What do you think happened? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

Kens ss · 06-16-2017, 07:23 PM

Okay so a couple months ago installed Kooks headers with hi flow cats, already had CAI cold air intake, Then got a remote tune. The day I did the tune. The car was wicked fast and throttle RESPONCE was incredible!
However, today finally took my boss for a ride, after telling him repeatedly that my car could hold up against his '15 mustang 5.0... On three separate opportunities to mash the pedal from a dead stop, the throttle RESPONCE was extremely disappointing. It acted as follows: stopped, turned off both nannies, mashed the pedal to the floor, tires did not even break loose, seemed to take time to get to full power, (not a cough or surge, but like it was slow to realize what I was doing) it took a second or three of before she woke up and went full throttle. Almost like the engine said, sorry didn't realize you were going to do that, but I see you are at full throttle, okay boys lets get her moving!
Only about 200 miles since, install of headers, cats and tune and always run Shell 93 octane.
Thoughts???
Can I download any data and send to the tuner, to diagnose and to make sure setting are still correct?

nickiscoolerthancool · 06-16-2017, 07:37 PM

Did you put it in track mode?

Kens ss · 06-16-2017, 07:42 PM

Quote:

Originally Posted by nickiscoolerthancool

Did you put it in track mode?

2011 l99, no track mode option, just tuned off traction control and stabilitrack . By holding traction button 7 seconds as I do anytime I want to play. Both lights were displayed as being turned off. To clarify it was like a built up to full power, rather then NOW!

nickiscoolerthancool · 06-16-2017, 07:47 PM

Should have lost traction if you mashed on it, contact tuner!

Kens ss · 06-16-2017, 08:02 PM

Is it possible something in the valve train would act like this? Valve springs, push rods? The car still sounds healthy, and when she eventually decides to Reach full throttle, runs fast and heathy too.
Just a steady build up to full powere taking a second or three? Although she did not break tires free at a dead stop, the shift to second did beak them loose.

QUICRNU · 06-16-2017, 09:41 PM

I thought cats at first....but if it was ok in higher rpm that wouldnt make sense, only takes few minutes to check them though.
It is strange it changed, meaning it was better 200miles ago than now.

If it was tractio control nannies you can try to ABS fuses pull to eliminate that.

More likely in tuning than valvetrain.....does it have a miss at all? Loose plug wire etc?

Jrichards73 · 06-16-2017, 09:41 PM

Drivetrain wouldn't do that. I've had that happen when the car is stone cold, like its protecting itself because the oil isn't hot enough to flow everywhere yet. After the cam I always let her idle to 150 coolant temp and the oil temp gauge is starting to move. The car runs on a 5v reference, so all the sensors need to be in agreement for it to give full power. So if one of the +5 is off (accelerator pedal or Throttle body) the ECU says no Bueno. I suspect that's the stone cold issue as well, oil temp is too low, so the Ecu is holding back. If you have a scan tool with live view you should be able to see what your throttle pedal is doing and what the TB is giving you in return. Your car is the same age as mine and I just had to replace the TB because the internal resistors wore out and when it added the rising 0v to +5v to the dropping +5 to 0v it was coming up with more than +5v and I got a no bueno. I did the Accelerator pedal at the same time because they were the same age, just as a CYA. If you record live data and send it to the tuner he should be able to see all those parameters as well.

Kens ss · 06-16-2017, 10:31 PM

Thank you for the replies...

No miss or rough idle condition.

Was warmed and drivin nearly 5 miles before I tried the launches. Was near 90 degrees outside, so warmer than when I first got the tune by perhaps 20 degrees, but that should not cause such a response.

Dyno Steve suggested I check the plugs anyway and maybe even reload the tune. I will investigate and test more this weekend.
Come to think of it, there was a few times since the tune where, I thought I smelled raw gas while driving, found no leaks, but maybe running too rich. I should see evidence when I check the plugs, I would think?

gsxrturbo · 06-17-2017, 11:16 AM

I would do the fuse pull to reset your timing table

qcman · 06-17-2017, 02:48 PM

I notice the headers are fairly new when they were installed were the spark plugs removed during the install? I've read a lot of issues here with plugs being cracked during a header install so thought I would mention that.

