UPDATE: went in saturday and removed the intake manifold and injectors. Since my gasket kit had injector seals, I went ahead and removed the rail, removed injectors, cleaned them, remplaced seals, put them on the rail and let them soak in some carb cleaner. they all looked clean inside, nothing seemed to be in any of them, which is what you would think! The gasked for the manifold looked fine, nothing pinched or out of place. the stock type I bought to put back on, just didnt look as good as the Fel-pro that came with the gasket kit and we took it off, cleaned it up, inspected and put it back on. I double checked the gap on two of the spark plugs from each side, they were .004. I did find one thing odd, on the back of the intake manifold, there is a 'blow off' type of gizmo. We werent sure what position it was in, but we closed it and it was sticking open easily when opening and closing it. So we put a drop of WD-40 on it and it seemed to work better. Our guess was this was some sort of 'gate' in case a backfire occured, it could release pressure out that way and then close when normal operation occured. I am not a car genius but that is all that made sense, see the pictures yourself. Car runs great except once really warm. Put in fresh 5w40, hoping to get better oil pressure at warm idle. I still got it to set off 'oil pressure low' after sitting for 20 minutes once warmed up. If i raise the rpm about 100 rpms, its fine, OP goes up a few pounds and light goes off. I thought about raising the RPM with my diablo tuner. thats great, but it would still idle rough,even with the extra 100 rpm's. Remember, this is only at normal operating temperature. Cold is fine, warming up is fine, once warm, OP goes down to trip the light and idle starts going down, then up, and you can see it in the car lights dimming and increasing. My thoughts, tune is most likely since I do not have any DTC's. I wonder if the car is running to rich or lean. Not familiar with Fuel Injected closed loops systems to know what is the effect of being to lean/rich at idle. I was giong to try one of the two other tunes in the Diablo sport tuner. there is one that is 87 octane, better power/economy than the stock , then there is another one that is for 91 octane, I was going to save that for last. My question, is there an actual 'learn' process once the tune is reset/installed? Whether or not, is a tank of gas enough to see if it works after the tune is changed? I thought the cold weather might have something to do with it, but that is more about poor MPG's in this bitter cold. Also, remember, i have changed my MAP sensor, Cam position sensor, Engine coolant sensor and oil pressure sensor (which didnt work before i did all this and never had 'loping' at warm idle issue before.
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