PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Tuning issue or injectors?

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Old Mar 9, 2004 | 12:56 PM
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Default Tuning issue or injectors?

Here is my dyno graph from Saturday with the A/F ratio on it. It is kinda wavy, but what concerns me is right there at the end, where it goes lean at the HP peak. Do you think some Edit tuning could tweak that, or is my stock 2002 injectors just "used up" at that point?

Last edited by gomer; Mar 9, 2004 at 01:15 PM.
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Old Mar 10, 2004 | 01:48 PM
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soo.... what do you guys think?
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Old Mar 10, 2004 | 01:55 PM
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Not a dyno expert, but with your mods I'd say your about at the limits of the stock injectors...
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Old Mar 10, 2004 | 07:35 PM
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dunno --the car was runnin fat up until you got up there --doesnt look like much of a prob to me
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Old Mar 10, 2004 | 11:33 PM
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Could be the injectors are going static but you should log the pw just to be sure. BTW IMO 13.0 AFR is not "FAT". You do have a valid concern running close to 14.0 AFR at 6500 rpm.

Greg
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Old Mar 10, 2004 | 11:59 PM
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doesn't look that bad. maybe getting a little lean at the end. do you know what your duty cycle is like? have you tuned the car? have you changed the pe/rpm table?
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Old Mar 11, 2004 | 06:43 AM
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hell i bet your injectors are static before 5000rpm, the engine just sucked up what was left if those are stockies.
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Old Mar 13, 2004 | 08:31 PM
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i guess check out the duty cycle with atap
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Old Mar 14, 2004 | 11:31 PM
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Originally Posted by GrapeApe
i guess check out the duty cycle with atap
My Atap conveter box is being repaired, when it comes back I'll do some logs and check the duty cycle on them.
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