Kens ss · 06-17-2017, 04:58 PM

Quote:

Originally Posted by qcman

I notice the headers are fairly new when they were installed were the spark plugs removed during the install? I've read a lot of issues here with plugs being cracked during a header install so thought I would mention that.

Yes plugs were removed for header install. I ended up short on time to trouble shoot today, maybe tomorrow..

Avenging Orange · 06-18-2017, 09:02 AM

Have you tried to launch since then? Just thinking outside the box here.....high heat/humidity + added weight of the passenger............

Kens ss · 06-18-2017, 10:54 AM

Quote:

Originally Posted by Avenging Orange

Have you tried to launch since then? Just thinking outside the box here.....high heat/humidity + added weight of the passenger............

Funny, you should mention that. Just took her out one more time before I started trouble shooting. Same result delay on full power.

STUNNAH · 06-19-2017, 12:35 AM

So what was your boss's impression???

06-16-2017, 07:23 PM	#1
Kens ss Drives: 2011 SS/RS , L99 convertible Join Date: Aug 2015 Location: NE Ohio Posts: 310 View My Garage	What do you think happened? Okay so a couple months ago installed Kooks headers with hi flow cats, already had CAI cold air intake, Then got a remote tune. The day I did the tune. The car was wicked fast and throttle RESPONCE was incredible! However, today finally took my boss for a ride, after telling him repeatedly that my car could hold up against his '15 mustang 5.0... On three separate opportunities to mash the pedal from a dead stop, the throttle RESPONCE was extremely disappointing. It acted as follows: stopped, turned off both nannies, mashed the pedal to the floor, tires did not even break loose, seemed to take time to get to full power, (not a cough or surge, but like it was slow to realize what I was doing) it took a second or three of before she woke up and went full throttle. Almost like the engine said, sorry didn't realize you were going to do that, but I see you are at full throttle, okay boys lets get her moving! Only about 200 miles since, install of headers, cats and tune and always run Shell 93 octane. Thoughts??? Can I download any data and send to the tuner, to diagnose and to make sure setting are still correct? __________________ Last edited by Kens ss; 06-16-2017 at 07:38 PM.

06-16-2017, 07:37 PM	#2
nickiscoolerthancool Drives: '14 Camaro SS - Airlift Join Date: Aug 2014 Location: NJ Posts: 155 View My Garage	Did you put it in track mode? __________________ http://www.instagram.com/shortbuspilot

06-16-2017, 07:47 PM	#4
nickiscoolerthancool Drives: '14 Camaro SS - Airlift Join Date: Aug 2014 Location: NJ Posts: 155 View My Garage	Should have lost traction if you mashed on it, contact tuner! __________________ http://www.instagram.com/shortbuspilot

06-16-2017, 08:02 PM	#5
Kens ss Drives: 2011 SS/RS , L99 convertible Join Date: Aug 2015 Location: NE Ohio Posts: 310 View My Garage	Is it possible something in the valve train would act like this? Valve springs, push rods? The car still sounds healthy, and when she eventually decides to Reach full throttle, runs fast and heathy too. Just a steady build up to full powere taking a second or three? Although she did not break tires free at a dead stop, the shift to second did beak them loose. __________________

06-16-2017, 09:41 PM	#6
QUICRNU Drives: Z06 wannabe Join Date: Feb 2015 Location: Daytona Beach, FL Posts: 1,200	I thought cats at first....but if it was ok in higher rpm that wouldnt make sense, only takes few minutes to check them though. It is strange it changed, meaning it was better 200miles ago than now. If it was tractio control nannies you can try to ABS fuses pull to eliminate that. More likely in tuning than valvetrain.....does it have a miss at all? Loose plug wire etc? __________________ Apex Focused

