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The CRD's don't "need" the dawes and needle valve. This is fact. But adding these valves impact greatly on better engine performance. This is fact also. I've fitted quite a few to the CRD's to see the difference myself. The CRD's do handle the boost a hell of a lot better than the Di's do, but like anything, theres always room for improvement. What I don't agree on is the comment I keep seeing via messages to me here and my store that the needle valve is a waste on the CRD. Pure bollocks. Lol. Why only take away half of the ECU's control over boost? Take the whole bloody lot I say. Then you have the final say in how the car runs.
If your going to spend the coin on your ride with bigger pipes, chips etc. Why wouldn't you instal these valves? Your only going to make the car go better.
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