resistor 'chip' intake mods--fact or fantasy?

[stick]

in my never ending search to get a few more mpg out of the gas guzzling love bucket, i came across the 'chip' mods for the air intake on ebay that is supposed to 'fool' the computer into adding power thus gaining hp and torque and higher gas mileage. can any of you techheads or gear freaks tell me if this is gimmick or good? it seems like it could be a joke to sell thousands with no returns and no proof of gain. has anyone used this stuff and does it work?
thanks

[frankyD]

you can trick the computer a number of ways one. They all work by modifying the voltage that the computer sees from a sensor. If you knew this particular fuel injection system well you could probably "trick" the temp sensor with the right resistance. On my old jeep wrangler you could simply remove the intake air temperature sensor and relocate it to a warmer or colder enviroment in the engine compartment. colder causes the computer to add fuel and warmer causes it to reduce fuel. You can read the temperature probe with a full scanner to see what temp. its reading in its new location. You could also replace the fuel pressure regulator with a adjustable unit, more pressure = richer fuel curve. You can trick the computer by adding resistance to the O2sensor circuit, as you add resistance the voltage the computer sees is reduced the computer sees this as slightly rich and reduces fuel to compensate. There is not a particular resistance that is ideal. The way to do it would be while monitoring with a full scanner, and not to take it to extremes. Obviously the reverse techniques could be used to add fuel to adjust for performance. Also you can often modify the throttle postion sensor signal but I'm not sure how that would work with drive by wire.

[frankyD]

p.s. I havent seen the kit but its probably bologna, unless this person actually did the research on our fuel injection system.

[falchulk]

The resistor will tell the computer to advance the timing to a constant never changinf value. This would not be good if the temp is too high and could cause detonatin. If the temp drops below this now constant, you are costing power. You never pick up much from these types of mods anyway. Not worth it.

[frankyD]

I dont mean replacing any of the sensors but put some amount of resistance in line with the sensor. It would add that amount to the amount of resistance that the sensor generates during normal operation. the voltage that computer sees would still track reality it would just be adjusted to some degree. unless you modify the oxegen sensor signal you will not see benefits to gas milage anyway because under light throttle conditions the engine bases its fueling on that signal. At full throttle you can use many of those techniques to trim fuel/air ratio for ideal performance because the computer does not rely on the 02sensor. I have more experience with increasing hp than gas mileage. The computer will continue to adjust fueling untill it sees a predetermined voltage from the 02sensor, its the only sensor you can use to manipulate fueling because of the light throttle learning on the computers part.
sometimes people replace the aftercat 02 sensors so they can run "test pipes" in wich case the computer see it as failed cats so they are replaced with a resistor to trick the computer into thinking the cats are still functioning, but the computer does not base fueling on these. You have to adjust the signal from the main 02 sensors not replace with a fixed resistance.
As far as the temp. sensor, I know relocating them to a colder engine compartment location does increase fuel enrichment full throttle but it will not under light loads due to computer learning from main 02s.
but regardless i have not seen this kit but its not likely to be beneficial.

[Tony]

I figure nissan would have added a less than 1 cent resistor to the $30K truck in order to improve performance and mpg.

However I did see a machine on ebay that claims to convert toilet paper into dollar bills.

[Squid]

Originally Posted by Tony

I figure nissan would have added a less than 1 cent resistor to the $30K truck in order to improve performance and mpg.

However I did see a machine on ebay that claims to convert toilet paper into dollar bills.

And if that doesn't work J.C. Whitney has a conversion so you can use that toilet paper to filter your oil.

Now there's some cost savings.

[frankyD]

I did not say you can improve hp and mpg at the same time but most people understand that the ideal nissan setup is a compromise of both for emmissions and longevity and that either hp or mpg can be adjusted for individually at the expense of the other variables. people have been tuning turbos systems this way since efi became commonplace. I agree I would not hack up my titan this way. although if someone spent sometime on the dyno and tracked the changes of a couple of intelligently placed variable resistor they most definatly could gain hp or mpg.