06-16-2017, 09:41 PM	#7
Jrichards73 Drives: 2011 2SS/RS Victory Red Join Date: Aug 2011 Location: Virginia Posts: 921	Drivetrain wouldn't do that. I've had that happen when the car is stone cold, like its protecting itself because the oil isn't hot enough to flow everywhere yet. After the cam I always let her idle to 150 coolant temp and the oil temp gauge is starting to move. The car runs on a 5v reference, so all the sensors need to be in agreement for it to give full power. So if one of the +5 is off (accelerator pedal or Throttle body) the ECU says no Bueno. I suspect that's the stone cold issue as well, oil temp is too low, so the Ecu is holding back. If you have a scan tool with live view you should be able to see what your throttle pedal is doing and what the TB is giving you in return. Your car is the same age as mine and I just had to replace the TB because the internal resistors wore out and when it added the rising 0v to +5v to the dropping +5 to 0v it was coming up with more than +5v and I got a no bueno. I did the Accelerator pedal at the same time because they were the same age, just as a CYA. If you record live data and send it to the tuner he should be able to see all those parameters as well. __________________ Updates: BTR Stage 2 VVT Cam Kit w/Smith Brothers Trunnions, Fluidampr, RX catch can, B&M Trans pan mod, Kooks Black Headers, Borla S-tunes, Eibach Multi-Pro-R2 coilovers and Swaybars, BMR Full Bushing kit with Toe and Trailing arms, RB Rotors w/EBC Pads, GForce 1400 Axles (now on order). AVH-X5800BHS in Scosche GM5201AB.

06-16-2017, 10:31 PM	#8
Kens ss Drives: 2011 SS/RS , L99 convertible Join Date: Aug 2015 Location: NE Ohio Posts: 310 View My Garage	Thank you for the replies... No miss or rough idle condition. Was warmed and drivin nearly 5 miles before I tried the launches. Was near 90 degrees outside, so warmer than when I first got the tune by perhaps 20 degrees, but that should not cause such a response. Dyno Steve suggested I check the plugs anyway and maybe even reload the tune. I will investigate and test more this weekend. Come to think of it, there was a few times since the tune where, I thought I smelled raw gas while driving, found no leaks, but maybe running too rich. I should see evidence when I check the plugs, I would think? __________________

06-17-2017, 11:16 AM	#9
gsxrturbo Drives: 2010 ss Join Date: Oct 2015 Location: windom mn Posts: 337	I would do the fuse pull to reset your timing table

06-17-2017, 02:48 PM	#10
qcman Drives: 2013 Camaro 2SS RDP Tuned L99 Join Date: Apr 2013 Location: Ottawa, Canada eh? Posts: 1,889	I notice the headers are fairly new when they were installed were the spark plugs removed during the install? I've read a lot of issues here with plugs being cracked during a header install so thought I would mention that.

06-18-2017, 09:02 AM	#12
Avenging Orange Drives: 2010 Inferno Orange 2SS/RS Join Date: Apr 2010 Location: Clermont, IN Posts: 3,297	Have you tried to launch since then? Just thinking outside the box here.....high heat/humidity + added weight of the passenger............ __________________ 2010 Inferno Orange 2SS/RS M6 Black Leather, Sun Roof, OBX Headers, Borla touring axle back, Cold Air Inductions CAI , non synthetic fluids, BMR total bushing upgrade/1" lowering springs, DSE 32mm rear sway bar. GM fe4 shocks/struts/LCA's, AAM 3.91 diff, Vertini RFS1.8 20x9 +30. Conti ExtremeContact Sport 275/35/20. sjm autoprod ABL dash kit. Mike Norris tuned 413/419. Avenging Orange: 43 years of not buying into the Hype........and damn proud of it!! https://youtu.be/9JD9it6SmB8 https://youtu.be/xmelTlEzI34 KICKING CANCERS ASS SINCE 2015!!

06-19-2017, 12:35 AM	#14
STUNNAH "BEASTM*DE" Drives: 2013 ZL1 Black Join Date: Aug 2016 Location: Tennessee Posts: 1,655 View My Garage	So what was your boss's impression??? __________________ Vengeance Racing Stage 1 Kit 575rwhp, 569 rwtq... Rims powder coated gloss black...BFG'S Comp 2 A/S... Dual 10" Kicker Comp S Subs 1200w...