Is this possible?
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Joined: May 2001
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From: Connecticut via Abu Dhabi
I don't know anything about that product, but SLO S2K is correct, changing the air temp signal to the ECU will affect the timing advance. When the air temp is below 130F the timing advance is about 25-27 deg, the timing drops in the teens when the air temp in higher. The ECU essentially responds to the air temp input signal.
As far as mikeyg's response, he's talking about fan switch or perhaps thermostat, these control the fan and coolant flow respectively and have little bearing on the air temp.
I am not sure if such a product is a good idea because several have tried running aggressive timing (such as Spoon or Mugen ECU) and discovered that removing this safety margin in the stock ECU can lead to engine failure.
cheers
W
As far as mikeyg's response, he's talking about fan switch or perhaps thermostat, these control the fan and coolant flow respectively and have little bearing on the air temp.
I am not sure if such a product is a good idea because several have tried running aggressive timing (such as Spoon or Mugen ECU) and discovered that removing this safety margin in the stock ECU can lead to engine failure.
cheers
W
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Joined: Jul 2002
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From: Texas City
I know nothing about this product but it makes me a little nervous. Others have said that if you can "fool" the ECU into thinking it's colder than it really is, you'll get a power boost because it won't retard the ignition as much.
That may be true but I have to question, in the light of a lack of any further information, whether or not this is a smart thing to do. I would assume that Honda has the system programmed to do this to reduce the possibility of pre-ignition problems. (?)
Is is possible that you increase the risk of doing damage to the car under these circumstances? Also, what's this little black box telling the ECU when it really "is" 40 degrees outside?
Just wondering,
Drive Safe,
Steve R.
That may be true but I have to question, in the light of a lack of any further information, whether or not this is a smart thing to do. I would assume that Honda has the system programmed to do this to reduce the possibility of pre-ignition problems. (?)
Is is possible that you increase the risk of doing damage to the car under these circumstances? Also, what's this little black box telling the ECU when it really "is" 40 degrees outside?
Just wondering,
Drive Safe,
Steve R.
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Joined: Jun 2004
Posts: 4,088
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From: Los Angeles
Originally Posted by suprfunguy,Dec 21 2004, 07:47 AM
YES-it is possible...and for $69.99 I'll sell you a "Turbonater" electic turbo kit that will bump HP up another 25+. Together they give almost 50 hp under 100 bucks...not bad! You will be the MAN!!!
-I apologize... I couldn't resist the chance to be a "smartass"... Neither mod will provide any benefit to your car...sorry.
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Joined: May 2001
Posts: 505
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From: Connecticut via Abu Dhabi
When it's 40 deg. F outside, your intake is probably anywhere from 90 deg. F (say cruising on the freeway) to 160 deg. F (driving the car hard).
The ECU retards timing as air temp sensor reports higher numbers. I would say the box lowers the voltage signal is my guess.
I guess the bit of good news is this device retains the factory safety programming, because as the temp signal increases, so will the altered signal, where as the Mugen and Spoon ECU eliminate that component completely; if for no other reason than they are a "race ECU" that assume you will be running the car on race gas, a higher octane, which in turn lowers combustion temps, which means you make less power as the octane increases. To offset that, they run the ECU's higher advance timing program.
All this is just me thinking out loud, don't take it as factual or proven through data gathering. The only part I am certain off is the temp variation to power output relationship.
What I have not proven yet is whether the ECU adds fuel along with the timing retard, my feeling is that it does slightly but not as much as people imagine. I hope to gather that data over the next few months.
cheers
W
The ECU retards timing as air temp sensor reports higher numbers. I would say the box lowers the voltage signal is my guess.
I guess the bit of good news is this device retains the factory safety programming, because as the temp signal increases, so will the altered signal, where as the Mugen and Spoon ECU eliminate that component completely; if for no other reason than they are a "race ECU" that assume you will be running the car on race gas, a higher octane, which in turn lowers combustion temps, which means you make less power as the octane increases. To offset that, they run the ECU's higher advance timing program.
All this is just me thinking out loud, don't take it as factual or proven through data gathering. The only part I am certain off is the temp variation to power output relationship.
What I have not proven yet is whether the ECU adds fuel along with the timing retard, my feeling is that it does slightly but not as much as people imagine. I hope to gather that data over the next few months.
cheers
W
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