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mo_spec
PostPosted: Thu Mar 22, 2012 9:10 pm 
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Joined: Sun Oct 14, 2007 5:07 pm
Posts: 23
So as of the end of last season we have been noticing the VSS signal has been sporadic. The car is on s300 and we use the pwm boost by gear. So when the vss signal drops say 30 mph that will put the PWM % at a lower % because its sampling from the next gear down. Timing and boost are affected as well as any gear comps I have set up.

Here is the set up:

92 civic
S300 v1 in a p28
built sleeved gsr
liberty trans
24.5 tire
850-900 hp


Any one seen this before? any suggestions?


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PFC hatch 9.19@165 "True Street" trim


Last edited by mo_spec on Fri Mar 23, 2012 1:23 pm, edited 1 time in total.

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Spunkster
PostPosted: Fri Mar 23, 2012 9:17 am 
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Joined: Fri Sep 20, 2002 5:06 pm
Posts: 11080
Location: Hondata
Please don't just post screen shots as it makes it very dificult to help with any issues. Please follow the posting instructions at viewtopic.php?f=19&t=3772
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mo_spec
PostPosted: Fri Mar 23, 2012 1:24 pm 
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Posts: 23
All fixed sorry about that.

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Spunkster
PostPosted: Fri Mar 23, 2012 4:49 pm 
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This looks like you are getting wheel spin and then the VSS will read lower once you get traction.
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mo_spec
PostPosted: Fri Mar 23, 2012 5:18 pm 
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I don't think it's wheel spin. The car has a respectable short track, especially for a small tire. Also the issue is occurring in 4th gear, and I doubt it's spinning at 160mph

1.50 60ft
4.1 330ft
6.1 @ 124 at the 1/8 mile

Is it possible that there could be electrical interference causing this? I am thinking of making a separate harness for the vss to isolate the signal wire....

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PFC hatch 9.19@165 "True Street" trim
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mo_spec
PostPosted: Mon Mar 26, 2012 10:05 am 
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Posts: 23
Bump.. I feel like some one else has had to have run into this before...

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hondatechpr
PostPosted: Thu Apr 05, 2012 4:32 am 
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Joined: Thu Feb 28, 2008 6:54 am
Posts: 27
Location: Guayama P.R.
Check the speed sensor or the plug, sometimes get loose on the pins
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