P0068 Code after porting Throttle Body - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

lazerlemonta · 03-13-2017, 09:25 AM

HioSSilver ported the throttle body for me Saturday. Needless to say I spent some time getting the coast and idle squared back away (tiny clutch aggravates this issue a lot) Still need to work on getting it perfect but what a difference on initial tip in!

macSS · 03-13-2017, 10:02 AM

I had the same issue...my tuner went back and did some adjustments to I believe the A/F ratio and after a few start ups the computer learned the larger amount of air being ingested into the motor. Haven't had a problem since.

Bo White · 03-13-2017, 11:48 AM

You cut too much out.

lazerlemonta · 03-13-2017, 11:50 AM

Quote:

Originally Posted by Bo White

You cut too much out.

Stage 4 Bo lol looking for all that MPH on the big end. It did pick up 1 MPG on the trip home

Bo White · 03-13-2017, 11:57 AM

No doubt. Yeah the 3 main things that the ecu looks at are the MAF, MAP and TPS. The usual way to regulate the idle is with an IAC, idle air control valve. Since these TBs don't have these its built into the TB casing for the blade to move and control idle speed. Since you cut almost all of it out it now doesn't have very much to work with to control idle speeds. Welcome to my world almost 20 years ago. That's when manufactures starting getting away from IAC valves.

lazerlemonta · 03-13-2017, 12:01 PM

Quote:

Originally Posted by Bo White

No doubt. Yeah the 3 main things that the ecu looks at are the MAF, MAP and TPS. The usual way to regulate the idle is with an IAC, idle air control valve. Since these TBs don't have these its built into the TB casing for the blade to move and control idle speed. Since you cut almost all of it out it now doesn't have very much to work with to control idle speeds. Welcome to my world almost 20 years ago. That's when manufactures starting getting away from IAC valves.

What I did Bo was reduce the amount the blade was allowed to travel to 1.5% for 1.9x neuteral and 1.9% from 2.3x brake. Cold Start I had to make just slightly larger then a warm start. I need to tweak this a little but that's why I have HP Tuners lol was a long nite and morning Sunday lol

Bo White · 03-13-2017, 12:01 PM

Quote:

Originally Posted by macSS

I had the same issue...my tuner went back and did some adjustments to I believe the A/F ratio and after a few start ups the computer learned the larger amount of air being ingested into the motor. Haven't had a problem since.

Correct, my experience is with my stage II even after all my testing when I come out with that port about 1 in 10 need a touch up tune. My stage III is still under testing phases.

Bo White · 03-13-2017, 12:03 PM

Quote:

Originally Posted by lazerlemonta

What I did Bo was reduce the amount the blade was allowed to travel to 1.5% for 1.9x neuteral and 1.9% from 2.3x brake. Cold Start I had to make just slightly larger then a warm start. I need to tweak this a little but that's why I have HP Tuners lol was a long nite and morning Sunday lol

Yes you can tune a lot of it out if your good but the more you cut out the harder it will be to tune. There is a break over point were it cannot tune out because there's not enough there for the computer to use.

lazerlemonta · 03-13-2017, 12:10 PM

Quote:

Originally Posted by Bo White

Yes you can tune a lot of it out if your good but the more you cut out the harder it will be to tune. There is a break over point were it cannot tune out because there's not enough there for the computer to use.

I believe we found that line sir.

Batmanntexas · 03-13-2017, 12:11 PM

Quote:

Originally Posted by Bo White

You cut too much out.

Bo,

Are you referring to the two black lines in the top photo? Meaning that that area denoted by the two black lines should be left a little bit wider, to give the computer more room to work the idle trims?

Thanks,
Scott

Bo White · 03-13-2017, 12:35 PM

Correct.

HioSSilver · 03-13-2017, 12:48 PM

Yea we got pretty aggressive with it....looking to get all the stages we could. I'll probably leave a tad more in the next one. But lazerlemon is getting it sorted in the tune. So in the end it will be a win win i think.

WHAMMO · 03-14-2017, 10:06 AM

Quote:

Originally Posted by HioSSilver

Yea we got pretty aggressive with it....looking to get all the stages we could. I'll probably leave a tad more in the next one. But lazerlemon is getting it sorted in the tune. So in the end it will be a win win i think.

I believe mine is the next one! Pat G is doing all my tune by email with autocal, will it be fine?

Jon

lazerlemonta · 03-14-2017, 10:21 AM

Quote:

Originally Posted by WHAMMO

I believe mine is the next one! Pat G is doing all my tune by email with autocal, will it be fine?

Jon

He wont get that aggressive with yours lol We done the one for my 2012 and had zero issues.

03-13-2017, 09:25 AM	#1
lazerlemonta Drives: 2010 C6 1LT Join Date: Dec 2011 Location: Virginia Posts: 877 View My Garage	P0068 Code after porting Throttle Body HioSSilver ported the throttle body for me Saturday. Needless to say I spent some time getting the coast and idle squared back away (tiny clutch aggravates this issue a lot) Still need to work on getting it perfect but what a difference on initial tip in! Attached Images __________________ 2010 C6 JET STREAM BLUE BOLT ONS TO THE EXTREME, GPI 281cc HEADS, Darth_V8r SPEC CAM, FAST 102 INTAKE, CRANK SCRAPER, QUARTER MASTER 7.25" CLUTCH, RPM 3.90 STAGE II DIF, Z51 Gear Set AND E85 Best ET 10.58 @ 131.8 stock heads and stock cam 453/445 SAE 10.62@134.82 GPI 281CC Heads, SS4 Cam and X1 Intake Best 1/8 6.80@105.75 Best MPH 134.82

03-13-2017, 10:02 AM	#2
macSS Drives: 2012 SS Camaro LS3 Join Date: Jun 2012 Location: New Jersey Posts: 329	I had the same issue...my tuner went back and did some adjustments to I believe the A/F ratio and after a few start ups the computer learned the larger amount of air being ingested into the motor. Haven't had a problem since. __________________ 2012 Ashen Grey LS3_ARH 1 7/8 Long tubes_Pypes Exhaust Axle Back_C.A.I._ Bo White Ported Throttle Body_Custom Black Anodized Fuel Rails_3:91 Rear ARP Stainless Bolts_MSD Wires_Elite Engineering Catch Can_MGW Flat Stick_Stewart Warner Pro Gauges_BMR Rear Suspension_ZL1 Rear Swaybar 427 HP To The Wheels_Tuned and Dyno'd by ECS

03-13-2017, 11:48 AM	#3
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,021	You cut too much out.

03-13-2017, 11:57 AM	#5
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,021	No doubt. Yeah the 3 main things that the ecu looks at are the MAF, MAP and TPS. The usual way to regulate the idle is with an IAC, idle air control valve. Since these TBs don't have these its built into the TB casing for the blade to move and control idle speed. Since you cut almost all of it out it now doesn't have very much to work with to control idle speeds. Welcome to my world almost 20 years ago. That's when manufactures starting getting away from IAC valves.

03-13-2017, 12:35 PM	#11
Bo White Drives: 2015 Summit White 2SS 1LE Join Date: Feb 2012 Location: Vance Alabama Posts: 8,021	Correct.

03-13-2017, 12:48 PM	#12
HioSSilver Drives: 99 camaro ss with a bolt on ls6 Join Date: Feb 2017 Location: Winchester VA Posts: 44	Yea we got pretty aggressive with it....looking to get all the stages we could. I'll probably leave a tad more in the next one. But lazerlemon is getting it sorted in the tune. So in the end it will be a win win i think.