MPVI2 Scan showing 83.9% TPS WOT

floridanick · 09-10-2019, 08:38 PM

Just plugged my HPtuners in and doing a test scan noticed in my WOT pulls its only showing 83.9% throttle position?

Its a 19 camaro 2SS with a ported throttle body, cai & axle back AWE track exhaust.

Not sure if thats normal or should be seeing 100%, I was in sport with traction off and competitive stabilitrack mode on.

Have alot to learn from my days of OBD1 95 LT1 engines but excited to begin.

TMS · 09-10-2019, 09:32 PM

That is normal. Should not go past 84%.

arpad_m · 09-10-2019, 11:21 PM

This is what I see as well. Pedal position is the "Commanded Throttle Actuator (SAE)" value. Yes, my IAT sucks, hopefully the car will be fixed soon.

floridanick · 09-11-2019, 05:14 AM

Thanks!

Joshinator99 · 09-11-2019, 05:15 AM

Quote:

Originally Posted by arpad_m

This is what I see as well. Pedal position is the "Commanded Throttle Actuator (SAE)" value. Yes, my IAT sucks, hopefully the car will be fixed soon.

That IAT is fine, but .90 lambda is on the lean side IMO.

6spdhyperblue · 09-11-2019, 05:36 AM

Quote:

Originally Posted by Joshinator99

That IAT is fine, but .90 lambda is on the lean side IMO.

He’s NA

wnta1ss · 09-11-2019, 06:17 AM

Quote:

Originally Posted by arpad_m

This is what I see as well. Pedal position is the "Commanded Throttle Actuator (SAE)" value.

Actually, the 'Commanded Throttle Actuator (SAE)' seems to be the drive-by-wire throttle and I use it for scanning throttle position. The accelerator pedal is on a different channel. The one that I use for the accelerator pedal is 'Accelerator Pedal Position' which is ECM>Engine>Accelerator & Throttle>Accelerator Pedal>Accelerator Pedal Position. Mine at WOT shows 100% for commanded and 99% for accelerator.

Joshinator99 · 09-11-2019, 07:26 AM

Quote:

Originally Posted by 6spdhyperblue

He’s NA

Arpad's sig says he has a Maggie...

6spdhyperblue · 09-11-2019, 08:18 AM

Ah thx

KingLT1 · 09-11-2019, 09:27 AM

Quote:

Originally Posted by Joshinator99

That IAT is fine, but .90 lambda is on the lean side IMO.

He isn't commanding .90 lambda... you must be looking at his o2 voltage.

His commanded EQ ratio is .819.

I agree his IAT is fine. PD cars show a higher number due to the placement if the IAT sensor. IAT isn't a issue unless it's getting up into the range where it's programmed to pull timing. That doesn't happen on my car until 154 degrees. I have yet to see timing pull from IAT's on my car even in 90+ degree weather. It shouldn't be a issue on a setup under 10 psi.

arpad_m · 09-11-2019, 12:05 PM

Quote:

Originally Posted by KingLT1

He isn't commanding .90 lambda... you must be looking at his o2 voltage.

His commanded EQ ratio is .819.

I agree his IAT is fine. PD cars show a higher number due to the placement if the IAT sensor. IAT isn't a issue unless it's getting up into the range where it's programmed to pull timing. That doesn't happen on my car until 154 degrees. I have yet to see timing pull from IAT's on my car even in 90+ degree weather. It shouldn't be a issue on a setup under 10 psi.

^ This.

Yes, my car is indeed FI. The tune is Ted Jannetty's and the commanded lambda in power enrichment mode is 0.8196. Boost is 7.6 psi if I'm not mistaken (Intake Manifold Absolute Pressure [SAE] 21.5 psi - Barometric Pressure [SAE] 13.9 psi, latter not shown in the screenshot---happy to be corrected by someone who actually knows this stuff

).

OP sorry I didn't mean to hijack the thread. The throttle position value you see looks normal.

floridanick · 09-11-2019, 12:16 PM

no worries, I appreciate the insight from everyone.

09-10-2019, 08:38 PM	#1
floridanick Drives: Chevrolet Camaro 2SS Join Date: Jul 2019 Location: FL Posts: 139	MPVI2 Scan showing 83.9% TPS WOT Just plugged my HPtuners in and doing a test scan noticed in my WOT pulls its only showing 83.9% throttle position? Its a 19 camaro 2SS with a ported throttle body, cai & axle back AWE track exhaust. Not sure if thats normal or should be seeing 100%, I was in sport with traction off and competitive stabilitrack mode on. Have alot to learn from my days of OBD1 95 LT1 engines but excited to begin.

09-10-2019, 09:32 PM	#2
TMS Drives: 2018 ZL1 1LE - HBM, PDR Join Date: Jun 2017 Location: Rescue, CA Posts: 324	That is normal. Should not go past 84%. __________________ JRE Tuned (HPTuners) \| 15% OD (9.17" crank pulley) \| TVS2300 Maggie Heartbeat Supercharger - 14 psi \| E-50 (DSX Flex Fuel kit) \| JMS FuelMax Fuel Pump Booster \| LPE Big Bore High Volume DI fuel pump \| LPE High Flow DI fuel injectors \| LT5 95mm TB \| RotoFab CAI \| AEM X-Series OBD2 wide band gauge \| Elite Engineering E2-X catch can \| Borla S-type NPP Cat-Back 3" exhaust \| Forgeline GTD1 5-lug Satin Graphite \| SunTek wrap \| C-Quartz Finest Reserve ceramic coated

09-10-2019, 11:21 PM	#3
arpad_m Drives: 2018 Camaro 2SS A8 Join Date: Jul 2017 Location: East Tennessee Posts: 11,576 View My Garage	This is what I see as well. Pedal position is the "Commanded Throttle Actuator (SAE)" value. Yes, my IAT sucks, hopefully the car will be fixed soon. Attached Images __________________ 2018 Camaro 2SS — G7E MX0 NPP F55 IO6 735 rwhp \| 665 rwtq Magnuson TVS 2300 80mm pulley \| Kooks 1 7/8" LT headers \| JRE smooth idle terminator cam \| LT4 FS & injectors \| TSP forged pistons & rods JMS PowerMAX \| DSX flex fuel kit \| Roto-Fab CAI \| Soler 95mm LT5 TB \| 1LE wheels \| 1LE brakes \| BMR rear cradle lockout \| JRE custom tune 1100 - 1/30/18 \| 2000 - 1/31/18 3000 - 2/06/18 TPW 2/26/18 3400 - 2/19/18 \| 3800 - 2/26/18 4300 - 2/27/18 \| 4B00 - 3/01/18 4200 - 3/05/18 \| 4800 - 3/14/18 5000 - 3/16/18 \| 6000 - 3/19/18

09-11-2019, 05:14 AM	#4
floridanick Drives: Chevrolet Camaro 2SS Join Date: Jul 2019 Location: FL Posts: 139	Thanks!

09-11-2019, 08:18 AM	#9
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,670	Ah thx

09-11-2019, 12:16 PM	#12
floridanick Drives: Chevrolet Camaro 2SS Join Date: Jul 2019 Location: FL Posts: 139	no worries, I appreciate the insight from everyone.

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