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Re: Engine and modification question
Headers will help a lot, and a air filter/MAF assembly from a 5.4L will too. The CAI is over-rated. Next comes major engine work, like ported heads which would be worth some SERIOUS power (40-60 RWHP).
Tuning on these is HUGE. The folks at SuperChips Custome Tuning offer the BEST DIY package out there, but you gotta want to tinjer with your EEC yourself. If you only want a chip, then the BEST (same info different source) is Fordchip dot com.
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