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Yay! Finally got my Murf Stage "1.5" kit.

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Old 05-06-2011 | 12:23 PM
  #16  
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Very cool Paul can't wait to hear that beast runnin around town. Let me know if you need a hand it's supposed to be a great weekend around here.
Old 05-06-2011 | 12:56 PM
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My 85 asked the other night coming home Daddy would you put one of these on me .
Old 05-06-2011 | 04:28 PM
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I'm looking forward to the day when I can add a bit of boost to my car. Currently I think a LSD is in order.
Old 05-06-2011 | 04:43 PM
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Originally Posted by Jon B.
I'm looking forward to the day when I can add a bit of boost to my car. Currently I think a LSD is in order.
You don't need LSD with a supercharger. That way when you shred one tire, you can rotate it to the other side
Old 05-06-2011 | 05:07 PM
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lol
Old 05-06-2011 | 05:16 PM
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Originally Posted by Hacker-Pschorr
You don't need LSD with a supercharger. That way when you shred one tire, you can rotate it to the other side
Yeah, but powerslides are FUN!
Old 05-06-2011 | 05:29 PM
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Originally Posted by Tim Murphy
Hey Mac, your new torque tube showed up from 928int'l. I should have her back up and running verry soon.
I just remembered, I have to wash my hair this weekend......
Old 05-06-2011 | 06:47 PM
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if setup = 11psi, with actual @ 6200ft = 8psi, what happens when you come down in elevation? Perhaps more focused, how do you control the boost when you don't need the altitude compensation (closer to sea level)?
Old 05-06-2011 | 07:01 PM
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Originally Posted by anonymousagain
if setup = 11psi, with actual @ 6200ft = 8psi, what happens when you come down in elevation? Perhaps more focused, how do you control the boost when you don't need the altitude compensation (closer to sea level)?
Wisconsin's a lot lower than Colorado Springs. The fuel and spark maps were designed with lower elevations in mind. A large part of the idea, though, is that the single air inlet will restrict max boost at higher ambient pressures.
Old 05-06-2011 | 09:13 PM
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I know you said it's a custom thing for you from Tim, but isn't that what the "new" Stage 1 is supposed to be? At least the FMU deletion sounds like something I read on here before. I'm REALLY wondering if I should go with a Stage 1 (also no FMU) or just jump in with both feet and be done with it.
Old 05-06-2011 | 09:23 PM
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Originally Posted by SQLGuy
Wisconsin's a lot lower than Colorado Springs. The fuel and spark maps were designed with lower elevations in mind. A large part of the idea, though, is that the single air inlet will restrict max boost at higher ambient pressures.
Ahh so they were fattened up for some extra safety?
Old 05-06-2011 | 09:44 PM
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Originally Posted by Hacker-Pschorr
I just remembered, I have to wash my hair this weekend......
That shouldn't take long
Old 05-06-2011 | 09:57 PM
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Originally Posted by Hacker-Pschorr
I just remembered, I have to wash my hair this weekend......
Do they make a Chia Hack?
http://www.youtube.com/watch?v=3_zwx...eature=related
Old 05-06-2011 | 10:01 PM
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Originally Posted by Imo000
Ahh so they were fattened up for some extra safety?
Well, yes, and no. The maps are based on mass flow. Tim should be filling in the whole map. The top parts of it are going to be the highest mass flow of air, which means WOT at high load and high boost.

WOT is WOT
Load is based largely on the dyno settings
Boost is based on RPM and air density

Since Wisconsin is much closer to sea level than Colorado Springs, air density for Tim will be higher than air density here, and the blower will have more air it can compress and shove into the engine. The initial absolute pressure will also be higher, which, combined with the extra boost, will result in higher mass flow than at the same throttle position, RPM, and load in Colorado Springs. In other words, in Wisconsin, all out, the cursor will run across the map higher up than it will in Colorado Springs.

Normally, when I am driving here, even at WOT and under full load, I won't be using the top cells in the map, but they will be there for me if and when I drive to lower elevations (like Sharktoberfest, maybe).

If I were to increase the boost capability of the system, like by adding a second inlet, then I might get to the top of the map while in Colorado Springs, but then I might be off the map, and in trouble, if I drove to sea level.
Old 05-06-2011 | 10:02 PM
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Originally Posted by Jon B.
I know you said it's a custom thing for you from Tim, but isn't that what the "new" Stage 1 is supposed to be? At least the FMU deletion sounds like something I read on here before. I'm REALLY wondering if I should go with a Stage 1 (also no FMU) or just jump in with both feet and be done with it.
Yes, all of the stage-1 kits now come with 42lb injectors, custom fuel, and custom ignition chips. No more FMU. Besides being a technically better and more accurate way to control fueling, it ensures that people aren't using old fuel injectors that may or may not be working as well as they should.

The stage-1 kit is intended to be easy to upgrade to stage-3, if someone wanted to do that in the future. The new stage-1 makes upgrading even easier, since you already have the 42lb injectors with the stage-1. You also don't end up buying an FMU and the associated plumbing and fittings that you then don't have any use for when going to the stage-3. It does cost a little more to get the stage-1 and then later upgrade to the stage-3 than it would to go with the stage-3 initially though.


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