C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Tunercat issue

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Old Jun 24, 2011 | 09:00 PM
  #21  
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I bought a laptop with a serial port because I couldn't find a reliable and consistent response for a good USB cable.

That being said, is there some kind of handshaking issue with the COM port that can be fiddled with?
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Old Jun 24, 2011 | 09:58 PM
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It can be, but I've had zero luck with it.
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Old Jun 24, 2011 | 10:21 PM
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I have a USB to serial converter somewhere. It works with a computer with no serial interface. Never had an issue with it. You'll need a cable with a serial interface, though. If you can get access to a cable you can borrow my interface to see if it's a cable issue. I haven't been using it, because I don't like all the extra wires. That's why I bought an old laptop.
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Old Jun 25, 2011 | 10:24 AM
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Originally Posted by JackDidley
You are probably correct. Ive had the 6E definition file a long time. Even before I started doing my own chips. I dont think the difference would effect this problem, would it ??????
No it wouldn't, just wanted to make sure if he tried going to a stock burn that the correct type would be used.

I use a generic USB <--> Serial adapter I picked up at Staples with a gift card and it works just fine. I use EASE Scan Tool in WIn7 as I haven't yet bought an APU1.

Know anyone with something like an old Snap-On ODB1 scanner? I'd be interested if any tool at all can scan the car ok. If you're running a 6E tune then telling the <insert tool> it is an '89 will probaly have to happen.

Last edited by scorp508; Jun 25, 2011 at 10:27 AM.
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Old Jun 25, 2011 | 01:18 PM
  #25  
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Originally Posted by scorp508
No it wouldn't, just wanted to make sure if he tried going to a stock burn that the correct type would be used.

I use a generic USB <--> Serial adapter I picked up at Staples with a gift card and it works just fine. I use EASE Scan Tool in WIn7 as I haven't yet bought an APU1.

Know anyone with something like an old Snap-On ODB1 scanner? I'd be interested if any tool at all can scan the car ok. If you're running a 6E tune then telling the <insert tool> it is an '89 will probaly have to happen.
I wonder if one of those cheap code readers that are used at advanced or autozone could communicate??? Throwing darts......
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Old Jun 25, 2011 | 01:59 PM
  #26  
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Code readers really just ground the two ALDL connectors same as paper clip trick, that much will work. I can pull codes and drove it in Diagnostic Mode yesterday.

I dont know anyone in TN with the tool nearby, I guess I'll have to wait til I get back to the shop in Smyrna tuesday and talk with the tuner who burned it. The various programs I've used shouldn't care too much but I believe both the Tunerpro and Datamaster were tried for 89. I tried everything I could think of and used the Datamaster troubleshooting (latency in the Com port, ALDL link timing, etc.). Nothing reads.
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Old Jun 25, 2011 | 02:43 PM
  #27  
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You might want to verify that your ALDL Pin E is connected to the ecm pin A8. Maybe a bad connection/harness issue.
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Old Jun 28, 2011 | 06:29 PM
  #28  
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Well, talked to the chip tuner today. He didnt datalog when he burned the chip. He had a scan tool to read the BLMs and an LM1 wideband clipped on the tailpipe while she was on the dyno. He originally had trouble burning the chip but Craig Moates helped him through it.

So it looks like I still can't read anything on my laptop, but in principle you can because I watched them read the scan tool values with a GM reader.
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Old Jul 2, 2011 | 07:45 AM
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Originally Posted by vader86
Sent an email off to TTS, but wont get any answer til Monday I guess.

Also used their D32 64-bit driver for the Win7 system beforehand.
I have had many different programs not run on a 64 bit windows platform. If yours is a 64 bit machine why not borrow a standard 32 bit laptop and see if it is the laptop and not the software?
Dave
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