Thread: What Is YOUR Top Speed?
View Single Post
Old Aug 10, 2009 | 08:10 AM
  #41 (permalink)  
RMADERMAN's Avatar
RMADERMAN
Senior Member
Joined: Jan 2007
Posts: 2,116
Likes: 0
From: Miami, Florida
Default Re: What Is YOUR Top Speed?
Originally Posted by dwightdmagee
oledoc2u, I don't know much about this, so maybe you can help me out.

I regularly run my roaster limited at 150 along Alligator Alley, but it always tops out around 149-153. This is not due to lack of pedal, it seems, but pure HP. Is it true that the XF is wired shut, or governed, at that speed?

If so, how is it accomplished? Fuel starvation? ... or ignition retardation? How do you 'un-wire' your SRT6 to do better with a tune? Also, I understand that manufactures will limit top speeds based upon OEM tire speed-ratings. True or no? Some say the XF may tend to 'float' somewhat at high speed. Mine feels firm and smooth as you'd ask (little hard on the rag top), but can this sensation be associated with tire expansion? I'm running a decent ultra-high performance summer Bridgestone.
Thanks for any insight.
Just for inquiring minds. Alligator Alley (I-75)is a 70 mile straight-away across the everglades in south Florida for those in diferent parts of the country. That is where I first hit that 150 + mph. It is smooth. Just have to watch for the Indians. They catch you at 150 and they just feed you to the gators. But, you dont get any points.

I hit 164 on the turnpike just before I 75. And that was confirmed by the GPS. I also have the Bridgestone tires that are y/Z rated. That was after the SRT was tuned by LET.
 
Reply
0