Gains From Methanol Injection In Naturally Aspirated Engines
01-13-2014, 06:26 PM
#1
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Join Date: Mar 2012
Location: TX
Posts: 26
Gains From Methanol Injection In Naturally Aspirated Engines
I'm looking for dyno numbers that some of you guys have seen from putting a snow performance or alcohol injection system on your N/A ride.
I've done the research and understand not to expect HUGE numbers, but several websites are claiming 10-15% gains....which would be great on my 5.0 for only $550-$600.
So far I only have a Steeda CIA with Bama tune, but I'm looking to add a LT exhaust and possibly cams later down the line.
I've done the research and understand not to expect HUGE numbers, but several websites are claiming 10-15% gains....which would be great on my 5.0 for only $550-$600.
So far I only have a Steeda CIA with Bama tune, but I'm looking to add a LT exhaust and possibly cams later down the line.
01-15-2014, 11:18 AM
#2
The gains from methanol injection on a naturally aspirated engine is pretty minimum, most of the time. I would expect more of a 2-3% HP&TQ increase. 10-15% would be realistic for a supercharged or turbocharged engine, that's then capable of increasing manifold pressure only while using the methanol.
Now the few exceptions for an N/A engine, depends more on static & dynamic compression. I've seen engines built with 13:1 compression, in which drive/cruise full time on 93octane. However, it's equipped with a methanol system that only injects the meth at a certain throttle position or manifold vacuum. Normally, an engine like this would have to run on Race Gas or E85, never 93octane. Except, the meth injection provides a boost in the fuel's flash point (octane), to optimize power at high RPM's and heavy loads.
As you can see, saying methanol injection does very little on all N/A engines wouldn't be an accurate statement. Although, for a stock compression N/A Coyote 5.0, I wouldn't expect gains to be much more than 10-12hp peak. You may see as much as 15-20tq down low, but that's stretching it.
To me, your $550-$600 is better spent towards a nitrous kit. You'll really see a serious gain with a 100shot of nitrous!
Shane
Now the few exceptions for an N/A engine, depends more on static & dynamic compression. I've seen engines built with 13:1 compression, in which drive/cruise full time on 93octane. However, it's equipped with a methanol system that only injects the meth at a certain throttle position or manifold vacuum. Normally, an engine like this would have to run on Race Gas or E85, never 93octane. Except, the meth injection provides a boost in the fuel's flash point (octane), to optimize power at high RPM's and heavy loads.
As you can see, saying methanol injection does very little on all N/A engines wouldn't be an accurate statement. Although, for a stock compression N/A Coyote 5.0, I wouldn't expect gains to be much more than 10-12hp peak. You may see as much as 15-20tq down low, but that's stretching it.
To me, your $550-$600 is better spent towards a nitrous kit. You'll really see a serious gain with a 100shot of nitrous!
Shane
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