05-03-2019, 09:13 PM | #15 |
Tactical Garage
Drives: 2016 Camaro 2SS Join Date: Nov 2016
Location: Idaho
Posts: 427
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Drsag, I am sitting right about where you were at, 11psi boost, E55 and seeing a low of 41psi on my lowside fuel pressure during a 1/4 mile run. KingLt1 has me thinking about adding a BAP.
I am curious what you were seeing in your Highside fuel pressure and pulse width at 43 psi and what if any improvements you saw in either of these after adding the BAP. |
05-03-2019, 09:30 PM | #16 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,797
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I was playing around with E mixtures today. I mixed 7 gallon of E85 with 3 gallons of E20(the pumps are side by side and E20 was only 2.55 a gal.) and ended up around E65. Injectors we're in the mid 5's, rail pressure was 28-3000psi, low side 70-75psi, 20-21 degrees timing. LT4 injectors, LPE DI pump, ZL1 in-tank with JMS, @ 9 psi. I could easily pulley down on this mixture.
Rob, one thing you can try if you have not yet is bump up your fuel pump voltage in the FSCM. Stock is like 14.7, move it up to 15.5. I bumped mine up as a fail safe just in case the JMS was ever to fail. I have seen guys set the table upwards of 16.5 volts.
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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
05-03-2019, 09:57 PM | #17 |
Tactical Garage
Drives: 2016 Camaro 2SS Join Date: Nov 2016
Location: Idaho
Posts: 427
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Joe, thanks I was just reading that and updated my tune to the 15.5 voltage, I will test it out tomorrow.
Most of my 10.44 1/4 mile run lowside was 45 to 46 psi, it temporarily drops to 41psi at the shift points when rpms drop. Pulse width was 5.2 to 5.3, it ticked to 5.4 for a split second. High side was 2,800 to 3,000 most of the run but again temporarily drops to 2,650 on the shifts as rpms drop. I dont think the drops would be picked up on the dyno as it only drops on the shift then builds back up as rpms increase. I am interested to see with the higher voltage if it will get rid of the drops I am seeing on the shifts. When I drop pulleys and increased the boost I went from 9psi to 11psi, I decreased the timing, so I am current at 18 on timing. Keep in mind I am also spraying windshield wiper fuild. |
05-04-2019, 05:07 PM | #18 | |
Drives: 2017 Camaro 2SS Nightfall Gray vert Join Date: Jan 2018
Location: Swansea, IL
Posts: 1,219
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Quote:
@9psi Before the BAP E60 fuel pressure was dropping from 70psi to 42psi. Fuel rail pressure 2800-3000 Pulse width 5.8-5.9 Once we saw the Low pressure falling off at 9psi I added the BAP: 715whp @9psi after BAP E60 Fuel pressure 70psi start to finish Fuel rail pressure 2800-3000 Pulse width 5.7-5.9 800whp @12 psi After BAP E70 Fuel pressure 70psi start to finish Fuel rail pressure 2800-3000 Pulse width was 6.2-6.6 After the 800whp pull, E dropped for winter mix so my final pull was the 776whp on e60. I didn’t get to make a quarter mile pass last year. I actually have dialed back to 10-11psi now and am planning to drop back to 8psi tomorrow. Until I get better tires there is simply no point in running 800whp.
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2017 Camaro 2SS vert - Nightfall Gray
Magnuson Heartbeat SC - Tuned by JRE Racing 776whp/745wtq (12psi) 2018 Corvette Z06 vert- Black To be tuned by JRE Racing TBD performance |
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05-04-2019, 09:21 PM | #19 |
Tactical Garage
Drives: 2016 Camaro 2SS Join Date: Nov 2016
Location: Idaho
Posts: 427
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Thanks. It seems even at 42psi it was enough to support the high side and pulse width for you at 9psi. But the BAP gave you the additional low side as you added boost. Not sure I need it now but will probably do it to support the pistons and cams that I will be doing next winter.
