Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

SERT Tuning Experts - Up for the challenge

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  #1  
Old 05-05-2007, 08:06 PM
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Default SERT Tuning Experts - Up for the challenge

OK, your mission if you choose to accept it is to help me figure out if possible how to get rid of a decel pop. It occurs in an engine braking type event when the RPMS are varying between 2300-2600. Usually it will happen if my rpm's are steady around 2600 and I left off the gas in a lower gear. I have added fuel from the enleanment tables (decrementing)between 96-128c and that did not seem to help. My tuner has maxed fuel between 2000-3000 rpm's in TP zero (incremented up with minor success). I understand that the injectors kick in around 2500 rpm but I don't know how that effect enleanment or if it is worth trying to modify this table any more.

Thoughts?
 
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Old 05-06-2007, 11:26 AM
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Default RE: SERT Tuning Experts - Up for the challenge

Decel enleanment only affects throttle roll off.

In VE you can manipulate up and down in the 0 and 2% columns as well as spark where the injectors turn back on.

You don't mention your combination/pipes.

The key is to make it either burn before the pipe or make it non combustible in the pipe.
 
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Old 05-06-2007, 02:39 PM
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Default RE: SERT Tuning Experts - Up for the challenge

I just have RhineHart True Duals and a Big Sucker.

Also, this even does not occur with any throttle left; meaning that it happens just at zero. I am at that for at least .5 second before it occurs.

I don't really want to mess anything up on the mapping as I have it tuned to almost perfection with the exception of this annoying pop that occurs every so often. Maybe it is not even possible to tune it out...
 
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