2017 Camaro SS 1LE Procharger D1SC question

TJay74 · 06-16-2018, 08:13 AM

Who all has a D1SC on their manual SS?

I got mine installed, car runs great so far. Only one slight complaint, I am getting a little surge at light throttle steady cruising state. Anyone else with a M6 seeing this with their D1SC.

The shop said they see this on the M6 cars, the A8 cars dont get it as much due to the converter. They said when they swap a Z06 over from the LT4 blower to a Procharger they run a different Surge (BOV) valve to keep from having the issue on those cars.

We both agree that it is some sort of torque management causing the issue.

Anyone else have any suggestions or has been able to adjust for this?

Thanks in advance... Todd

KingLT1 · 06-16-2018, 08:16 AM

I have read others have the same issue...it's tuning related for sure.

oldman · 06-16-2018, 09:43 AM

I have the PS1, very similar, mine is a M6, runs fine, I agree with KingLT, must be a tune issue. I'm on the standard pulley 4.1" ? I think.

DenverTaco07 · 06-16-2018, 10:03 AM

r u running AC when this happens?

TJay74 · 06-16-2018, 10:58 AM

Doesnt matter if AC is running or not, same for leaving TC on.

Kstallard34 · 06-17-2018, 07:21 PM

Haven’t noticed it yet. I have a 17 SS 1LE with a D-1SC. Put only around 500 Miles are so on it however.

oldman · 06-17-2018, 09:24 PM

there is a slight idle float when going from driving to neutral, but I do have a cam too. But no surge in gear / part throttle.

TJay74 · 06-19-2018, 10:03 AM

Quote:

Originally Posted by oldman

there is a slight idle float when going from driving to neutral, but I do have a cam too. But no surge in gear / part throttle.

Are you running a 3 bar map sensor, did you break out the sensor from the MAF harness?

oldman · 06-19-2018, 10:12 AM

nope but with my new D1X, I'll probably will.

TJay74 · 06-20-2018, 10:41 AM

Eureka...!!! I found the culprit today.

Well after talking to a friend this morning who had the same issues on his car which is the same car as mine with almost the same mods we think we found the culprit and the reason. We both have a custom ported throttle body on our cars. I spoke with Procharger yesterday and they said the BOV is causing the surging issue due to the standard BOv is only 1.5" and the Race BOV is 2". They said the car is seeing BOV surge that is making it past the BOV and into the intake because I am over the limit for what the standard BOV is designed to handle.

This is where the TB is fitting into the equation. Not only is the TB ported, the TB blade arm was thinned down as well. When I am at steady state cruise the TB blade is partially open, when the surge of air hits the throttle blade the air changes the TB angle and the ECM freaks out as it isnt expecting the TB angle to change and in turn it is adding timing advance to control the expected torque change. This explains why it only happens at part throttle steady state cruise as the blade is only partially open.

Moderate throttle all the way up to going WOT doesnt affect it as the blade is fully open and level in the airstream so the blade angle isnt changing.

When I get home later I am gonna change back over to my stock OEM TB and see how the car does.

PRAY · 06-20-2018, 10:52 AM

So the BOV surging pressure won't effect the stock TB? Seems that the surge on the TB blade will be the same until it is corrected.

PRAY · 06-20-2018, 10:54 AM

Quote:

Originally Posted by oldman

there is a slight idle float when going from driving to neutral, but I do have a cam too. But no surge in gear / part throttle.

I will have to pull a little out of your DD tables at the 0 pedal position if you get a little float between gears.

oldman · 06-20-2018, 11:13 AM

Pray it is so slight, I don't notice really and I have the 103mm TB and MSD intake. Oh, I did not tell you I went crazy and purchased a D1X with 4.5 pulley it will have the same boost as the P1SC but when I drop in the forged engine I can do some fun pulley like 3.85.... I did not want you all to pick on my "small" head unit... LOL.

PRAY · 06-20-2018, 11:14 AM

Quote:

Originally Posted by oldman

Pray it is so slight, I don't notice really and I have the 103mm TB and MSD intake. Oh, I did not tell you I went crazy and purchased a D1X with 4.5 pulley it will have the same boost as the P1SC but when I drop in the forged engine I can do some fun pulley like 3.85.... I did not want you all to pick on my "small" head unit... LOL.

You're out of control.

