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X Sedan Z1 HFCs and HKS Hi Power Axle Back Sound Clip


X Sedan Z1 HFCs and HKS Hi Power Axle Back Sound Clip

Old 01-06-2019, 12:45 AM
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Talking X Sedan Z1 HFCs and HKS Hi Power Axle Back Sound Clip

Just installed the HFCs today with the help of a couple buddies (one of which happens to have a garage with a lift and professional tools for servicing company vehicles, where he also built his viper and v10 m5). Install went a million times better than expected considering I'm at 92k miles and the car has lived in NJ, PA, and MD its whole life. Took about 2 hours start to finish. PB Blasted last night and scrubbed the Y pipe bolts and one of the header bolts on each side (that I could get to) with some steel wool, blasted again this morning and 30 mins prior to install. Almost all the bolts came out with ease. No CEL as of now. A little rasp but nothing killer. I think I need new clamps from the resonators to the cannons, the one on the passenger side turns after a few days. All in all I absolutely love it and have been grinning all night. It's an aggressive set up, but I'm immature and like shiny things that sound like they explode.

For the record, the rev limiter in neutral is ~5k when you're not moving. When moving and in neutral, revs up to 6-7k will produce a few burbles/pops on the way down and spirited driving will produce pops between 2/3 and 3/4, and burbles on 3/2 downshifts. Will try to get some go pro videos tomorrow when its nice and sunny. Going for a drive with a friends (WRX and a 335). Should make for some fun backroad videos.

2010 G37X Sedan
Z1 High Flow Cats
HKS Hi Power Axle Back
Stock air boxes with K&N drop ins

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