This applies to the original one not the new Pro Series. When tearing down my motor i noticed there is no hole for the Fast Idle Thermal Valve. I had a horrible idle when cold so bad in fact that i had to have my foot on the gas for 5min to get a steady enough idle to warm her up…this is just a warning to anyone interested it appears to be a race only not meant for a daily driver. Please update this for the new Pro Series Manifold if anyone knows.
i have same manifold, same issue dude. but , i kinda knew that when i put it on there. also, my forged internals take a few mins to expand as well.