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tuning at idle problems (aps 880cc with haltech)

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Old Apr 23, 2011 | 10:35 AM
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Default tuning at idle problems (aps 880cc with haltech)

the engine temp is in the midle on the guage. When the car is at idle it dies when I try to lean it out to 13.7- 14.2arf. It seem to be ok when the arf is at 11 -12 that is a bit rich. i can't raise the rpm with the haltech.


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Old Apr 23, 2011 | 03:35 PM
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are you using copy thru timing under vacuum? There are very few ppl that self tune Haltechs. I;m tryin to learn more myself.

Last edited by str8dum1; Apr 23, 2011 at 03:36 PM.
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Old Apr 23, 2011 | 04:21 PM
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my z idles great on 800ccs, bc stage 2 cams and haltech.

I set my low rpm vacuum settings to copy through and then tune the fuel tables. Be sure to set your latencies too.
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Old Apr 25, 2011 | 09:56 AM
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low rpm vacuum settings to copy through


Where is that? do you have a pic i don't see it the ecu manager?
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Old Apr 25, 2011 | 10:10 AM
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The copy through setting is disable becuase i am using mass air flow setting is disabled. I have a air temp sensor.

Last edited by specialist; Apr 25, 2011 at 10:14 AM.
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Old Apr 25, 2011 | 10:14 AM
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you select the cells and hit "C"
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Old Apr 25, 2011 | 10:51 AM
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You want to copy through timing, not MAF or fuel (both of which are possible with the Haltech). Well, MAF shouldn't effect anything anyway... (I presume you are a 6MT)
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Old Apr 25, 2011 | 07:23 PM
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i can relate to what you're saying about idle afr's. currently i see 11.5-12.5 afrs at idle and thats what works best for me. make sure your injector dead times are set correct for the specific injector you are using. i played with copy through ignition timing for vacuum settings but found i got a lot of engine back fires and lean spots using that so i disabled it. and you are correct you can not adjust idle with haltech. though that would be nice.
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