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Ok, helped a friend install a FAST 90 with NW TB last weekend. The intake made too much noise (whistle/whine) after install in the 1400-2200 RPM range. I have heard these intakes make some noise, but it seemed a little too loud. No leaks were found, all connections were good, etc.
We had a difficult time with the idle portion, and were recommended to swap to an LS2 TB. Today, after pulling the intake we seemed to have found a little bit of coolant sitting on the back of the intake valve of #5. This is a new TSP 402 motor (<1000 miles). How did the coolant get there? Trying to decide what to do. Just looking for some thoughts/input.