There's been a lot of car side discussions while people and my friends check out my new ride. I just wanted to post some of them in hopes you can help decide which ones are myths and/or facts.
1. All new cars (such as my 07 Mustang) have computer processors that keeps track of your driving habits, so it can adjust accordingly based on historical data. Therefore if you baby your car too much, it will feel underpowered when you get on it.
2. Carbon and other fuel combustion byproducts can build up on the plugs, cats, valves, etc. overtime which is why it is a healthy practice to rev up your engine hard every once in a while to help clear it up.
3. If I keep the boost on my Saleen supercharger on or below zero, I am using enigne power alone without the aid of the forced air from the SC. This saves gas during acceleration.
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My Steed: 2007 GT Convertible • 5 speed • 447rwhp & 435rwt 8lbs boost from Saleen Supercharger • C&L Cold Air Intake • SCT tuned • H&R Lowered Race Springs • JBA short headers • Bassani X-Pipe • Mac mufflers • 18" FR500 chrome wheels • 275/40 rear tires • 39 lbs inj • slotted/drilled front/rear rotors ░▒▓█ Near stock exterior for more effect! █▓▒░ My hog: 07 Yamaha Midnight Warrior 1700cc • My bull: 02 Taurus
Number 1 is true, the PCM will learn your driving habits. If you drive like grandma and never drive over 40 mph and never go above 3000 rpm's, then the PCM will optimize the timing, fuel curves, etc. to make that type of driving as smooth as possible and to where it will get the best gas mileage at those rpm's and speeds. Its all about emissions though, reducing the most amount of by-products at how ever you drive the car. Its not permanent though, if you change the way you drive for long enough, the PCM will re-learn that style of driving.
Number 2 I have heard of, don't know if its really true. I think its more true with older vehicles then new ones. I know cars in the 80's and 90's that have EGR are usually really dirty inside and built up with carbon.
Number 3 is mostly true. If you stay out of the boost, the PCM doesn't have to add the necessary fuel to accommodate the large amount of air coming in. Less fuel, better mpg.
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Jesse Berger 90 LX, Previous 4 cyl. (Decommissioned, 351W on the way)
H/C/I+Bolt Ons
Best ET: 12.54@106 mph 2001 V6 5 Speed Daily Driver Windstar Intake, Dual Exhuast, CAI, Headers
Best ET: 15.6@88 mph (stock trim)
That's pretty much what I was going to say verbatim, Stalkerstang.
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'05 Sonic Blue GT w/ '07 V8 engine, 5-sp, IUP, Beige leather interior, nothing else -
just the way I wanted it. (1 of 113)
OK, so I've added a few things to it. Check my Profile - too many to list here.
I read in the manual that the computer records driving actions, in case of an accident law enforcement can better understand the actions preceding the incident. Apparently they need your consent to gain access to this data but...
Carbon build up on the plugs and all that is by design from "Oil blow by", an oil separator/catch can will remedy that.
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2007 GT Convertible Premium 5 spd || FRPP HotRod Cams || Full Steeda Suspension w D-Specs || Brembo GT500 || Steeda CAI & Delete plates|| Flowmaster || Magnaflow catted X Pipe || MGW Shifter || Tuned by RealSpeed ||
I have no evidence to base this upon, but wouldn't a supercharger that isn't supercharging be robbing the engine of horsepower(since it's still turning the pulley and the blower)? What are you comparing the s/c-with-no-boost against?
I have no evidence to base this upon, but wouldn't a supercharger that isn't supercharging be robbing the engine of horsepower(since it's still turning the pulley and the blower)? What are you comparing the s/c-with-no-boost against?
Just by looking at the boost gauge. I guess you are right, if it's not giving boost, it is making the engine work harder. Then again, how good is that Saleen S/C bypass? Is that a complete bypass until boost gauge goes over 0 lbs? You can imagine how this topic can take several minutes with a bunch of car guys that don't have a lot of technical knowhow.
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My Steed: 2007 GT Convertible • 5 speed • 447rwhp & 435rwt 8lbs boost from Saleen Supercharger • C&L Cold Air Intake • SCT tuned • H&R Lowered Race Springs • JBA short headers • Bassani X-Pipe • Mac mufflers • 18" FR500 chrome wheels • 275/40 rear tires • 39 lbs inj • slotted/drilled front/rear rotors ░▒▓█ Near stock exterior for more effect! █▓▒░ My hog: 07 Yamaha Midnight Warrior 1700cc • My bull: 02 Taurus
I read in the manual that the computer records driving actions, in case of an accident law enforcement can better understand the actions preceding the incident. Apparently they need your consent to gain access to this data but...
