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WILL NOT LET POST LINK TOO FUNNY Search aero turbine exhaust mpg chart
on google
I no longer have my IRS mandated log book( sold the business), but I used a 1990 5.0 Lincoln town car for business putting about 40,000/year on it. Just by installing 225 75 15 tires on the rear in place of the stock 205 70 15 and installing a 2" dual exhaust( in place of single) with Police issue "h" pipe , 18" magnaflow low restriction mufflers and factory tail pipes my MPG went from 19-20 to 23-24. total cost of the exhaust system $200(parts only) went from using 2000+ gals in one year to 1700 gals at $3.50 that's $1200 savings/year Speedometer was corrected for the taller tires. So mileage results were accurate.
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