How to do basic diagnosis with your EFILIVE software - Page 2 - Chevy and GMC Duramax Diesel Forum
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post #11 of 29 (permalink) Old 01-15-2013, 12:41 PM Thread Starter
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Considering it could be a possible bad turbo or leak, your MAF should tell this story. What are your grams/sec getting up to under WOT?


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post #12 of 29 (permalink) Old 01-15-2013, 01:28 PM
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I cannot view my own data logs, however, as memeory serves while looking at my cts I was getting ~450gm/s. If the turbo and or wastegate was going bad would the lack of boost (MAP) pull fueling out? or would it continue to pour in fuel according to the MAF. seems to me if the MAF reading is on point the compressor side of the turbo is good? Is there a way to test the turbo/wastegate? I have pressure tested the compressor side with no leaks. FYI this all started when i deleted my EGR. Thanks so much for your help guys!

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post #13 of 29 (permalink) Old 01-15-2013, 01:48 PM Thread Starter
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When deleting egr and issue all if the sudden happened there is likely a leak there. I bet you would see grams/sec drop when it occurred.


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post #14 of 29 (permalink) Old 01-15-2013, 02:41 PM
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wouldn't the truck blow black smoke with a boost leak? Or does the MAP scale back the fuel to match boost?

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post #15 of 29 (permalink) Old 01-15-2013, 05:55 PM Thread Starter
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Yes the truck can smoke with a boost leak, but if MAF is reading low then the tune will be limited by that value.


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post #16 of 29 (permalink) Old 01-15-2013, 11:28 PM
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Have you tried calling us? This is the first I've heard of this.


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post #17 of 29 (permalink) Old 05-30-2013, 05:54 PM
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Quote:
Originally Posted by mrmanners View Post
Great information Kory thanks.
To data log just plug autocal into truck, drive, then autocal into computer for results, right?


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post #18 of 29 (permalink) Old 05-30-2013, 07:05 PM
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Quote:
Originally Posted by Get It Boy View Post
To data log just plug autocal into truck, drive, then autocal into computer for results, right?
There is more to it than that. Give me a call tomorrow and I will walk you through it.
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post #19 of 29 (permalink) Old 08-14-2013, 07:14 PM
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Wow, thanks for this. I got my autocal from a local shop just in case I needed some more answers and I'm finding out much more here!

Thanks

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Downpipe <> "Clean" Exhaust <> AFE Intake Stage 2 <> PPE Deep Tranny Pan <> TransGo Jr. <> PCV Reroute <> Resonator Plug <> <> Amsoil By-Pass <> Synthetic Fluid Everywhere <>. Auxiliary Fuel Filters 2 cat filters 1R-0749 & 175-2949 <> Rear Air Bags <> LED fogs & rear work lights <>6000 lumens Drive lights<> Pillar gauges <> Debadged <> full front bumper replacement <> <> stock Fuel Filter replaced w/ 1r-0750 or 0749 <> EFI LIVE from ATP by Rob <> Michelin Green X<> Kennedy Lift Pump <>Custom Flatbed<>Edge CTS gauges <> Built tranny-alto clutches, heavy duty Precision TC, new tranny lines-solenoid valve body, Mishimoto all hoses and boots, Rancho shocks
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post #20 of 29 (permalink) Old 11-06-2014, 03:23 PM
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So how can I tell if my lift pump pressure is too high?

2005 Chevrolet LLY 218,000 miles, EFI Live DSP5 by Idaho Rob, Built trans, TransGo shift kit, Precision torque converter, Kennedy Twin Lift Pump, Edge Insight CTS monitor, PPE Shim Kit, ARP Head studs w/grade C gaskets, LML Exhaust Manifold, ProFab EGR Delete Pipe, Pro Fab 3 inch downpipe, Diamond Eye 5 inch straight-pipe exhaust, Full LBZ intake w/MP

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