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08-30-2025, 12:58 PM
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#1 |
      Drives: '17 Camaro 2SS & '99 Camaro Z28 Join Date: Feb 2014
Location: Austin, TX
Posts: 1,972
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HP-Tuners: Need help adjusting my shift points without nuking my engine tune...
I notice there are three modules in the vehicle that must be read:
1. E92A ECM – Engine Control Module 2. T87A TCM – Transmission Control Module 3. FSCM – Fuel System Control Module All three modules read and download but during the completion of the download of the FSCM module, I receive this error: It doesnt happen under the ECM or TCM modules, even if I stop it after each of those particular modules. I am concerned that if I modify my shift points, I may nuke my FSCM tune, if anything there is tuned. Can anyone confirm? I am concerned that if I modify my shift points, I may nuke my FSCM tune, if anything there is tuned. Can anyone confirm? I am really only wanting to change shift points and not make changes to the FSCM if anything there has even been changed (I'm not sure if it has.) Also is there anywhere I can get information of the stock shift points for touring, sport and track mode? My tuner basically tuned it so its upshifting way too soon even in sport mode. I am in 3rd gear at 5 mph. I've done tuning on shift points before but it was a more primitive PCM for a 99 Camaro I am new to the additional modules context. If anyone wants to take a look at the trans tune, the HPT file is here: https://drive.google.com/file/d/1mUu...ew?usp=sharing Last edited by Need4Camaro; 08-30-2025 at 01:15 PM. |
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08-31-2025, 05:01 PM
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#2 |
     
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 7,561
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You don't have to read the FSCM. Just select Do Not Read.
__________________
 2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel |
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11-20-2025, 01:33 PM
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#3 |
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Drives: '17 Camaro 2SS & '99 Camaro Z28 Join Date: Feb 2014
Location: Austin, TX
Posts: 1,972
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Does anyone happen to have a stock tune file for a 2017 Camaro SS containing all the shift points? I looked on HP-Tuners repository and they did have a stock SS tune but it did not contain the TCM sections with the shift points.
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11-20-2025, 02:25 PM
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#4 | |
Drives: 2017 2ss 6mt Join Date: Mar 2024
Location: dallas
Posts: 954
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Quote:
I would think shifting would be taking engine load and throttle position into consideration. Not just RPM |
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11-21-2025, 10:00 AM
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#5 |
 
Drives: 2019 ZL1 "1LE" | 16 SS | 2017 F30 Join Date: Dec 2021
Location: Europe
Posts: 109
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Every time you try to read the TCM tune it will give you a stock file for your vehicle.
@bishopts Shift points are based on vehicle speed.
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Callaway SC750 ZL1, DIY 1LE with added OEM 1LE Wheels, DSSV Suspension and 1LE Aero, FEA front control arms, DIY oil cooler, CWA 150 pump, bigger intercooler, BMR lockout kit, CTSV Brake Air Deflectors, Smooth idle cam, LS7 lifters, CHE trunnion bushings. Tuned by JRE
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11-21-2025, 01:42 PM
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#6 | ||
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Moderator
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 6,204
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Quote:
Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, ATI 8L90, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors & BB HPFP, TooHighPSI/Katech port injection, 15” conversion 1066 WHP STD/1027 SAE, 9.10@152.5 (new times coming)
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11-22-2025, 11:19 AM
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#7 |
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Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 7,561
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The ECU uses MPH as a primary point of reference for shifting.
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2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel |
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