Yo guys, I had kind of an odd question. I saw a video on some quick thing some kids did for their TDi Jetta. I think they call it "everymod" The trick is you wire a switch with a resistor into the injector circuit iirc, and when you flip the switch, the added resistance tricks the ECU into sending more power and thus more fuel, or something to that effect. Now I know that one of the coolant temp sensors controls fuel to an extent while the engine warms up. Don't they work based on resistance? If so wouldn't it be possible to do a similar little trick to wire in a resistor and make the ECU add a little fuel on demand? I know it wouldn't be like a 50 HP difference, but it could be interesting to toy with, or some ghetto fmu supplement for a ghetto turbo build or something. And just as easy to undo. Just musing. Sorry if this belongs in the misc section.

 

Completely neglected to mention that the car I'm considering this on is a 91 civic LX. But I'm sure the idea is applicable to other cars as well. Which is why I'm asking the question in the first place.

 

If you set the ECT sensor to "sense" a colder situation, you will get more fuel. BUT, more fuel ain't more power! (almost not everytime)

 

Yeah I thought so. Interesting. I dunno, I've noticed a pretty substantial difference in mixture when I'm driving around and it's cold. I've had exhaust problems, so I'm running open headers ATM, and there are all kinds of crackles and pops until my car warms up. And I know just adding more fuel isn't necessarily good, but as I mentioned, it could be a ghetto way to try and prevent leaning out under boost. I'll have to hook up a wideband eventually and actually see how much it changes.

 

Uhm I think the fuel add that causes the colder ECT will not help you under boost, since you will need A LOT more fuel! Hook a wideband as you said and check it out!

 

4cyl hondas have one header. not headers. and if you're turbo, you don't have a header, you have a turbo manifold. and if the exhaust is open after the turbo, it's called an open downpipe, not open header.

I think you need to do a few months of research on how to tune properly. you'll learn a lot.

the only switch you can use at all that will give more power is an electronic boost controller, where when you flip the switch it raises the boost. or nitrous.