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

[Update]: Did some tuning.

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Old Sep 9, 2003 | 09:48 PM
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Default [Update]: Did some tuning.

Wellll..... I got my EASE Diagnostics for 82-95 ODBI GM vehicles today. Rock on! :cheers:

I did some scans and then added 1 turn to my AFPR and burned a new chip adding 2.9% fuel in the upper RPM and pulling 2* out of the entire timing table.

Results....

Knock retard has falling from 7.7* to a peak of 2.5*.

O2 sensor has come back to life. Yahoo!! Instead of dieing and going nearly instantly from 800ish millivolts at 4900 to nothing it now hangs in the 800mv area and then dies at 5600 dropping to nearly nothing. Going to add a touch more fuel in the upper upper RPM area and see if it wakes up again. :yesnod:

The bottom of 2nd gear feels much stronger now.


[Modified by scorp508, 9:49 PM 9/9/2003]


[Modified by scorp508, 10:52 PM 9/9/2003]
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Old Sep 9, 2003 | 09:51 PM
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Default Re: [Update]: Did some tuning. (scorp508)

:cool:

it's amazing what a little tuning can do!
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Old Sep 9, 2003 | 09:54 PM
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Default Re: [Update]: Did some tuning. (scorp508)

:cool:
Scan tool is on my list.
Knowing how to use and understand is next on the list :D :smash:
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Old Sep 9, 2003 | 10:00 PM
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Default Re: [Update]: Did some tuning. (scorp508)

Brian, 800mV at 5,600rpm sounds pretty low, have you considered bumping fuel pressure till it hangs in just above 900mV.
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Old Sep 9, 2003 | 10:03 PM
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Default Re: [Update]: Did some tuning. (scorp508)

Do you have a modle number for that scan tool?
Went to the web site and couldnt find an ODB1 scanner
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Old Sep 9, 2003 | 10:06 PM
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Default Re: [Update]: Did some tuning. (65Z01)

Brian, 800mV at 5,600rpm sounds pretty low, have you considered bumping fuel pressure till it hangs in just above 900mV.
Low, but better than the 60mv we were seeing before. :) Baby steps. I've only got about another 1/2-3/4 turn higher on my AFPR i can go.
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Old Sep 9, 2003 | 10:07 PM
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Default Re: [Update]: Did some tuning. (91superram)

Do you have a modle number for that scan tool?
Went to the web site and couldnt find an ODB1 scanner
I ordered...

PER-GM1-1: $315.00
http://www.easediagnostics.com/perso...nal_gmobdi.htm

.... it hooks up to any laptop with an available serial (COM) port. I'm running it under Windows XP, but it supposed to be compatible with 95/98/ME/NT/2000/XP.
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Old Sep 9, 2003 | 10:10 PM
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Default Re: [Update]: Did some tuning. (scorp508)

Thanks :D


[Modified by 91superram, 3:11 AM 9/10/2003]
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Old Sep 9, 2003 | 10:14 PM
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Default [Update]: Did some tuning.

Nice Scorp.

Hope it goes well for you. You've been through hell and back. Time for good things to happen. :yesnod: :cheers:
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Old Sep 9, 2003 | 10:20 PM
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Default Re: [Update]: Did some tuning. (scorp508)

I would imagin that will be my next adventure in getting to know my car. Get ready for more questions!! :) Thanks for the info on the pipe plug.. And good luck. :cheers:
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Old Sep 9, 2003 | 10:53 PM
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Default Re: [Update]: Did some tuning. (Corvette0096)

Whoops, sorry guys I was looking at the wrong scan file. It is only 2.5* not 4*.
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Old Sep 9, 2003 | 10:58 PM
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Default Re: [Update]: Did some tuning. (scorp508)

Do you have a modle number for that scan tool?
Went to the web site and couldnt find an ODB1 scanner

I ordered...

PER-GM1-1: $315.00
http://www.easediagnostics.com/perso...nal_gmobdi.htm

.... it hooks up to any laptop with an available serial (COM) port. I'm running it under Windows XP, but it supposed to be compatible with 95/98/ME/NT/2000/XP.
Bookmarked
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Old Sep 9, 2003 | 10:59 PM
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Default Re: [Update]: Did some tuning. (scorp508)

You got my message ?
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Old Sep 9, 2003 | 11:00 PM
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Default Re: [Update]: Did some tuning. (SloRvette)

You got my message ?
:yesnod: Thanks! I didn't actually "get it" until a few hours after you sent it thanks to my phone not liking to tell me when I get messages and calls. I was at a cousin's bday party all that day. Looks like you were exactly right (again).


[Modified by scorp508, 11:00 PM 9/9/2003]
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Old Sep 9, 2003 | 11:02 PM
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Default Re: [Update]: Did some tuning. (scorp508)

:cool:
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