The famous power wire mod.. Help

Explit Player · Feb 27, 2015

So i made my own 4.7k resistor power wire, and i was wondering about which side of my Air temp sensor to connect it to. What effects should i feel also from doing this (if done correctly)?

Explit Player · Feb 27, 2015

usaf2006 · Feb 27, 2015

Either side should work the same I've been told

Explit Player · Feb 27, 2015

So like how does this add Mpgs? From what i understand it does?

jwheeler · Feb 27, 2015

What do you mean by power wire? A resistor connected the intake air temp sensor? Likely won't do a thing except maybe turn on the check engine light. And it won't increase mpg. The idea it that it makes the pcm think that it is colder outside than it is. That way it will give a little more fuel. If it actually works, and does this, it will decrease fuel mileage slightly.

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usaf2006 · Feb 28, 2015

Won't trip the CEL, will increase fuel by roughly 2% from other threads I've read. Some users claim mpg increase. But users mostly report a slight increase of power at WOT (ebay power wires claim 8-10 hp). But 2% fuel shouldn't't be a drastic drop on mpgs.

jwheeler · Feb 28, 2015

How do you measure 2% extra fuel? Why only at wide open throttle?

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Redtruck-VA · Feb 28, 2015

IMO. the IAT is a sensor that plays an important part in the constant changing tune of your engine using real time inputs. It is set conservatively and can be adjusted to suit individuals setups. I used a AeroForce Interceptor gauge to monitor IAT and ambient temperature and settled on 20 degree offset. The colder the inlet air the more timing is seen, this will lead to fuel knock if taken too far or if premium fuel is not used. I chased my tail with this trying to eliminate knock at one point not realizing I had created the problem myself. When I converted to a stand alone PCM I learned the importance of having accurate inputs as they all contribute to the quality of the tune. I now recommend the sensor be well insulated and place close to the mouth of the Throttle body. The SRT style IAT has a longer stock and IMO less susceptible heat soak from the engine heat. Under hood temperatures sky rocket when sitting still. I would recommend getting the coolest air possible to the intake rather than adjusting the IAT.

Ugly but works pretty good.

justin13703 · Mar 1, 2015

I've never understood the point of these things, IMO making the engine think it's getting colder air than it actually is will just create a rich situation. A richer mixture doesn't equal more power or more mpg. Getting actual colder air to the engine equals more power. Making sensors read false information just doesn't seem advisable to me.

The famous power wire mod.. Help

Explit Player

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Explit Player

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usaf2006

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Explit Player

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jwheeler

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usaf2006

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