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car breaks up around 6800 rpm

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Old Dec 21, 2017, 08:35 PM
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car breaks up around 6800 rpm

car is only running 12 psi its on an sd tune

changed map sensor
got rid of maf sensor
changed cam sensor
changed injectors
changed coil
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Last edited by Dakota Evo; Dec 21, 2017 at 08:43 PM.
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Old Dec 27, 2017, 12:36 PM
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Who tuned it on SD?

Also, need to have a wideband logged.
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Old Jan 3, 2018, 04:23 AM
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Not much to look at from the log but...

Load to KPA is off...

You seem to be running pig rich especially on the high rpms... (injector duty vs boost comparison)

Could be your MAF scaling is off... could be you have not tuned your afrs right... could be anything..

post a screen shot of your 3D VE table, Maf Scaling & Comp, Kpa to Load, Volts to KPA, High Oct fuel Map, Knock sensor filtering tables, together with a log that has afrs....
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