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Discussion Starter · #1 ·
the stock ones or the MAC LT's ?

which will give off more heat.. hurting performance.
 

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The mac's give off a lot more heat but they do not hurt performance at all they are a nice gain actually. One of the best mod's I have done along with the headswap
 

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The stockers will actually hurt you more.Because they are cast iron and retain heat more.
The macs will "shed"heat faster say while cooling of at the track.
 
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