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post #16 of 24 (permalink) Old 01-29-2019, 02:08 PM
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My assumption has been that you have to buy the kit from a dealer in order to get the activation code after which the calibration file is made available, but I have nothing to base that on.

Word is that the Trifecta is a better tune with more power and flexibility.

John
Lexington, KY
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked
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post #17 of 24 (permalink) Old 01-29-2019, 02:39 PM
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On further thought, I wonder if it is added to the file for your VIN when you submit the certificate number to a dealer. After that it is part of the default data. That way it would not show up as a separate entity.

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Lexington, KY
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked
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post #18 of 24 (permalink) Old 01-30-2019, 10:44 AM
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I'm going to call Trifecta to verify that I always have the ability to use Tech2+Tis2Web to reflash to an OEM image if needed someday. If they say that's the case, I'll go with Trifecta.

2008 Redline powered by a zero point module
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post #19 of 24 (permalink) Old 01-30-2019, 04:47 PM
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I spoke with GM Aftermarket Performance and, yes, they told me I need to buy the upgrade kit. Then, I call them with the authorization number. They'll add the calibration part number to what's visible to me on my Tis2web subscription. From there I can select it and program the ECU.

So, back to being $500+ for the calibration. Though it'll be selectable under my VIN in Tis2web indefinitely

I'm getting some details hammered out with Trifecta now and will go that route.

2008 Redline powered by a zero point module
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post #20 of 24 (permalink) Old 02-01-2019, 09:43 PM
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This is related and I can't find a tread specifically on it so I figured I'd ask here.

One of my metal valve stems is fractured about half way down the shaft from the mouth. Probably a defect in the casting that gave over time. Tightening the schrader valve inside the tube pushes the portion above the fracture away from the bottom half. So, can't get enough torque on the valve to get it to seat fully. Got a slow leak. Fracture is about 1/3rd of the circumference of the shaft.

I need to replace the stem-sensor assembly. I'd like to get the same part number because if I don't change its mass I can swap it at home and without a rebalance. Just deflate, crack the bead seal, push down on the sidewall where the stem is, and change it. I've seen it done before. Any reason it can't be done on our cars?

I looked up the part on gmpartsnow.com
https://www.gmpartsnow.com/oem-parts...nitor-20925924

So the car isn't sitting on a flat I coated the outer threads with JB Weld after removing the valve. Once it hardens this should allow me to insert the valve with enough torque to seal it w/o pushing the upper half of the shaft away again. Should even be OK to drive but I'll try to avoid that.

2008 Redline powered by a zero point module

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post #21 of 24 (permalink) Old 02-02-2019, 11:41 AM
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If you can break the bead, our wheels aren't different from anyone else's, really, but the the low profile tire will not break easily.

There is no way I would even attempt to drive on it.

I personally don't think it is worth the aggravation to try to break the bead yourself. I would take the sensor and the wheel to a tire shop and let them do it, then check the balance.
44thSKY, ZPM and Amorget like this.

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Lexington, KY
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked

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post #22 of 24 (permalink) Old 02-04-2019, 02:46 PM
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I dropped the wheel and new sensor assembly off at a top-notch local speedshop today. I'll get it back today.

I tried but you were right, that bead is tough! ha ha

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Originally Posted by JohnWR View Post
If you can break the bead, our wheels are different from anyone else's, really, but the the low profile tire will not break easily.

There is no way I would even attempt to drive on it.

I personally don't think it is worth the aggravation to try to break the bead yourself. I would take the sensor and the wheel to a tire shop and let them do it, then check the balance.

2008 Redline powered by a zero point module
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post #23 of 24 (permalink) Old 02-04-2019, 03:41 PM
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I once mounted a set of tires on my MGB using a manual bead breaker and a set of tire irons because the wheels were wire knock-offs and there was no one in town that I though I could trust with them. Those tires were 165/80-14 and I swore then that I would never try it again.

John
Lexington, KY
Sky NA 2007 Midnight Blue
Sky RL 2008 Carbon Flash - Naked
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post #24 of 24 (permalink) Old 02-05-2019, 12:15 AM
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I tried on a set of truck tires off of a S10, not low profile or anything, but I could not get the bead to break... that included driving a Nissan Hardbody pickup on them.
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