PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

wtf??

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Old Oct 23, 2007 | 04:39 PM
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02ssjimc's Avatar
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i'm just alittle confused about whats going on with my car. i'm trying to get all the info i can. i don't know why my car is not throwing codes my cats were so bad i couldnt even spin the tires and its a 6speed no codes .got them replaced it ran great for 2 days, now i think my 02 sensors are bad. they are slow lazy i'm losing power gas milage no codes why?????????? is something wrong with my pcm??? car is running lean the highest my 02s were is in the 700mv both banks. ltfts are in the 6s at cruising speed 55-60mph i don't want to change the injector slope till i change 02s. only mods are 4:10 gears lid stock filter cat back and smooth bellow. oh it does idle alittle rough. thanks
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Old Oct 23, 2007 | 08:57 PM
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get a tune. and you need to break up your paragraphs..and this spin tire thing you talk about...tires warm up, conditions change...
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Old Oct 23, 2007 | 10:06 PM
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sorry, but why is this not throwing codes?? i have the diablo but i don't want to chage anything yet.
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Old Oct 23, 2007 | 11:21 PM
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Have checked if the O2 sensor-related codes are turned off? Meaning they could be set to NOT illuminate SES light and NOT report an error. So...No codes, no SES light.
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Old Oct 24, 2007 | 06:14 AM
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how do i check that???
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Old Oct 25, 2007 | 12:05 AM
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Originally Posted by 02ssjimc
how do i check that???
Dunno if your Diablo tuner can do it, but check into it. I don't use Diablo so can't help you there.

If it doesn't but you know someone with LS1Edit, HPTuners or EFILive, then you can do it yourself. The diagnostic codes can be individually managed via the Diagnostics settings in the PCM using just the software + cable and a laptop.

The alternative is to take the car to a tuner or the dealer.

Here's an example of what it looks like in LS1Edit v1.5




Last edited by BigBirdTA; Oct 25, 2007 at 12:13 AM.
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