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Hi Mario;
The most common needle in the B18's was the ZH, which is relatively lean. The KA is even leaner, and was only used for a year or two. The KD is about the richest needle Volvo installed, and is actually more than is needed by even the high output B18's. It might be a bit too much, but you will notice a difference. Phil S. tells me it will support 140 plus horsepower, and I believe him!
You can e-mail me from my site and I'll send you the tuning instruction file.
www.sucarburetors.com
Rhys
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