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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 06-28-2009, 08:06 AM   #1
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Did this fix anything? What's the thing that plugs into the air intake?

Watch the video and tell me if it helped please. Car seemed a little peepier.




Ok so what the heck was the thing I unplugged and plugged back in? All I know before the car was not as peppy, now it seems to be peppier, still not right but quicker.

Here is the interesting thing. All the playing around and stuff since I got the car new I was getting 12.5-14.5 miles per gallon. Today I reset the gas milage thing and have been romping it more than I have in the past and I am getting 17.8 miles per gallon. Have driven like 3 days worth of driving this morning so far and romping the heck out of it.

Also the car is idling rough since I unplugged it and plugged it back in. It was suggested to me in a PM that it may not have a good connection. Is the car relearning now since that may of not been working right?

I just do not know what exactly it does so some insite would be great.
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Old 06-28-2009, 08:11 AM   #2
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after watching both, not timing it though.. seems a little better... what I would do then is unplug all the connectors under the hood by the throttle body as well.. for the TPS etc. AND take the ground off the battery for about an hour... then hook it all up, so it resets.. and see what happens then...
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Old 06-28-2009, 08:18 AM   #3
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Hey Scott -

Used a Robic stopwatch with your video. Used only digital speed/sound to trigger it. Average 0-60 time was 6.25 sec. A little faster than before (I was averaging 6.44 sec on old video), but that is probably due to early morning weather conditions. The car sounds good, just not the times the magazines have been touting. IMO the best solution is a trip to a dyno. Even if a car runs "perfect", you can always find more HP with a good tune.
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Old 06-28-2009, 08:22 AM   #4
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Quote:
Originally Posted by DanD View Post
after watching both, not timing it though.. seems a little better... what I would do then is unplug all the connectors under the hood by the throttle body as well.. for the TPS etc. AND take the ground off the battery for about an hour... then hook it all up, so it resets.. and see what happens then...
Fbodfather said not to unplug the battery. He wants to make sure any lower level codes are saved so they can fix it.
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Old 06-28-2009, 08:44 AM   #5
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Doesn't look any better to me, still between 6-7 seconds by my rough count. I am not a GM tech, but I don't really understand their hesitance to reload the computer with new software. It can't take more than an hour and to me it is the simplest thing to try. It is too bad there is no easy way to verify 100% throttle is opening when you floor it, I bet the ECM is backing off the throttle for some reason.
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Old 06-28-2009, 08:50 AM   #6
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Fbodfather said not to unplug the battery. He wants to make sure any lower level codes are saved so they can fix it.

I guess that would be "if" something gets done and soon... as you know mine is 231 and seemed good, even though now I have headers back and a converter.. but was good before..

FYI mine had over 50 miles on it from GM.. so I know they drove mine around.
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Old 06-28-2009, 10:02 AM   #7
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Your car does seem to be running better. It's shifting better and the rpms seem to be climbing the tach faster.
To me it looks like your running around 6.0 sec (:23 count to :29 count).

But its hard to be accurate with the video. I wish you lived close to me. I would let you use my G-Tech and we could have a quick race. That would really answer the question as to how well your car is running.
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Old 06-28-2009, 10:27 AM   #8
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Who is your dealer and Service manager?

Quote:
Originally Posted by Scott@Bjorn3D View Post
Watch the video and tell me if it helped please. Car seemed a little peepier.

Hi Scott,

I want your dealer and mine to talk.
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Old 06-28-2009, 10:54 AM   #9
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My service Manager is Allison, 334-687-7016.

Ok so what the heck was the thing I unplugged and plugged back in? All I know before the car was not as peppy, now it seems to be peppier, still not right but quicker.

Here is the interesting thing. All the playing around and stuff since I got the car I was getting 12.5-14.5 miles per gallon. Today I reset the gas milage thing and have been romping it more than I have in the past and I am getting 17.8 miles per gallon. Have driven like 3 days worth of driving this morning so far and romping the heck out of it.
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Old 06-28-2009, 10:57 AM   #10
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What's the thing that plugs into the air intake?

Ok so what the heck was the thing I unplugged and plugged back in? All I know before the car was not as peppy, now it seems to be peppier, still not right but quicker.

Here is the interesting thing. All the playing around and stuff since I got the car new I was getting 12.5-14.5 miles per gallon. Today I reset the gas milage thing and have been romping it more than I have in the past and I am getting 17.8 miles per gallon. Have driven like 3 days worth of driving this morning so far and romping the heck out of it.

Also the car is idling rough since I unplugged it and plugged it back in. It was suggested to me in a PM that it may not have a good connection. Is the car relearning now since that may of not been working right?

