I order the $5.00 mod from E-Bay. It's this little resistor thing the you put on you intake air sensor that is suposed to trick your car into mixing gas diffrently. Haven't put it in, prob won't just looking to see if somone else has done it and if it works, befor I decide what to do.

DjDoubt

 

Anything from ebay isnt worth putting on the car. The resistor they sent u can easily be bought from Radioshack for like $0.80

Tricking the ECU into mixing the air and fuel differently is not a very smart thing to do. I wouldnt put it on IMO.

 

No Doubt. Prob won't put it on. Actually gave it to a friend to try in his Pontiac 25th edition Pace Car Grand Prix. Not tryin to blow my car up.


DjDoubt

 

good, u can blow up the Pontiac

Pontiac

 

I hate to do this to you all... but from some lab work I've been doing... the resistor works.

Here is the deal.

Our engine's are tuned to run around14 a/f at the richest typically and will even run as lean as 17 when cruising on the highway.

So what does that matter?

Well it turns out there is about 5 hp or so to be had by simply running the engine at 12.5 a/f instead. We did some work on a dyno test stand engine at the university for a class and have all sorts of numbers and data to prove that it's true, and talk to some good engine guys and they should know that as well.

What's that have to do with the resistor?

Well assuming the value is correct, and the application is correct, you are either reducing or increasing your resistance (parallel vs. series). By doing so you modify the voltage that is seen by the ECU which is what it "thinks" it has for air. So now if you trick it to think it has more air, it dumps in more fuel, more fuel gets you closer to 12.5, which gets you closer to more hp.

The only hitch in this is how well the ECU does at reading it's O2 sensor after the fact. This it he unknown I don't know. If the ECU doesn't notice the fact that emissions are a little crappy, then you have your horsepower. If it does notice it though and cuts fuel down because it notices it is rich, then you are back to pre-resistor runnning.

So in other words... you aren't going to lose anything (other than a couple of bucks) but you could in theory gain 5 hp :-).

 

He's right, the resistor works, and is actually a recognized mod in SCCA racing. Unfortunately, the way you do it will involve cutting wires, and if Mitsu sees it, they will probabyl void your engine warranty. The other bad news is that all you got for your $5 was an 80 cent resistor like Kareem said. But anyway, it does work, although not as well as a remapped ECU and/or timing, but the bang for the buck is better (even at the inflated price of $5 )

 

speaking of remapping ecu... why did rrm stop making reflashes on the ecu's????

 

The resister does work on Honda's. Its a old mod from back in the day. Although I was under the impression that it worked to trick the ECU on the Air intake temperature. Which in turn added more gas and advanced the timing a little.

 

JV there is an entire thread about the discontinued ECU on here somewhere

 

ok if that works, ill put it in my beater. what do i connect the resistor to and what type of resistor do i use?

 

i concure, i had the resisitor in my last car, for the money it is actually functional. it will think the car is incoming colder air, therefore will advance timing, on my Cougar with the 2.5l v6 bumped 7hp with the resistor, not much, but is an increase.

 

the resistor is stupid. it fools the ecu into operating improperly. oh btw nice grave digging on this thread.

 

Awww no kidding, really? Damn.. then that means that if I buy an S-AFC or Greddy E-Manage then I'm being stupid because I'm fooling the ECU into operating improperly...

Good thing you put out that input, now I know better than to ever do engine management.

Whether you like it or not, the resistor is about the simples crudest form of engine management possible. It's like taking SAFC and putting all the settings up 1% higher and leaving it.

I believe you are doing the grave digging.

 

So where do I install it?

 

Beause they came out with a new alternative... Piggy back system, check out the engine tech threads, or let me know if you can't find it and I'll post a link.