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  1. Running lean and detonation

    Vacuum DECREASES (moves closer to static pressure or 0 on the gauge) as throttle increases. Therefore vacuum related issues disapate as throttle position opens. But you are telling me that at partial throttle you can have a greater chance of a vacuum leak where vacuum is closer to ambient...
  2. Running lean and detonation

    If your vacuum gauge is showing greater than 15" of Hg or more you have no vacuum leak. Most Coyote engines with stock cams run 17-19" Hg at an Idle of 750 after warmup. This is assuming that VCT is tuned correctly. If VCT strategy is creating overlap effect vacuum will be closer to static. For...
  3. Questions about getting a custom tune for Roush supercharger

    Sorry to hear you waited 3 years to do this. You'll be asking yourself after the retune why you were so overly protective. Speaking from first hand experience. Installed the Roush kit with warranty on a 13 GT and within 9 months said screw it, retuned through VMP Performance and never again...
  4. Custom tune and automatic

    Every tuner is different. I have run 3 custom tunes on my 17GT auto. To be honest my 2014 6R80 shifted perfectly after working Alex when he was at VMP Performance. This car has never shifted anything like the 14 and that is very dissappointing. My sources tell me that there is much mroe going on...
  5. Talk Me out of a Supercharger/Supercharger Suggestions

    Why does the term "Hen Pecked Wiener" come to mind after reading this? LOL!
  6. Michigan Wtb boosted mustang pref 10speed

    2017 GT premium auto 6R80 - 12,000 miles - second owner - one year run White metallic Platinum Tricoat -NAV, BU Camera, climate control, heated/cooled seats, power passenger seat, leather, and all the power stuff. 631RWHP - 727 phase 2 Roush package - VMP twin 67mm TB, ID 1050X FI's, JLT 125mm...
  7. Talk Me out of a Supercharger/Supercharger Suggestions

    Keep the shift point or rev limiter 7500 or under and enjoy. Never did OPG's and have owned 3 Coyote FI setups - 1 manual, 2 autos. Set shift points at 7300 RPM on the autos and kept off the rev limiter on the manual when into it. Centri setup. is your best bet. WARNING: The U.S. Surgeon...
  8. Another Mustang or get a BMW M340i

    By the looks of your list you will never be happy with any Mustang. Don't buy another one. Plus 1 on the ZL1
  9. Changing bolt pattern from 5x114.3 to 5x140

    It will look like shit (Unless of course you like the 1980's minitruck sheels sticking out from under the fenders look).
  10. Running lean and detonation

    I'm on my fourth FI setup. I can give you some insight from my personal experience if you wish to PM me so as to not alter any further the direction of this thread.
  11. Running lean and detonation

    Still does not explain the lean condition on both banks while driving. Put it back to stock. Sell the kit, save some money, refuse to buy the old lady her boob job for Christmas (inside joke from another website) and drop the hammer on the Edelbrock or Whipple CARB package. OR just trade in for...
  12. Running lean and detonation

    ***Goes with the terrain you live in.
  13. Running lean and detonation

    Exactly. THis is why I continue to be suspect of the TUNE and/or FUEL system and the latter only because he is seeing lean conditions throughout. I had oil migration in my PD setup. Was not heavy but present. Pulled the head unit and the instercooler/intake. Clean the crap out of both. The tip...
  14. Running lean and detonation

    ON some cars...as in some S550s? or as in "Cars" in general? "Cars" with 1000 miles on them or "cars" with 1 gizillion miles on them? Been around this a long time and short of someone damaging the knock sensors because they were incompetent donig an intake swap or PD install I;ve never cime...
  15. Running lean and detonation

    Stock COPS in general are very reliable and capable of supporting spark for applications making ton KNock sensors will pull timing falsely through outward sources that crate false knock. During the install of a typical TVS system they need to be rotated slightly so that they do not make...
  16. Running lean and detonation

    ^^^ Now that is just scary and another one of my 21 reasons why I become less impressed with the S550 platform. UPDATE _ Because I created this confusion by assumign any car built would have an in line fuel filter I contacted a friend of mine who just did an E-85 full system upgrade and he...
  17. Running lean and detonation

    Well sir, I have been wrong before but a car not having a fuel filter would be a first in my 55 years of experience. Rock Auto shows a motorcraft fuel filter in stock and listed for a 2017 Mustang GT. This link clearly shows one as well. FOrd has done some stupid things over the years and some...
  18. Running lean and detonation

    Late comer here. 1st in your earlier statement you indicated that LTFT reads 10 and STFT reads 0, That would be adpative learning correcting through LTFT to bring STFT back to or near 0. That's how it works. LTFT is a long term change that corrects STFT. As you stated once LTFT goes above 25...
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