Quote:
Originally Posted by JetSpeed
So, exactly HOW MUCH HP gain does a drop-in give you? Can't be much if it all. Why wouldn't Sub/Toyota add a drop-in during the factory build if it truly does gain HP?? Any real data??
Don't mean to hi-jack, just never seen any numbers.
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Don't know if serious but...
Why wouldn't they add better brake pads, tires, etc. during factory build if it truly does gain better performance? It's a lot deeper than that.