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05-04-2019, 09:57 PM | #20 | |
Drives: 2017 Camaro 2SS A8 Join Date: Aug 2018
Location: Petersham MA
Posts: 4,749
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Quote:
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2017 Chevy Camaro 2SS A8 Whipple 3.0, Mast Black Label heads, Fore triple in-tank pumps, 112mm TB, LPE +52% injectors, LPE BB HPFP, 15” conversion 1059 WHP/944 WTQ, 9.48@150
Last edited by Joshinator99; 05-05-2019 at 06:44 AM. |
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05-04-2019, 10:41 PM | #21 | |
Drives: 2017 Camaro 2SS Nightfall Gray vert Join Date: Jan 2018
Location: Swansea, IL
Posts: 1,219
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Quote:
__________________
2017 Camaro 2SS vert - Nightfall Gray
Magnuson Heartbeat SC - Tuned by JRE Racing 776whp/745wtq (12psi) 2018 Corvette Z06 vert- Black To be tuned by JRE Racing TBD performance |
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05-04-2019, 10:45 PM | #22 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,797
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I bumped the Fuel Pump Voltage via the FSCM on my brothers C7Z today and low side pressure went from 55 to holding 75psi. The pic I posted earlier was the tune for his car . We are going to hook up a Flex sensor and see how much E it will take. This car has a Kong ported charger, upper pulley, cordes 5" intake, ported LT5 tb, catless borla x, with Billy boat axle back.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
05-05-2019, 12:49 AM | #23 | |
Drives: 2017 Camaro 2SS Nightfall Gray vert Join Date: Jan 2018
Location: Swansea, IL
Posts: 1,219
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Quote:
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2017 Camaro 2SS vert - Nightfall Gray
Magnuson Heartbeat SC - Tuned by JRE Racing 776whp/745wtq (12psi) 2018 Corvette Z06 vert- Black To be tuned by JRE Racing TBD performance Last edited by Drsagacity; 05-05-2019 at 05:10 PM. |
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05-05-2019, 05:52 AM | #24 |
Drives: 17 ZL1 Join Date: Mar 2017
Location: VA
Posts: 1,075
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2017 ZL1 Coupe M6, Red Hot
Mods; AFE Pro 5R CAI, Kong Ported Blower and Snout, NW 103 TB, Griptech 2.31 Upper, Kooks 2",JMS Voltage Booster, Flex Fuel, Mighty Mouse CC,Jannetty Racing Tune, 680 rwhp |
05-05-2019, 10:29 AM | #25 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,797
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Quote:
Also you might need to change those switches highlighted in red(refer to the pic) if you have voltage/fuel pressure fluctuations due to the variable rate charging system. changing those will keep the voltage to the FSCM more consistent. Factory is set to 11.6v minimum, I bumped my Camaro and the Vette to 12.5, maximum voltage is 14.0, but you can do 14.6. Credit to BlueCamaro6!!
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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05-05-2019, 05:00 PM | #26 | |
Drives: 2017 Camaro 2SS Nightfall Gray vert Join Date: Jan 2018
Location: Swansea, IL
Posts: 1,219
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Quote:
Still, I like this for my other car as I won’t be pushing it nearly as hard. Wicked SS and Wicked C7
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2017 Camaro 2SS vert - Nightfall Gray
Magnuson Heartbeat SC - Tuned by JRE Racing 776whp/745wtq (12psi) 2018 Corvette Z06 vert- Black To be tuned by JRE Racing TBD performance Last edited by Drsagacity; 05-05-2019 at 05:17 PM. |
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05-05-2019, 08:56 PM | #27 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,797
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Nice....I believe you can go higher then 15.5. that table will allow you to add up to 32 volts. I know Parish had his at 16.5volts. The BAP may still hold an advantage either way.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
05-05-2019, 10:02 PM | #28 | |
Drives: 2016 Corvette Z06 3LZ Join Date: Oct 2018
Location: Massachusetts
Posts: 35
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Quote:
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16 Oynx Black Corvette Z06 3LZ
17 Oynx Black Sierra Denali HD - 6.6 Duramax HD 20 Dodge Durango 20 Cadillac XT6 |
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