06-15-2017, 09:50 AM | #15 |
Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014
Location: Bridgewater
Posts: 693
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Attached below are the hptuners log (and also the exported excel version), and I attached some graphs from the excel file.
If you look at rpm vs time, you can see the rpm's fluctuating (I assume spark blow out or clutch slip). If you look at the MAF and A/F pic... it would appear as if the clutch is slipping causing loading/unloading of the motor which causes the MAF to be whacky which translates into A/F being whacky. Thoughts? |
06-15-2017, 09:55 AM | #16 |
Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014
Location: Bridgewater
Posts: 693
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Here are two screen shots of another run on the dyno where slip was much more visible. I circled rpm and mph in each pic.
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06-15-2017, 10:02 AM | #17 |
Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011
Location: Houston
Posts: 1,391
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Soooo what clutch do you have? I realize the clutch is not your main problem but dang that graph is hard to read (looks like a pick-up-stick pile).
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F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi
Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile |
06-15-2017, 10:05 AM | #18 |
Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014
Location: Bridgewater
Posts: 693
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06-15-2017, 10:30 AM | #19 |
Drives: 2010 Camaro (M6) 1000+ HP SBE Join Date: Jun 2011
Location: Houston
Posts: 1,391
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That should be a good clutch, at least the decal is cool!!
__________________
F-1X, Cog Drive, ATI Super Pulley/Sprag ~ 19 psi
Blower Cam Brodix BP BR 3 Heads Kooks LT Headers and full 3" exhaust Fore Triple Pump Fuel System with ID 1700X Injectors - E85 conversion DSS 9” Conversion (1400 hp axles, driveshaft, pumpkin) & Strange 3.70 gears McLeod RXT Twin HD Clutch & Upgraded Slave RPM Level VII TR6060 BMR Drag Suspension Package w/Strange shocks Carlyle 15" and M/T ET Street R radials 10.1 @ 143 mph 1/4 mile |
06-16-2017, 06:24 AM | #20 |
Drives: 1999 Trans Am Join Date: Jul 2009
Location: Bridgewater,Ma
Posts: 2,017
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You really just need to have the clutch work. A slipping clutch can screw up all power readings,tuning.
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06-16-2017, 06:50 AM | #21 |
Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014
Location: Bridgewater
Posts: 693
|
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06-21-2017, 08:57 PM | #22 |
Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014
Location: Bridgewater
Posts: 693
|
Pulled the plug wires and found 4 out of the 8 were cracked. So with new plugs/wires and if clutch will hold, I should be able to improve on the 817rwhp.
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07-06-2017, 09:49 PM | #23 |
Drives: 2010 Camaro 2SS M6 - Intake/Exhaust Join Date: Sep 2014
Location: Bridgewater
Posts: 693
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Some updates. I replaced four cracked plug wires and the BR7EF's @ .028" with new wires and Iridium NGK #8's @ .025.
A few things I noticed: 1) Speed vs time is now ulta smooth (at 10psi anyway) 2) MAF readings are now smooth (vs choppy before) 3) I am about 1.5 AFR leaner now han when on the dyno Pic 1 is speed vs time from the 817rwhp dyno pull (16psi) Pic 2 is speed vs time 10# street pull after plugs wires Pic 3 is MAF vs time from the 817rwhp dyno pull (16psi) Pic 4 is MAF vs time 10# street pull after plug and wires |
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