I just do not know what exactly it does so some insite would be great.
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Old 06-28-2009, 10:58 AM   #11
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I think it may be the MASS airflow sensor
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Old 06-28-2009, 11:08 AM   #12
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..all this trouble from a bad/defective sensor?..just maybe..
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Old 06-28-2009, 11:11 AM   #13
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Well that's not suprising. If a car isn't running right, you can get bad performance, and bad gas mileage.
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Old 06-28-2009, 11:24 AM   #14
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Dont know how many miles you have on it, but once the rings seat, the motor will make more power. Its just getting broke in and happy!
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Old 06-28-2009, 11:28 AM   #15
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Quote:
Originally Posted by Scott@Bjorn3D View Post
Ok so what the heck was the thing I unplugged and plugged back in? All I know before the car was not as peppy, now it seems to be peppier, still not right but quicker.

Here is the interesting thing. All the playing around and stuff since I got the car new I was getting 12.5-14.5 miles per gallon. Today I reset the gas milage thing and have been romping it more than I have in the past and I am getting 17.8 miles per gallon. Have driven like 3 days worth of driving this morning so far and romping the heck out of it.

Also the car is idling rough since I unplugged it and plugged it back in. It was suggested to me in a PM that it may not have a good connection. Is the car relearning now since that may of not been working right?

I just do not know what exactly it does so some insite would be great.
Scott, what are you plugging and unplugging?
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Old 06-28-2009, 11:33 AM   #16
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Quote:
Originally Posted by rpepka View Post
Scott, what are you plugging and unplugging?
There is the cable that plugs into the air intake pipe. It looked connected to me but I went ahead and unplugged it and plugged it back in good and solid. Seems to of done something.

I have a question out to GM performance guy and waiting to see what he says. The car is idling rough now but could be the computer needs to relearn if the Mass Airflow Sensor was not plugged in all the way. Reading about them gas milage should improve if one is not working and low end torque and HP.
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Old 06-28-2009, 11:54 AM   #17
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yup i would say it's the MAF and if it wasn't plugged in securely you would have some problems

i read that someone on here had got his car and it wasn't plugged in at all and it didn't through any codes
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Old 06-28-2009, 12:49 PM   #18
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I have the first run in the other thread about 6.8 sec and both runs in this video at 6.5

Not sure if you can account the unplug and replug of the MAF to attribute to that or not.

I did it several times and got the same results. Your car could be down on power. I know with motorcycles, not all are created equal.
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Old 06-28-2009, 01:06 PM   #19
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It's cool of you to save the codes for GM if they could use them for a fix.

Personally, I'd unhook the battery far a couple hours then punch the chit out of it for a couple days.
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Old 06-28-2009, 01:16 PM   #20
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It's cool of you to save the codes for GM if they could use them for a fix.

Personally, I'd unhook the battery far a couple hours then punch the chit out of it for a couple days.
If you unplug the battery, you have to reset the window indexing as well. Make sure you read the manual before you disconnect the battery.
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Old 06-28-2009, 01:47 PM   #21
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Those times you're running this morning are the times I've gotten with mine.

And guys, please don't tell me it's the humidity because Bonnies car had NO problem. I got half second better times with her car.
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Old 06-28-2009, 01:57 PM   #22
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It's definately not humidity. Another L99 posted on this discussion board today saying he got 5.2 0-60's with G-Tech. Good luck getting your cars running like they should guys.
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Old 06-28-2009, 02:26 PM   #23
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Old 06-28-2009, 02:37 PM   #24
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I had mine out yesterday. The car isn't as fast as I would like it to be. I would guess my 0-60 is about 6-6.5 secs. Granted I have just under 300 miles on the car. It's been fairly humid and I'm at about 5000 ft above see level. Hopefuly it improves once I'm broken in. And with traction and stabilitrack off I cannot get the wheel to spin or chirp when launching or when it shifts. I'm not saying anything is wrong with my car but there seems to be a wide variety of performance differences between each Camaro.
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Old 06-28-2009, 02:44 PM   #25
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I had mine out yesterday. The car isn't as fast as I would like it to be. I would guess my 0-60 is about 6-6.5 secs. Granted I have just under 300 miles on the car. It's been fairly humid and I'm at about 5000 ft above see level. Hopefuly it improves once I'm broken in. And with traction and stabilitrack off I cannot get the wheel to spin or chirp when launching or when it shifts. I'm not saying anything is wrong with my car but there seems to be a wide variety of performance differences between each Camaro.


the tires wont chirp with stabilitrack off, put it in M mode and then just shut off the traction control, it should break em loose on the launch, oh and also you need to get 500 miles on it first, at least thats how it was with mine
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