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-5 is too big for most uses unless you are racing, they are pretty laggy in twins
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Group N is a type of limited modification production rally, I agree they ware probably just -5s or similar. You really need the details from the tag on the core to tell, the housings don't tell you much because they can be machined to suit many cores. For checking the compressor, all you need is to see no physical damage. The amount of movement in the shaft (side to side and forward/backward) is what matters
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I did more research. They are -5. Are they any good?
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Theyre probably just -7 or N1 turbos
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The previous owner told me that he had a shop replace the old turbos with these. https://www.enjukuracing.com/products/garrett-rb26dett-gruppe-n-turbo-upgrade.html Anyone know anything about them? Looks like they are just GT2860R's? Not sure why they are renamed Grup-N... Does the compressor wheel look like they are in okay condition?
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