the new cars need to pass smog tests the preformance chips say there for off road or they say thease may alter emissions
keep the old chip to pass youre smog test
2007-07-17 16:16:11
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answer #1
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answered by mobile auto repair (mr fix it) 7
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Yes, gas mileage. Car manufacturers have a gas mileage figure they have to meet which is an average across their entire product line. If some model is more of a gas hog, they'd have to make another model even more frugal than it is. It's a tough balancing act.
Also pollution. More performance means more horsepower, which means burning more gasoline, which means more combustion products. In other words, more pollution. They might not pass the EPA tests, especially in California, which is the largest car market.
2007-07-17 15:10:03
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answer #2
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answered by OR1234 7
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The stock car has a chip its programmed to take into account many factors, power, economy, emissions, reliability. Usually you can use a more aggressive timing and get more power and a bit more gas mileage, you can fool around with the fuel delivery and get more power but worse mileage,etc, the factory chip is probably the best compromise of all the different factors.
2007-07-17 15:09:17
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answer #3
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answered by cimra 7
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It takes a team of a hundred engineers several years to perfect the design of a car. That design is a compromise between many factors such as performance, economy, etc., so that the final product will benefit the most customers that buy the car. In short, not everybody that buys the same car wants the same things out of it as you.
2007-07-17 15:08:37
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answer #4
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answered by Anonymous
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because they don't always do what they say they will,most of the time the factory builds a car to run good but get as much mileage as possible,adding a performance chip to it will rob it of something,it don't always do as it says it will,to get speed from a car you have to use more gas,and regardless of what they say,the chip will make them run better,but to gain on one thing you have to loose on another,you cant have 40 miles to the gallon and a car that will run with any other sports car on the road,this is why the factory doesn't use them,they build a car to run to their specs ,not to be used as a race car,anytime you gain on one thing your loosing on another,good luck with it hope this helps.
2007-07-17 15:07:25
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answer #5
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answered by dodge man 7
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i dont know where you found a chip for under 20 bux but thats not a real chip if your looking on ebay those are resistors that trick you car into thinking its getting colder air than it really is thats why most of then hook to your AIT sensor a real chip plugs in to the cars computer and remaps timming fuel curves shift points ect
2007-07-17 15:40:11
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answer #6
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answered by Brianna R 2
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If there wasn't a downside the manufacturer would use them. They can decrease the reliability of the engine. If the car is under warranty, and you have a problem, the dealer could void your warranty.
2007-07-17 15:06:05
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answer #7
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answered by mustanger 7
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to place it merely, no ecu is going to be properly easily worth the money in terms of the overall performance you earnings from it. The E46 is between the commonest German autos to alter, possibly look into compelled induction.
2016-10-19 05:39:50
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answer #8
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answered by gayman 4
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the automakers have to design their systems to handle all driving regimes. the automakers also need to build in a safety margin to prevent engine damage due to advance timing and lean fuel mixtures.
2007-07-17 15:22:25
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answer #9
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answered by richard b 6
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lawsuits and lawyers
2007-07-17 15:16:15
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answer #10
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answered by cheyenne95129 3
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