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TPiS Modded Intake with LS7 TB - Help Please

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Old Dec 20, 2010 | 06:39 PM
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Default TPiS Modded Intake with LS7 TB - Help Please

I put a TPiS intake modded for a 90mm TB and a LS7 TB on my CTS-V with a LS6 and am getting Reduced Power Mode when ever I get on it. Does anyone know what is causing this and how to fix?

Thanks, Jeff

Last edited by jpoole; Dec 20, 2010 at 06:50 PM.
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Old Dec 20, 2010 | 07:21 PM
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You need to raise the P1514/P0068 Error table to match your WOT airflow (in g/cyl)

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Old Dec 20, 2010 | 07:26 PM
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Thanks Russ, do you know where that is in HP tuners and aproximately how much?
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Old Dec 20, 2010 | 07:45 PM
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Engine Diag>General>TPS Sensor>Cal Airflow-P1514/P0068 Error.

Start by multiplying the entire table by 1.25. Then do a WOT scan logging Dynamic Cyl Air (g/cyl). Just make the P1514/P0068 table values slightly higher then your scan values.

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Old Dec 20, 2010 | 07:49 PM
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Thanks Russ, found the table and have increased by 1.25. I am gonna install the tune and see what happens. Really appreciate the help!
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Old Dec 21, 2010 | 07:57 AM
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Well, did something bad. Went to flash and was having trouble connecting so i tried to write full pcu in test write mode. It connected but was going to take 15 minutes so I unplugged. Now car shows low battery error and won't turn over or even try.
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Old Dec 21, 2010 | 09:00 AM
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Originally Posted by jpoole
Well, did something bad. Went to flash and was having trouble connecting so i tried to write full pcu in test write mode. It connected but was going to take 15 minutes so I unplugged. Now car shows low battery error and won't turn over or even try.
That was a major no-no. You probably just killed your PCM.

Good luck.
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Old Dec 22, 2010 | 02:52 PM
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Update: All is good.

Battery in car was bad and once replaced everything is fine. According to HPTuners support, they don't know of a way to ruin a PCM when in "In-Active Test Mode" like I was.

Also, made the flash today and it fixed my original issue.

Last edited by jpoole; Dec 22, 2010 at 03:03 PM.
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Old Dec 22, 2010 | 05:49 PM
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Man I need to get hptuners. Or find someone around here that has it. My car needs some tuning too.
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Old Dec 22, 2010 | 05:55 PM
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Yea, I just found a shop and did a dyno tune. I use HPtuners to import and mod the dyno tunes when I need. I can't tune cause I am a novice.
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