[TitanicSE]

In the Titan....Do you really feel the need for it? Your mileage is bad enough, and you have enough power to embarass fart tipped Hondas. This thing is plenty fast for a 1/2 ton truck...and MANY cars as well.

[Tony]

franky,
my comments were made re the ebay chip claims.

Squid,
It's been scientifically proven that "Charmin Ultra" absorbs 8.7 times its weight in harmful contaminates otherwise found suspended in your oil. In fact Tonka now recommends it exclusively for use on all their heavy duty truck motors, including their hardest working diesel engines.
Ironically, KFC has been quietly experimenting with it on their deep fryers with the hope of saving several million dollars annually by extending the usage life of cooking oil ten fold. Just the thought of a 10-times oil life is exciting enough! Use in donut fryers is only around the corner.

Best of all the TP does not break down when used in conjunction with those new synthetics oils recommended in cars like BMW, Mercedes and Porsche!

Get the jump on the soon-to-be mad craze for this scientific breakthrough in oil filtration systems. Sure you can get the empty canister adaptor from the pages of JCWhitney, but you can only buy the improved green dyed Charmin-Ultra (Ultra-GreenTM) from my web site (tp_chumps.ru). Or you can simply send cash money to my island in the Bahamas.

Don’t only take my word for it. Check out the various message boards abuzz with Ultra-Green. Here is my favorite.
http://www.chl.ru/forum/index.php4?gid=2

Please don’t be fooled by those counterfeit tp rolls being offered elsewhere: (http://cgi.ebay.com/ws/eBayISAPI.dll...544646647&rd=1 ).

[frankyD]

No I dont feel the need for it. The titans power is great, and Im happy with the gas mileage. I wasn't suggesting that anyone modify their titans this way.

[04CCinBrLa]

From seriousness to silliness.. makes the board fun. butt.. at the risk of being flamed for it., why hasn't someone commented on how this topic has been discussed many times and they should do a search instead of repeatedly asking about this chip over and over again? lol otherwise Frankyd knows his shirt.

[stick]

tony, squid--thanks for the indepth concern for my truck! pursuant to your recommendations i went to ebay and found an inventor who claims to have created toilet paper that you actually put IN your engine throught the oil intake. he claims that it absorbs dirt and 'undesirables' and actually cleans your oil from the inside of the motor! he said it is garanteed for the life of your truck and never needs to be replaced--so this actually sounds like a better deal then the stuff you found which only filters when the oil comes out. he said it was so new that no else had even heard of it yet but if i bid right away i could get in on the 'ground floor' of this next huge thing. you may find it hard to believe but i was the only bidder, but hey, at least i won for a mere $530, which is great considering the expense of oil changes these days!!!

frankyd--that was the best/most thorough advice of any of the other links on this subject--thanks!

[Squid]

Originally Posted by 04CCinBrLa

From seriousness to silliness.. makes the board fun. butt.. at the risk of being flamed for it., why hasn't someone commented on how this topic has been discussed many times and they should do a search instead of repeatedly asking about this chip over and over again? lol otherwise Frankyd knows his shirt.

Uh, because most of the time telling people to do a search is viewed by them as being rude. But fun, well fun is just fun.

tony, squid--thanks for the indepth concern for my truck! pursuant to your recommendations i went to ebay and found an inventor who claims to have created toilet paper that you actually put IN your engine throught the oil intake. he claims that it absorbs dirt and 'undesirables' and actually cleans your oil from the inside of the motor! he said it is garanteed for the life of your truck and never needs to be replaced--so this actually sounds like a better deal then the stuff you found which only filters when the oil comes out. he said it was so new that no else had even heard of it yet but if i bid right away i could get in on the 'ground floor' of this next huge thing. you may find it hard to believe but i was the only bidder, but hey, at least i won for a mere $530, which is great considering the expense of oil changes these days!!!

See he had fun.He got the info from frankyd, had a chuckle, all is well in Titan Town.

[sgbofav]

They have had Toilet Paper oil filtration systems for years. http://www.bypassfilter.com/

The resistor is a waste of your money.