hi new to tuning i have a stand alone harness it runns fine to about 4500 then it just quits pulling ive tried everything i can think of any help would be apperciated
hi new to tuning i have a stand alone harness it runns fine to about 4500 then it just quits pulling ive tried everything i can think of any help would be apperciated
According to the title of your tune, you are boosted. Your tune is set up for a 1bar MAP sensor and has no boost enrichment. You should be running COS3 and a 2 bar MAP sensor and giving it some more fuel and backing off of the timing a bit above 105 KPA.
You need to get this sorted out before you pop the engine. You are probably very very lean.
Jeff
Last edited by Lextech; 02-22-2014 at 06:10 AM.
98 GMC RCSB, 5.0, 4L80e, Moser M60, 4.10 gear, Homemade twin turbo w/Junkyard T3 turbos, 24x CNP, 12200411 PCM.
how can i set it up for the boost enrichment
Open up your tune in EFILive then go to the top and open the Help tab. Then go to Turorials on open the Custom OS upgrade tutorial LS1. Read and follow that PDF. You will also need a 2 Bar MAP sensor and set table C6301 to 190. Make sure you have enough injector to fuel that setup.
Jeff
98 GMC RCSB, 5.0, 4L80e, Moser M60, 4.10 gear, Homemade twin turbo w/Junkyard T3 turbos, 24x CNP, 12200411 PCM.
i maybe in over my head that looks complicated
Print the COS Tutorial ... read it several times ... and make some notes about the necessary steps. It is actually very straight forward.
Do you have a 2 bar (or 3 bar) MAP sensor fitted ? The stock 5.3L 1 bar MAP is useless under boost conditions.
If you are using EFILive for this project, you may want to consider posting on their Forum to get support with respect to the COS upgrade.
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