06-16-2018, 08:13 AM	#1
TJay74 Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016 Location: Norman, OK Posts: 2,424	2017 Camaro SS 1LE Procharger D1SC question Who all has a D1SC on their manual SS? I got mine installed, car runs great so far. Only one slight complaint, I am getting a little surge at light throttle steady cruising state. Anyone else with a M6 seeing this with their D1SC. The shop said they see this on the M6 cars, the A8 cars dont get it as much due to the converter. They said when they swap a Z06 over from the LT4 blower to a Procharger they run a different Surge (BOV) valve to keep from having the issue on those cars. We both agree that it is some sort of torque management causing the issue. Anyone else have any suggestions or has been able to adjust for this? Thanks in advance... Todd

06-16-2018, 08:16 AM	#2
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,793	I have read others have the same issue...it's tuning related for sure. __________________ 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

06-16-2018, 09:43 AM	#3
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,316	I have the PS1, very similar, mine is a M6, runs fine, I agree with KingLT, must be a tune issue. I'm on the standard pulley 4.1" ? I think. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

06-16-2018, 10:03 AM	#4
DenverTaco07 Drives: 2017 SS 1LE, 2017 Volt, 2013 Pilot Join Date: May 2014 Location: Colorado Posts: 4,274	r u running AC when this happens? __________________ 2017 SS 1LE \| HBM \| Vortech V3-Si supercharger (620RWHP and 575ft lbs) \| PDR \| Black Bowties \| Illuminated Front Black Bowtie \| Illuminated Door Sills \| Smoked Tails \| vented seats mod

06-17-2018, 09:24 PM	#7
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,316	there is a slight idle float when going from driving to neutral, but I do have a cam too. But no surge in gear / part throttle. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

06-16-2018, 10:58 AM	#5
TJay74 Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016 Location: Norman, OK Posts: 2,424	Doesnt matter if AC is running or not, same for leaving TC on.

06-17-2018, 07:21 PM	#6
Kstallard34 Drives: 2017 Camaro SS 1LE Join Date: Sep 2017 Location: Wadsworth Ohio Posts: 58	Haven’t noticed it yet. I have a 17 SS 1LE with a D-1SC. Put only around 500 Miles are so on it however.

06-19-2018, 10:12 AM	#9
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,316	nope but with my new D1X, I'll probably will. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

06-20-2018, 10:41 AM	#10
TJay74 Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016 Location: Norman, OK Posts: 2,424	Eureka...!!! I found the culprit today. Well after talking to a friend this morning who had the same issues on his car which is the same car as mine with almost the same mods we think we found the culprit and the reason. We both have a custom ported throttle body on our cars. I spoke with Procharger yesterday and they said the BOV is causing the surging issue due to the standard BOv is only 1.5" and the Race BOV is 2". They said the car is seeing BOV surge that is making it past the BOV and into the intake because I am over the limit for what the standard BOV is designed to handle. This is where the TB is fitting into the equation. Not only is the TB ported, the TB blade arm was thinned down as well. When I am at steady state cruise the TB blade is partially open, when the surge of air hits the throttle blade the air changes the TB angle and the ECM freaks out as it isnt expecting the TB angle to change and in turn it is adding timing advance to control the expected torque change. This explains why it only happens at part throttle steady state cruise as the blade is only partially open. Moderate throttle all the way up to going WOT doesnt affect it as the blade is fully open and level in the airstream so the blade angle isnt changing. When I get home later I am gonna change back over to my stock OEM TB and see how the car does.

06-20-2018, 10:52 AM	#11
PRAY Drives: 2016 2SS Join Date: Jul 2016 Location: Sanford NC Posts: 2,766	So the BOV surging pressure won't effect the stock TB? Seems that the surge on the TB blade will be the same until it is corrected.

06-20-2018, 11:13 AM	#13
oldman Drives: SS 6 speed of course Join Date: Jan 2016 Location: Hilo, HI Posts: 4,316	Pray it is so slight, I don't notice really and I have the 103mm TB and MSD intake. Oh, I did not tell you I went crazy and purchased a D1X with 4.5 pulley it will have the same boost as the P1SC but when I drop in the forged engine I can do some fun pulley like 3.85.... I did not want you all to pick on my "small" head unit... LOL. __________________ Forged short block, large duration sub .600 lift Cam Motion cam, 7200 RPM fuel cut, Pray Ported Heads, 3.85 pulley D1X, stage II intercooler, DSX secondary low side, DSX E85 sensor, Lingenfelter big bore 2.0 pump, ported front cats, 60608 Borla, LT4 injectors, ZL1 1LE driveshaft and Katech ported TB, ported MSD intake, BTR valvetrain, ARP studs, ProFlow valves, PS4 tires.

User Name		Remember Me?
Password