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Throttle hang and the Idle Stepper Table

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Old Feb 11, 2010, 01:16 PM
  #496  
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Just a quick question Im seeing a throttle hang at 1500rpms after coming to a stop. Im using phenem's prepatched 9653 live map (maf) version.

Does anyone know have any the idle hang fixes been made to it?
Old Feb 11, 2010, 05:28 PM
  #497  
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Thanks, I had not understand the ISCV Demand RPM adders, but I least I know what to look for.

Last edited by waynea; Feb 11, 2010 at 10:59 PM.
Old Feb 12, 2010, 07:26 AM
  #498  
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Originally Posted by Appauldd
Adjust your #1 and #3 decel fuel cut delay tables. Make the values smaller to decrease the delay. This should cure the throttle hang.

My settings....no throttle hang here.

# 1
7
30
40
50
55
55
55

# 3
32
51
65
71
74
76
76

#2 & #4
7
36
50
56
59
61
61
I just did this and also zeroing out my RPM adder tables on my Evo8 with the 96530706 ROM and it has solved the throttle hang problem using the stock "Idler Stepper Look up Table"

thx for the info.

The only problem I have now is that every now and again when I turn a corner at low speed, like you do in a parking lot, the car will sometimes die.
And very now and again, when coming to a stop at the traffic lights.

Any idea what might be causing the problem?

Thx

Last edited by SeanV; Feb 12, 2010 at 07:43 AM.
Old Feb 12, 2010, 07:50 AM
  #499  
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you may need to slightly raise the last 2 values of the ISCV tables. Raise them a couple points....all of the tables.

In addition, if you have cams, you might want to raise you base idle settings a little.
Old Dec 4, 2010, 07:30 PM
  #500  
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hey guys i have a question, i am using tephra's v7 88590715 and i do not see the decel fuel cut tables and i was looking at my idle stepper table and notices that the x and y axis do not match up to what i saw in Merlin's tuning guide. one side is unknown units and the other is coolant temps but it seems that the values are off scaled.

i also have throttle hang and its annoying at times especially when trying to stop and it feels like the brakes are slippery.

is there something i can do about the scaling in the stepper table?

BTW i have the S2 mivec cams and idle is set to 1031
Old Dec 5, 2010, 04:06 PM
  #501  
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bump!
Old Jan 23, 2011, 08:28 AM
  #502  
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Bump to bring this thread back to life
Old Jan 24, 2011, 09:28 AM
  #503  
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Originally Posted by vmrevo9
hey guys i have a question, i am using tephra's v7 88590715 and i do not see the decel fuel cut tables.
Any feed back here?
Old Jan 24, 2011, 09:52 AM
  #504  
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Originally Posted by SWOLN
Any feed back here?
They are not part of any official xmls, and additionally, I recently checked out the tables and they are not decel fuel cut tables. They are ISCV demand tables. I'm working on making a real decel fuel cut option available.
Old Jan 24, 2011, 10:32 AM
  #505  
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Originally Posted by mrfred
They are not part of any official xmls, and additionally, I recently checked out the tables and they are not decel fuel cut tables. They are ISCV demand tables. I'm working on making a real decel fuel cut option available.
Thanks for the reply mrfred, I'll keep my eyes peeled for your decel fuel cut information.
Old Jan 30, 2011, 02:42 PM
  #506  
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thanks for chiming back in mrfred. any progress on those that cut decel?
Old Jan 30, 2011, 06:18 PM
  #507  
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Originally Posted by Jersey Dino
thanks for chiming back in mrfred. any progress on those that cut decel?
Not yet. Currently working on DMA for 88590015 tephra V7.
Old Feb 12, 2011, 11:34 PM
  #508  
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bump for any updates to this thread?I know mrfred is busy...
Old Mar 26, 2011, 07:29 PM
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Bump this anyone really come up with an answer to fix this 06 evo having the dreaded rpm jump up during hard acceleration and of course full boost
Old Mar 26, 2011, 07:38 PM
  #510  
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Originally Posted by evo8nyc
Bump this anyone really come up with an answer to fix this 06 evo having the dreaded rpm jump up during hard acceleration and of course full boost
Answers are all though this thread. Theres even a good example 10 post up....


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