2 step rev limiter; know of one? - Page 2 - MustangForums.com

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2 step rev limiter; know of one?

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Old 11-07-2008, 09:13 PM
  #11  
Skarkull
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Originally Posted by Hufenstang View Post
yea the MSD 2 step really screwed up my cats... had to get an O/R pipe
Please explain
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Old 11-07-2008, 10:11 PM
  #12  
Hufenstang
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From how i understand it, it is pulling spark back and letting the extra fuel go into the cats and burn it up. Depending how much it lets in the cats can only handle so much and causes them to crumble eventually, msd even has a warning on their website about this i believe.
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Old 11-07-2008, 10:23 PM
  #13  
Texotic
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you end up building up fuel. that's why sometimes when people are using WOT boxes, they shoot flames. it's the extra fuel igniting.
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Old 11-08-2008, 08:13 AM
  #14  
forensicsteve
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We also use the MSD 2 step. You can hear it working in the quick vid. Plugs were in bad shape and car actually died at the line. You can hear the camero purge nitrous, then Lance start up the mustang and have some difficulty keeping it going, then the typical t-t-t-t-t-t of the 2 step. Promise....we'll have a new set of HTOs for next time out and a new racetune with more spark.

http://s149.photobucket.com/albums/s...nt=Cap0024.flv

Last edited by forensicsteve; 11-08-2008 at 08:16 AM.
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Old 11-08-2008, 11:17 AM
  #15  
Simon1
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Originally Posted by Hufenstang View Post
From how i understand it, it is pulling spark back and letting the extra fuel go into the cats and burn it up. Depending how much it lets in the cats can only handle so much and causes them to crumble eventually, msd even has a warning on their website about this i believe.

The first time mine worked with the first unit a huge cloud of smoke and nastiness plumed out of my tail pipe. Then I got the cats taken care of.
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Old 11-08-2008, 11:19 AM
  #16  
Simon1
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Originally Posted by forensicsteve View Post
We also use the MSD 2 step. You can hear it working in the quick vid. Plugs were in bad shape and car actually died at the line. You can hear the camero purge nitrous, then Lance start up the mustang and have some difficulty keeping it going, then the typical t-t-t-t-t-t of the 2 step. Promise....we'll have a new set of HTOs for next time out and a new racetune with more spark.

http://s149.photobucket.com/albums/s...nt=Cap0024.flv
Why are you going through plugs? I know your
around 22 degrees of timing with big boost but
is there another reason?

Should I be checking my plugs after each use
of the two step?

I'm thinking no because I only use the 2 step
for a few seconds and then take off at WOT.
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