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  1. T

    Why it is hard to produce power in the Rockies!

    I put the 3.07 gears in along with 10lb pulley, car runs even more rich than before! What I did notice is that the ambient temp was 20 degrees F hotter the second time around. I really think that the combination of altitude and Air Density/temperature are really messing with the AFR. This is...
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    Paxton FMU Disk question

    Anyone know the 2 sizes that come with the Paxton kit? 10:1 and 8:1? Also, does anyone know what the actual sizes of the disks are? I have a disk in my FMU that is 1 7/8 inches in diameter and I need to go leaner as my fuel is pegging off the dyno scale (rich). Dan at DC is helping me with this...
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    XVIPERS Michael Mike Nouri difficult contact challenge

    Same experience for me. He sent me a Gen 4 rear end and didn't ask for payment first. My Viper Tech confirmed everything he told me about the part upon inspection. I still owe him for the part and have been texting him to pay him and no response. I have never had that happen where I WANT to pay...
  4. T

    3.21 Gear For Gen IV Rear End

    I just had 3.55 and it was too short (for me), 3.07 is a little too tall. Man, 3.21 would be perfect.
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    3.21 Gear For Gen IV Rear End

    Anyone know where I can find one?
  6. T

    T56 Upgrade Question

    I was premature, gonna ride out the 3.07 with the new pulley and see how I like it before spending more $$.
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    T56 Upgrade Question

    Guys, Any ideas/experience with changing 5th (.80) and 6th (.63) gear ratios on T56? I see DC Performance sells the gears for about $600, but what am I looking at in terms of labor (hours)? Also, confirming I need BG30 output shaft to go along with the new gearset? Thx
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    BEST way to dry the Viper

    +1 on these towels, great for drying the car.
  9. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    I think it might be too lean as well, but I am wondering if that is from lack of boost? No boost, no fuel? It looks like the fuel curve is programmed into the ECU to match boost curve. I talked to Dan about it being lean and he did not express concern about it, he saw the dyno Sheet too. I am...
  10. T

    How do I avoid swirl marks in the paint?

    I bought the products; Porter Cable, Adams color coded pads, Meguiars 105 and 205, Zaino blonde microfiber cloths, Adam's waffle cloths, Meguiars Synthetic Sealant wax, Adam's superplush towels, Grit Guards and washing pads, Clay bar, detail spray. Man, all I can tell you is that my paint was...
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    I have the dreaded "Whine" from the driveline

    Looked on the forum, saw a ton of posts where the conditions of the whine were like mine, it is barely audible but I can hear it, sounds like a radiator fan running. Goes away when I depress the clutch (sounds like it is powering down and then gone) and then comes back gradually when I engage...
  12. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    I told Dan on the phone that I am either going to leave the car as is, or put on the 10lb pulley, dyno it, send the dyno sheet to Dan and get a custom tune from DC to help smooth out the A/F and then call it a day. Oh, and never drive the car to sea level unless I put the 8lb pulley back in. : )
  13. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Question, which comes first? the Fuel or the Boost? Does the computer look at the boost created and then raise the fuel based on it? Or is the fuel curve mapped against expected boost and will dump fuel regardless of the actual boost created? I have the Paxton VCU. Also, looking at my dyno...
  14. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Dan said that putting the 10pm pulley on should be okay as long as I don't go back to sea level. I can always put the 8 lb back on if things look bad on A/F. I am leaving quite a bit of power on the table up here, approx 125+ HP. The car is set up to handle 8lbs, I have to compensate to bring...
  15. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Going to go to the 10lbs Pulley on the Paxton. My theory is the car is tuned for 8lbs of boost, but here at altitude I only get 5.5 lbs, so the car is pumping the right amount of fuel for 8 lbs, not 5. That is my theory anyway. Going to throw on new Harmonic damper, crank seal and then pin the...
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    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Dan, File sent to your email address today. Tyler
  17. T

    Why it is hard to produce power in the Rockies!

    Gonna stick my gen 4 rear end on soon and make another run on the dyno with 3.07 gears. I think I need to put on the ATI dampener on there as well. I like the power of the car now, it is more than enough for the street, just got to get the fuel system worked out and I'm good! True, I am leaving...
  18. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Dan, thanks! What specifically do you need?, I will ask the tuner for it on Monday.
  19. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    The car is tuned for 8 lbs. Boost but is running 5 lbs at altitude. Think that has anything to do with it?
  20. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Any recommendations on replacing the Paxton FMU unit? I just need something reliable, no plans on going crazy with the HP.
  21. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    I sent him a PM in this board.
  22. T

    A/F dips real low between 5000 and 5500 RPM, any ideas?

    Forum, I ran the car on a dynojet this morning and noticed that between 5000 and 5500 RPM the A/F ratio dipped dramatically and correspondingly my HP and TQ line dips in the same spot. I have a Paxton S/C on a 2006 coupe and I am at altitude in Denver. Any ideas on how to correct this? I am...
  23. T

    Why it is hard to produce power in the Rockies!

    Coloviper, Jsut went to see Eddie and my numbers were: 5.21 PSI boost @5500 RPM Corrected sea level power 613.40 Corrected sea level torque 590.74 I think the altitude # were 495 HP and 478 TQ The car is running really rich as I suspected and running lower than 8lbs boost as we both...
  24. T

    Many RT's On Ebay...Prices Still Appear to Be Down

    I think everyone needs to keep something in mind here. The Viper IS American muscle. There will always be a market for that. Given the limited number of them world wide and their rarity on the road (I still have only seen 2 Vipers in 8+ years living in CO on the road), fluctuations in price will...
  25. T

    Why it is hard to produce power in the Rockies!

    I have an 06' Coupe with Paxton on it and 3.55 gears. I am planning on going to Gen 4 rear end with 3.07 i na couple of weeks. I run the stock settings on the Paxton and at sea level it dynoed at 660 to the wheels. If you would like to meet up and feel the difference with the blower, I am in...

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