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Old 04-07-2013, 02:40 AM
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sumpnut
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Default what engine to fit in my RS4
I have the .15 enging fitted in my HPI RS4 and want to go faster. Is it worth buying the HPI nitro star 3.0 engine thats comes in the rs4 now. Will that engine make much difference to the speed or is there something better i can buy. I dont want to spend a fortune.
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