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Discussion Starter · #1 ·
Hi I have a 2003 ford focus zx5 and I've been wanting to do some things to increase performance of the engine I always see alot of good info in these threads but where would I start and what would be a good idea for a 17 year old engine with 130,000 miles on it. Any ideas on where I could start?
 

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I sell the X4 Flasher , full custom Tune , Free Unlimited Tune updates as you add more NA parts , datalogging , US shipped for 462.00

You should see better throttle response , better over all daily driveability , increases HP and TQ , most say better MPG

Tom
 
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