2016, 05:52 PM Thread Starter
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Yes it is in behind and a pain. I know how you feel. I've installed a few and smaller hands help.
Any issues let me know. I'm here for advice,

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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 #77 of 92 (permalink) Old 07-06-2016, 06:03 PM
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Yes it is in behind and a pain. I know how you feel. I've installed a few and smaller hands help.
Any issues let me know. I'm here for advice,
A little bit more detail on how to remove the blower motor would be helpful - its kinda hard to see what needs unscrewing
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post #78 of 92 (permalink) Old 07-06-2016, 06:23 PM Thread Starter
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the whole cover that holds the blower motor, needs to come out. there are a couple screws up top of that blower motor cover. You may need a long phillips screwdriver, to remove the left upper screw.
But your right lots of screws to remove, Plus its clipped on to the rear cover.
These clips may break but thats ok they get brittle.

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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 #79 of 92 (permalink) Old 07-06-2016, 07:41 PM
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the whole cover that holds the blower motor, needs to come out. there are a couple screws up top of that blower motor cover. You may need a long phillips screwdriver, to remove the left upper screw.
But your right lots of screws to remove, Plus its clipped on to the rear cover.
These clips may break but thats ok they get brittle.
How the f*** do you remove the black box on the side of the blower cover?? I found the one 10mm bolt but cannot find the second - its infuriating and last thing in the way
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post #80 of 92 (permalink) Old 07-06-2016, 07:48 PM Thread Starter
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How the f*** do you remove the black box on the side of the blower cover?? I found the one 10mm bolt but cannot find the second - its infuriating and last thing in the way
Ok, That little black box has 2. 7mm bolts on the inside. if you look behind it they are there.

You need to remove at least the bottom one and you should be able to swing it a bit out of the way.

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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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