easy upgrade that works

[supvnman]

those "diablo chips" on ebay really work. they tap into you intake air temperature sensor (IATS). It runs off of impendence (Ohms). the lower the temperature the more the resistance. you can acheive the same result by putting a resistor in-line with your IATS. It fools the computer into advancing the timing and increasing the fuel given to your engine becasue it thinks the air is so much colder/denser. the only problem is finding the lowest temperature/Ohm reading the cars computer will recognize. I have no idea how to figure these out. i already tried hooking up a multimeter to the IATS when it was cold out but i want to figure out the limit of impendence.

my friend bought one of these chips for the hell of it for his sunfire gt (2.4 dohc with short ram intake). my alero (3.4 two door/stock) would consistently beat him by the end of first gear no matter how we started off. now his car is even in first gear, pulls ahead midway through second, and stays ahead in third. Thats without him using high octane gas (the "chip" works better with higher octane gas cause it advances the timing).

any tips would be great, thanks for reading this.

[nex]

:lol: :lol: :lol: :huh?: :huh?: :huh?: :rolleyes: :rolleyes: :rolleyes: :rolleyes:

[99blackalero]

i think i could spare 20 cents

[Final-Reality]

So what? It dumps in more fuel... putting more fuel in the engine is never a problem, it's putting more air into the engine that's a challenge (and it's how you increase power too). Turbo, anyone?

[Crazy_Canuck]

Originally posted by supvnman@Mar 2 2004, 02:27 AM
It fools the computer into advancing the timing and increasing the fuel given to your engine becasue it thinks the air is so much colder/denser.
Advancing your timing could lead to problems down the road, not to mention a severe dent in your fuel efficiency. Your engine timing was set up for the best results straight from the factory. Even if you have engine / performance mods, I'd be careful with that and spend the bucks to have the computer reprogrammed instead.

[haulmarc]

[QUOTE]Your engine timing was set up for the best results straight from the factory.

actually programming (including timing) is a compromise (not aggressive or optimized) considering all the different environments the car could be driven in. it has to be able to work at high and low altitudes, extremely hot or ice cold weather...

[supvnman]

just thought id throw that out there since it costs 20 cents and is definitly your bets bang for under a buck. just a thought.

[misslindseysue]

Originally posted by haulmarc@Mar 2 2004, 09:23 AM
actually programming (including timing) is a compromise (not aggressive or optimized) considering all the different environments the car could be driven in. it has to be able to work at high and low altitudes, extremely hot or ice cold weather...
Your car (actually, the people who calibrate the engine and trans) is/are smarter than you think! It is optimized for every condition, and can detect different conditions. I'd see my boyfriend a lot more if they didn't calibrate for all kinds of weather and altitude.

[Crazy_Canuck]

Originally posted by supvnman@Mar 2 2004, 04:44 PM
just thought id throw that out there since it costs 20 cents and is definitly your bets bang for under a buck. just a thought.
I myself wouldn't try that in any of my vehicles.

haulmarc, that's more or less what I meant to convey. When you start tampering with the timing, you can really damage your engine if you don't know what you're doing. For the performance gain out of it, I'd rather not go there at all. :P

[haulmarc]

gotcha canuck, i agree :thumbsup:

[sound_xtreme]

you're jokin right? especially when you say it adds a ton of horsepower right? if not wow, we have a new winner! lol

[Crazy_Canuck]

:P :lol: :lol: :lol: :thumbsup:

[bigd6983]

well I am going to keep this going with some information. Everyone who has a haynes manual can check it out because it lists the resistance the sensor puts out at different temperatures, i mean be realistis your car isnt going to be inhaling air at 60 degrees so it would be unrealistic to use a resistor at that value, so the question is what would be the right resistance to use to keep your engine running healthy, but also be able to switch on a lil (and I mean a little performance, every once and a while. Now I dont think putting a resistor in it at all times is such the best thing to do. Personally I think if there was a way to control it on and off, and also a variable way to adjut it(petentiometer). If no one knows what that is its an adjustable resistor. you can buy one, install it and change the settings to see what works best for you. Now as far as when you start it up if its left in a resistance that tells the pcm the air is 180 degrees what that will do to your car i dont know so i dont take any responsibility for anything that were 2 happen if anyone decides to use this idea.

[flalero]

Maybe it works for his car, but it didn't work on my GA. I read a lot about this mod online and I figured I would try it out. Heck, for that cheap, you can't lose. It didn't do a damn thing for the car except give me worse gas mileage.

[mlcroy20]

I think this mod definetly affects every car differently! I tried it out for about a month and my gas mileage dropped from like 22mpg to about 18mpg on average! With no differance in performance!

[1WhiteOSV]

If you can gain THAT much power/acceleration from $0.20 wouldn't you think EVERYONE would be doing it? Come on...I actually have one of those "reisitor mods" it came with my CAI i bought and i put it on just for poops to see if I noticed anything and the answer is NO..i didnt..the only thing I gained was a nice little orange light on my gauge display that said "check engine soon" so i took it off and plugged the IAT harness back in and the CES light turned off!...NOT worth even 20 cents!

[2000NavyAleroGLS]

The people that put the engine together are smarter than you think. The engine automatically will adjust to your driving. I even noticed it. The first time i noticed it was when driving my parents Intrigue. The tranny did a lousy downshift first time I went to pass on the highway. Then the next time I hit it the tanny actually Shifted a lot more firmer and the car actually picked up speed quicker. The car will read the driver with noticeable results. This just shows that the people who put the car together make the car pretty smart.I haven't had my car long enough to notice something like this but I'm sure that it would be pretty close to the same thing. It wont give a lot of extra power but it will chop of about 0.4 seconds in the quarter mile acording to a mechanic I talked to that drag races.