Quote:
Originally Posted by Atomic Ed
Again, thanks for your input Speedy.
Just got a response back from Edelbrock. (Man, they are quick to respond!) They stated they have seen this kind of MAP over-response before on another setup. The solution was to add in an orifice to the actuator hose to soften the vacuum signal. Makes sense. An orifice should be on its way soon from Edelbrock.
As for the high IAT's and cooling; I may try either Water Wetter or Evans Cooling first and see if that helps. A larger heat exchanger may be an option also. I may also try a cooler thermostat. I know It won't help much, but might make me feel better. My only concern about adding in a lower range thermostat is if it will it keep me in warm-up/open loop mode if I don't hit the operating temp the ECM is expecting. Regardless, some improvements on overall heat rejection seem to be in order.
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I'd skip the Water Wetter and Evans. I don't think Water Wetter does much and Evans is flammable (I've seen it). Save your money there is my recommendation. A 180° t-stat I'd definitely do. You should be fine for start up operating temp with that and it will help over all cooling. That's what I run in the Challenger.
One other thing you can check is the intercooler pump speed (GPH or LPH). Too fast and it doesn't give enough resident time in the heat exchanger. Too slow and it doesn't get enough heat away from the intercooler. Edelbrock likely did their homework on that, but it couldn't hurt to cross check their math from a thermal dynamics perspective. Again, 182 after three hard passes isn't bad at all though.
Glad to hear they got a solution to the MAP dealio. Get that squared away and drive it like you stole it and call it good IMO.