d34tc Posted May 23, 2011 Report Share Posted May 23, 2011 I tried searching the forums some but couldn't really find anything specific so I thought I would just ask. My question is are there any differences performance wise when looking for round top or flat top SU's for the 510? I know for the Z, people consider flat tops the devil. I have been looking into getting some SU's for my 510 and need to know if I should focus on one or the other, round tops do look cooler to me though haha. Quote Link to comment
datzenmike Posted May 23, 2011 Report Share Posted May 23, 2011 As long as they are 38mm and need two bolts to attach to the intake either is fine. The 38mm flattops do need very minor work to de-smog. The Infamous flattops are found on the 260 Z car and are 45mm (??) and use four mounting bolts and are not really fixable. Quote Link to comment
ggzilla Posted May 24, 2011 Report Share Posted May 24, 2011 The 510 flat-tops are better performers, especially if you get the L18 SSS hitachis. They have a better idle system that the dome-tops. Quote Link to comment
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