The cheapest you will find internals are $300 for now. And thats from HPFPupgrade.com. Everyone else is more expensive that I've seen. And it includes some really good intsructions as long as you have taken out your battery (and box), turbo inlet pipe, and intercooler off before. I have had no experience with fuel pumps until I did this but with having done everything else and i was scared to start it because all the parts are so little and extremely important in the "do not blow your car up" aspect but my car is running just fine now. HUGE difference. Not power but a hell of alot more smooth and definately brought all the power back that I was losing after the downpipe and no more fuel cut.
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09 Mazdaspeed 3 - AEM CAI V2, COBB Turbo Inlet, Corksport TMIC, COBB downpipe, HPFP Fuel pump internals
Semper fi
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