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Discussion Starter #1
Ok, if you upgrade to a single turbo and run it on PUMP GAS ONLY, which would be better (or safer):

My goal here is NO MORE than 600HP... period! :)

1) Small Turbo that flows 500HP @ 26 psi

OR

2) BIG (HUGE) turbo that flows 500HP @ 15psi

which is the wiser choice for street use?

Also, at what PSI does engine knock start??

**I am basically trying to compare an SP60 to an SP63 (yeah, I know the numbers above aren't correct.. they are theoretical)
and an upgraded fuel system will be used for safety purposes.

Thanks :D
 

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4,635 Posts
go with the bigger turbo because it makes lower boost, it's just that it will take longet to spool if you get higher boost you'll need higher octaine fuel hope that helps
 
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