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Old 01-14-2013, 06:51 PM   #1
Stephen12ZL1


 
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my tuner thinks ID850s may be too much injector?

My tuner says that ID850s may be too much injector at idle as the pulse width can only be backed off but so much. Considering how many people here use them...how could this be a problem? Any suggestions or words of wisdom to make my tuner feel better?
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Old 01-14-2013, 06:55 PM   #2
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What are your mods?
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Old 01-14-2013, 07:15 PM   #3
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Old 01-14-2013, 08:29 PM   #4
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I have them in my 100% stock zl1 testing them for this.
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Old 01-14-2013, 08:53 PM   #5
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Originally Posted by ADM PERFORMANCE View Post
I have them in my 100% stock zl1 testing them for this.
any issues so far? My tuner said he had a CTS-V in his shop once that was stuck with a rich idle due to the ID850s inability to dial back enough fuel. Why is it I have never hear one single complaint in any forum?
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Old 01-15-2013, 01:33 AM   #6
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Did your tuner use the injector data provided by ID? Specifically did he correctly use the "Short Pulse Adder" table?
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Old 01-15-2013, 06:35 AM   #7
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he hasn't tried my car yet...just anticipating a problem...I will inform him about the short pulse adder table
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Old 01-15-2013, 07:10 AM   #8
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No issues
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Old 01-15-2013, 09:19 AM   #9
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great...any special tricks with the tune to make the idle not so pig rich?
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Old 01-15-2013, 09:38 AM   #10
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We've used them before also. They are really easy to dial in.
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Old 01-15-2013, 10:52 AM   #11
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Quote:
Originally Posted by Stephen12ZL1 View Post
My tuner says that ID850s may be too much injector at idle as the pulse width can only be backed off but so much. Considering how many people here use them...how could this be a problem? Any suggestions or words of wisdom to make my tuner feel better?

He is wrong.
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Old 01-15-2013, 12:23 PM   #12
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He is wrong.
LOL!
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Old 01-15-2013, 09:17 PM   #13
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Quote:
Originally Posted by Stephen12ZL1 View Post
he hasn't tried my car yet...just anticipating a problem...I will inform him about the short pulse adder table

And the "Injector Offset" table. Just as important. Three tables in all need tuning for an injector swap, as long as only the injectors are changed.
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Old 01-15-2013, 09:23 PM   #14
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great...any special tricks with the tune to make the idle not so pig rich?
This!
Attached Files
File Type: zip ID850 - GM Characterization Tables - 3-23-2011.zip (62.9 KB, 70 views)
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Old 01-16-2013, 12:26 AM   #15
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i run ID1000cc and they run great, its all in the tune
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Old 01-16-2013, 09:16 AM   #16
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thanks for the tips...very much appreciated!
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Old 01-16-2013, 11:31 AM   #17
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Id1000s have no issues so 850s shouldn't either. Even 2000s idle fine.
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