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RNZ-11Z: im sure there is a better solution that the converted plenum you appear to be running.

Subzeros plenums are said to be very decent and much more affordable that the Greddy Units.

Last time i checked the price of the Subzero penum included a new throttle body, if you go for the Greddy Plenum you need to either pickup a throttle body adapter or go for a new larger throttle body.

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Greddy Plenum from Nengun is less than $1200, just got to hope customs dont hit you or it could be dearer.

Hillsmotorsport plenum cost $895 with XF throttle body and Mark there quoted me that they flow 95cfm better per runner than stock.

I think sub zero are about $1500, they also flow very well from all reports.

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Killer-T, how is the finish on the Sub-Zero Plenum. I really don't like untidy welding, thats were the Greddy plenums are really nice. I know HP results are more important but, I think presentation will also be a big factor in my final decision. Can't really tell from the pic on the Sub-Zero site what the quality of welds are like. Whats the verdict, you seem happy with the performance results, what about build quality?

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