85% max on TPS on data log? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

davidscamaro · 06-15-2017, 11:46 AM

Is it normal for the wide open throttle percentages to max at 85%.

Was looking at my last data log with efi live and it was only max open at 85% even tho the gas pedal was full depressed for most of the log

CamaroFred · 06-15-2017, 02:16 PM

If you ever see 0% or 100% then you should be worried.

From what I have read normal is 10-90%.
What does yours read with a closed throttle?

DvKillar · 06-15-2017, 04:19 PM

Quote:

Originally Posted by CamaroFred

If you ever see 0% or 100% then you should be worried.

From what I have read normal is 10-90%.
What does yours read with a closed throttle?

yup. the butterfly valve cannot possibly hit 100% due to the way it is chamfered in the TB. at least my V8 5.3l was that way.

davidscamaro · 06-15-2017, 04:24 PM

Quote:

Originally Posted by CamaroFred

If you ever see 0% or 100% then you should be worried.

From what I have read normal is 10-90%.
What does yours read with a closed throttle?

I'm not sure what the tps reads with no pedal input, I'll have to check later

I did some reading too and it seems that the 85% to 89% is what most see as well at wot on the tps %

davidscamaro · 06-15-2017, 04:26 PM

Quote:

Originally Posted by DvKillar

yup. the butterfly valve cannot possibly hit 100% due to the way it is chamfered in the TB. at least my V8 5.3l was that way.

Thanks, I'm pretty sure that's what going on and all is good

gringo · 06-16-2017, 02:26 AM

Quote:

Originally Posted by DvKillar

yup. the butterfly valve cannot possibly hit 100% due to the way it is chamfered in the TB. at least my V8 5.3l was that way.

Don't forget us V6'ers will not get WOT until 4K rpms. Not even a tune will change that.

CamaroFred · 06-16-2017, 04:22 AM

Quote:

Originally Posted by gringo

Don't forget us V6'ers will not get WOT until 4K rpms. Not even a tune will change that.

Don't forget that back in the '70s/'80s when the Quadrajet had vacuum controlled secondaries you could change to a lighter spring and obtain total bog at low RPMs.

DvKillar · 06-16-2017, 08:25 AM

Quote:

Originally Posted by gringo

Don't forget us V6'ers will not get WOT until 4K rpms. Not even a tune will change that.

why is that?

WoodBoss · 06-16-2017, 08:36 AM

I just did a WOT run & data log yesterday Absolute Throttle % range min was 15.29% at Idle and it maxed out at 84.7% at WOT. I sent the Data Log to DynoSteve to tweak my tune some.

davidscamaro · 06-16-2017, 09:53 AM

Quote:

Originally Posted by WoodBoss

I just did a WOT run & data log yesterday Absolute Throttle % range min was 15.29% at Idle and it maxed out at 84.7% at WOT. I sent the Data Log to DynoSteve to tweak my tune some.

Sweet , wish I had dynosteve to tweak mine

06-15-2017, 11:46 AM	#1
davidscamaro Drives: 2010 SS/RS M6 BIG cam Join Date: Mar 2016 Location: McDonald's DT Posts: 857	85% max on TPS on data log? Is it normal for the wide open throttle percentages to max at 85%. Was looking at my last data log with efi live and it was only max open at 85% even tho the gas pedal was full depressed for most of the log __________________ BIG cam ...... 305 45 18 Mickys ...... BMR suspensions

06-15-2017, 02:16 PM	#2
CamaroFred Drives: Miss Con Ception Join Date: Aug 2016 Location: Chicagoland Posts: 2,998	If you ever see 0% or 100% then you should be worried. From what I have read normal is 10-90%. What does yours read with a closed throttle? __________________ 2011 1SS/RS LS3 CGM

06-16-2017, 08:36 AM	#9
WoodBoss "Old School" Drives: 2010 2SS L99 Join Date: Apr 2015 Location: Sherrills Ford, NC Posts: 1,295	I just did a WOT run & data log yesterday Absolute Throttle % range min was 15.29% at Idle and it maxed out at 84.7% at WOT. I sent the Data Log to DynoSteve to tweak my tune some.