Drop in IAT by disconnecting hot water feed to the throttle body?
The throttlebody is a very poor heat exchanger. Regardless of what temp it runs at, the amount of heat imparted on the charge air as it passes through is negligible. It is unlikely that you would even be able to measure the gains.
As I said in the other thread about this last week, the only reason I see to do this mod is to eliminate the lines for various reasons, and to bypass a bad FIAV which will wreak havoc with your idle control. I ran my 2g without the FIAV but with an ISC, as well as without either, for a year or two. There were no measureable performance gains, but idle speed became stable without having to replace that ****box FIAV.
As I said in the other thread about this last week, the only reason I see to do this mod is to eliminate the lines for various reasons, and to bypass a bad FIAV which will wreak havoc with your idle control. I ran my 2g without the FIAV but with an ISC, as well as without either, for a year or two. There were no measureable performance gains, but idle speed became stable without having to replace that ****box FIAV.
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From: Istanbul
so did you do this on your evo?
The throttlebody is a very poor heat exchanger. Regardless of what temp it runs at, the amount of heat imparted on the charge air as it passes through is negligible. It is unlikely that you would even be able to measure the gains.
As I said in the other thread about this last week, the only reason I see to do this mod is to eliminate the lines for various reasons, and to bypass a bad FIAV which will wreak havoc with your idle control. I ran my 2g without the FIAV but with an ISC, as well as without either, for a year or two. There were no measureable performance gains, but idle speed became stable without having to replace that ****box FIAV.
As I said in the other thread about this last week, the only reason I see to do this mod is to eliminate the lines for various reasons, and to bypass a bad FIAV which will wreak havoc with your idle control. I ran my 2g without the FIAV but with an ISC, as well as without either, for a year or two. There were no measureable performance gains, but idle speed became stable without having to replace that ****box FIAV.
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