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Leaning out over 3000

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Old Aug 3, 2016 | 08:50 PM
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Default Leaning out over 3000

4.8 rebuilt to 309 stock heads with btr 660 kit ljms stage 2 cam chromoly pushrods mls gasket and head studs stock truck intake 80 lb injectors on stock truck return style system aem 380 lph in line pump gt45 eBay turbo, it leans out anything over quarter throttle most I've seen is 2psi before it leans out, did a data log today duty cycle was 9% driving before it would lean out , in park revving to 6100 it was 20% what could be the issue?
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Old Aug 3, 2016 | 09:11 PM
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Without knowing your fuel pressure or any tune info, you can't expect an intelligent response to the question. More info, please.
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Old Aug 3, 2016 | 09:53 PM
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cut tune 1 edit file.hpt rich tuning.hpttesting tutorial.hpt

8,3TUNUPDATA.hplits running at 58 psi,
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Old Aug 4, 2016 | 09:30 AM
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Is your tank sumped or stock g body?
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Old Aug 4, 2016 | 10:44 AM
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Originally Posted by drecpt83
Is your tank sumped or stock g body?
It's the stock tank with a -10 bulkhead at the lowest point return going through the old feed and a open vent
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Old Aug 4, 2016 | 10:50 AM
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Have you tried tuning it?
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Old Aug 4, 2016 | 10:54 AM
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Originally Posted by svslow
Have you tried tuning it?
I have several different base tunes all with the same results for the most part the one I uploaded earlier is the one that works best I've made a couple of tweaks to it but I'm new to tuning
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Old Aug 5, 2016 | 07:21 AM
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If the fuel pressure does not drop it would be all in the tuning.
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Old Aug 5, 2016 | 09:25 AM
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A "base tune" is just that, a base. Every set up is going to be different and will need tweaking.
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Old Aug 5, 2016 | 06:45 PM
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SO a random guess tune doesnt work properly...who'd have thought ?

Take it a tuner who knows what they're doing before you blow it up.
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Old Aug 7, 2016 | 03:09 PM
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Originally Posted by stevieturbo
SO a random guess tune doesnt work properly...who'd have thought ?

Take it a tuner who knows what they're doing before you blow it up.
Here's a video of it
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Old Aug 7, 2016 | 03:12 PM
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All good...but I dont think the video is going to help with tuning.
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Old Aug 7, 2016 | 05:15 PM
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Originally Posted by Kecrew
Attachment 546453

Attachment 546454its running at 58 psi,
Hey man yeah, post up a .hpt file and a .hpl log file i can open with the software and ill take a look at it for ya.. im only guessing, but thinking your PE and BE isn't set correctly and not knowing what your VE looks like really i have no idea..

Not only that, are you running stock O2s or wideband and do you know how to tune your VE, PE and BE ? if you dont, i can show you if you want.. np i love helping people out BIG TIME not only helps them learn, helps me learn more too..

Sorry but iv tried opening your files but keeps saying they are HTML not .hpt

Maybe im not doing something right but im used to hptuner.com opening them straight up on with the VCM suite software..

But yeah neways man peace skype me if you want anytime @ the404man_Osborne
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Old Aug 8, 2016 | 07:06 AM
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I guess he didn't like the questions asked in his other thread, on the same topic..
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Old Aug 8, 2016 | 07:22 AM
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The OP ? if so whats the other post, iv searched and it seems this is the only one he has... link me please thanks

Oh never mind i found it.. ha, had same name and was mixed in only noticed when i saw the replies sorry, totally wasn't looking hard enough lol

Last edited by the404man; Aug 8, 2016 at 07:47 AM.
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