Aftermarkey MAF popping warning lights - Page 2 - Taurus Car Club of America : Ford Taurus Forum
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post #11 of 16 (permalink) Old 04-02-2019, 07:11 AM
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You need to determine the most restrictive point in the engine system and that may not be the throttle body. Also airflow tuning based on intake and exhaust runner length is important. Just like tuning an audio speaker with different port lengths and diameters. Do extensive research before you listen to a source that has dollars to gain from products they sell. Also believe that the OEM has done a lot to make their engines as efficient as they reasonably can. Any reduction in the pinch point of air/exhaust flow reduces the horsepower the engine needs to function and creates better gas mileage.
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post #12 of 16 (permalink) Old 04-02-2019, 07:12 AM
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Airflow into the engine is determined by RPM and volumetric efficiency (VE) at a given RPM, and any restrictions in the intake tract before the air gets to the intake ports on the heads, and any exhaust system restrictions. Modern engines have VERY well designed intake systems (and to a great extent exhaust systems) that provide VERY little restriction in air flow for a stock engine. Leaving the engine 100% stock and "improving" the intake system with aftermarket parts will do identically ZERO to improve performance, MPG or anything else other than possibly increase intake noise.

Throw in a set of high lift longer duration cams, port the heads, bigger valves (probably not possible on a Cyclone), 3" catless exhaust with straight thru mufflers and mandrel bent pipes, and a custom PCM tune, and only then start thinking about improving the intake system.

05 Taurus SEL Duratec - my daily driver
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95 Taurus GL Vulcan winter car
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post #13 of 16 (permalink) Old 04-02-2019, 07:34 AM
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Quote:
Originally Posted by Jeff K View Post
Airflow into the engine is determined by RPM and volumetric efficiency (VE) at a given RPM, and any restrictions in the intake tract before the air gets to the intake ports on the heads, and any exhaust system restrictions. Modern engines have VERY well designed intake systems (and to a great extent exhaust systems) that provide VERY little restriction in air flow for a stock engine. Leaving the engine 100% stock and "improving" the intake system with aftermarket parts will do identically ZERO to improve performance, MPG or anything else other than possibly increase intake noise.

Throw in a set of high lift longer duration cams, port the heads, bigger valves (probably not possible on a Cyclone), 3" catless exhaust with straight thru mufflers and mandrel bent pipes, and a custom PCM tune, and only then start thinking about improving the intake system.
Oh the good old days. I had 390 =~6.5L with 2 bbl carb had 1.1" venture. So imagine two of those small holes compared to today's 177cubic inch engine. The carb needed those small air holes to meter the gas. Of course one could have a 4bbl but those big second holes were like pouring raw gas down a rabbit hole.
Good old days SUCK!
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post #14 of 16 (permalink) Old 04-02-2019, 10:32 AM
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^^^^ Yup, the "good" old days...... 67 Fairlane GTA 390ci 4 barrel 3 speed auto - 10 mpg city on a good day, 14 highway. 66 Olds Jetstar 430ci 3 speed auto 4 barrel - few MPG worse than the Fairlane GTA, 71 Tbird 429ci 3 speed auto, 4 barrel - MPG around the same as the Olds. Great cars.... they could pass everything but a gas station.
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05 Taurus SEL Duratec - my daily driver
04 Taurus SES Duratec - wifes car - TOTALED
06 Taurus SE Vulcan - wifes new ride
95 Taurus GL Vulcan winter car
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post #15 of 16 (permalink) Old 04-02-2019, 04:36 PM
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SILLY BOY!!!
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post #16 of 16 (permalink) Old 04-02-2019, 07:23 PM
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Originally Posted by Jeff K View Post
^^^^ Yup, the "good" old days...... 67 Fairlane GTA 390ci 4 barrel 3 speed auto - 10 mpg city on a good day, 14 highway. 66 Olds Jetstar 430ci 3 speed auto 4 barrel - few MPG worse than the Fairlane GTA, 71 Tbird 429ci 3 speed auto, 4 barrel - MPG around the same as the Olds. Great cars.... they could pass everything but a gas station.
When I was in high school, we had a Mercury as I remember 368ci with high compression and 4 bbl and high test gas. ~300hp ~400 #ft torque. Downside 2 speed auto in auto mode (2-3)and funky push button select. You could get gear 1 with a manual push button but had to shift back to get out of gear 1. Then by ~1970 cars got very heavy for safety. My '72 Colony Park ~5500# by scale weight. My favorite car to drive: 1995 Tbird with 4.6. I think it was a year with independent rear suspension. I drove it about 500 miles of interstate straight through for someone else.
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