True, but that's for a different application. Is that same data being used by the processor to maximize fuel mileage, performance, etc...
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My Steed: 2007 GT Convertible • 5 speed • 447rwhp & 435rwt 8lbs boost from Saleen Supercharger • C&L Cold Air Intake • SCT tuned • H&R Lowered Race Springs • JBA short headers • Bassani X-Pipe • Mac mufflers • 18" FR500 chrome wheels • 275/40 rear tires • 39 lbs inj • slotted/drilled front/rear rotors ░▒▓█ Near stock exterior for more effect! █▓▒░ My hog: 07 Yamaha Midnight Warrior 1700cc • My bull: 02 Taurus
You can also reset the PCM by disconecting the battery for about 1/2 hour.
Quote:
Originally Posted by RedMosesSC
I read in the manual that the computer records driving actions, in case of an accident law enforcement can better understand the actions preceding the incident. Apparently they need your consent to gain access to this data but...
Carbon build up on the plugs and all that is by design from "Oil blow by", an oil separator/catch can will remedy that.
They can get the info from a court order. Usually if the accident is fatal.
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2006 GT Tungsten Grey 5 spd, Xcal2/Pipeline CAI, Powerhouse tune. Spoiler delete. Front Speakers:Infinity 6812CF;Blaupunkt GTc652. Rear:Infinity Kappa 682.7CF. H/U:Alpine CDA-9885. Alpine MRP-F250 amp. Sequentials. President of the Splash guard registry. On Deck: Motoblue UDP's.
You can imagine how this topic can take several minutes with a bunch of car guys that don't have a lot of technical knowhow.
Speak for yourself, lol
The accident data is more or less a data logger. But the PCM uses that data to form its strategy for changing the tune of the vehicle to accomodate your driving style.
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Jesse Berger 90 LX, Previous 4 cyl. (Decommissioned, 351W on the way)
H/C/I+Bolt Ons
Best ET: 12.54@106 mph 2001 V6 5 Speed Daily Driver Windstar Intake, Dual Exhuast, CAI, Headers
Best ET: 15.6@88 mph (stock trim)
They are much more advanced now, I can't give you an exact year, but most OBDII vehicles have this capability to adjust to driving styles...
It goes pretty in depth on how it does it. The PCM monitors short term and long term fuel trims, TPS, engine load, I mean I could go on forever.... But especially now since most cars have electronic throttle control, the control the PCM actually has over the car is pretty amazing (sometimes scary).
Even more so in the explorers and expeditions that have RSC, and the bigger cars like the crown vics and mercury's that have electronic steering.
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Jesse Berger 90 LX, Previous 4 cyl. (Decommissioned, 351W on the way)
H/C/I+Bolt Ons
Best ET: 12.54@106 mph 2001 V6 5 Speed Daily Driver Windstar Intake, Dual Exhuast, CAI, Headers
Best ET: 15.6@88 mph (stock trim)
thats why i love my procharger i was driving it with my new street tune and i got 20mpg on the street and 27 on the high way lower compression motor and centrifugal blower
Just by looking at the boost gauge. I guess you are right, if it's not giving boost, it is making the engine work harder. Then again, how good is that Saleen S/C bypass? Is that a complete bypass until boost gauge goes over 0 lbs? You can imagine how this topic can take several minutes with a bunch of car guys that don't have a lot of technical knowhow.
granted your not always in the boost mode, you are still getting air feed to the engine better than a n/a one.. mine runs and sounds good through all modes.
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2005 Mustang GT, p1sc1 procharger w/3 core inter cooler, 10 psi boost,, 39# fuel injectors, kook long tube headers, high flow cats, x pipe, magna flow mufflers, che lca, anti squat brackets, che tubular lateral stiffener bar, 1 piece aluminum drive shaft, che engine torque limiters, hurst shifter, A pillar boost and oil press gauges. Steeda lowering spring kit. CM delete plates. New eaton posi rear end(600rwhp), 3.73 gears. MAfia maf sensor, 470rwhp, 423ft# torque.
Mustang myths or facts? 
effect! █▓▒░
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lower compression motor and centrifugal blower 
