Rep Power: 194

Hey whats up guys? While I almost killed my car I came up with a mind-blowing idea. (I accidentally didnt tighten my header bolts down, and they were drawing fresh air through the runners causing the o2 sensor to read a lean fuel mixture and i saw fuel dripping out my manifold...dang) Anyways, I thought, if I had a turbo slapped onto my car (yes, literally slapped) I would have extra air running through my engine, but the stock fuel mixture. O2 sensors read a high voltage when running rich, and a low voltage when running lean. so therefore high voltage = engine given less fuel and low voltage = engine given more fuel. If I would wire resistors in the circuit in between the o2 sensor and the ecu and lower the voltage, the engine would think that it is running lean, and therefore add more fuel, keeping in sync with the added air with the turbo. whether at idle or wot it would keep the same base, but just added fuel. Do you guys think this would work well other than buying emanage, aem, or kpro? any feedback appreciated

 
Rep Power: 284

Very clever, but there's more to it than just adding fuel, that's why relatively few people choose to even use AEM FIC or Emanage compared to the more capable K-pro. If you do some reading just comparing k-pro to the less capable management options you'll get a good understanding of exactly how many adjustments are required to get a F/I engine tuned precisely enough to be reliable. If adding a turbo was simple, my car would already have one, sadly it's not and we don't have cheap ecu chipping options like B, earlier D and H series engines.

Now, if you just wanted to trick the ecu into adding a bit more fuel to make better use of a i/h/e then I could see that having a chance of working. You'd need a way to read the A/F ratio however, otherwise you could accidentally add to much resistance and cause your car to run dangerously rich.

 
Rep Power: 194

Thats the fear I had when using my idea is either running to lean or too rich. but if i got a wideband sensor with the little gauge put in my car i could test it out. I do have i/h/e and possibly am swapping the manifold out for the d16y8 so i can see it being beneficial there.
And i so badly want a kpro setup for my car, but im only in high school, and 1500 isnt easy to get real quick ahaha. thanks for the reply mindbomber, i hope to try this thing out but im going to ask a couple mechanics what they think of it first

 
Rep Power: 284

Everyone battles with costs when modifying cars, it's an extremely efficient way to spend money. If you want to get the most out of a d16y8 and i/h/e then consider looking for a used emanage, I've seen them go for $300 a few times and it'll at least get you started. Really, you don't need k-pro until you go turbo and that's a $3000-4000 expense anyway, so at that point an extra $1000 isn't usually that big a deal.