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Improving Fuel Atomization

This is a discussion on Improving Fuel Atomization within the Computer & Tuning forums, part of the LSx Technical Help Section category; The only reason I could see a power gain from an injector swap alone would be if you were maxing ...

  1. #21
    Moderator 98TransAmWs-6's Avatar
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    The only reason I could see a power gain from an injector swap alone would be if you were maxing out the injector (meaning you need more fuel) and it was holding you back power wise. If the injector you get truly is significantly more efficient than the oem ones I could see a slight power gain but not much especially on a stock cubed bolt on application. For your application getting injectors is a waste as your stock ones are plenty big and you can spend the money you would on injectors elsewhere that definitely increase power. This is of course unless you plan on doing a cam and then in that case go ahead. Injectors are just one of those supporting mods you need to do for certain applications but I would never swap them with the presumption that they will increase horsepower alone.
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    Senior Member Naaman's Avatar
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    Quote Originally Posted by 98TransAmWs-6 View Post
    The only reason I could see a power gain from an injector swap alone would be if you were maxing out the injector (meaning you need more fuel) and it was holding you back power wise. If the injector you get truly is significantly more efficient than the oem ones I could see a slight power gain but not much especially on a stock cubed bolt on application. For your application getting injectors is a waste as your stock ones are plenty big and you can spend the money you would on injectors elsewhere that definitely increase power. This is of course unless you plan on doing a cam and then in that case go ahead. Injectors are just one of those supporting mods you need to do for certain applications but I would never swap them with the presumption that they will increase horsepower alone.
    Right. And this is what everyone else was saying on the other forum. Jon is saying that the gains most likely came from the tune alone, rather than the injectors.

    I've posted this question in the other forum but only got two responses so far: One says it's the injectors providing the gains, the other reserves the same skepticism as those on this forum. We'll see if the tuner himself chimes in. Hopefully he does.
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  3. #23
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    There is no question that better atomization will result in an overall "better" burn, but absent a serious issue with your stock injectors I just don't see it as resulting in that much of a change. If your current injectors are leaking and fuel is being dribbled into the cylinders between injection events, then you will absolutely see an improvement in mpg. Absent an issue such as this, I just think that the differences will be miniscule and, as Jon pointed out, difficult to actually quantify due to other variables. This being said, there is certainly no harm in upgrading both your injectors and your tune to account for the change. Over the long run, the cost of the new injectors, installation and the tune will take quite some time to offset with any resulting fuel savings.

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