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In this video you can hear the sound differences between a stock unequal length and an aftermarket equal length exhaust manifold on a Subaru. The car has a bit better spool up with the stock UEL header. The reason could be the faster cooldown of the aftermarket exhaust (thinner) ➔ slower exhaust gas speed ➔ slow turbo spool up.
Car Specs:
- Equal Length Header (Aftermarket) vs Unequal Length Header (Original)
- Stock / Maxspeed Turbo-Back Exhaust System with 200 Cell Cat
- ECU is tuned (LC) + Boost controlled with EVC Boost Controller IV
- Stock EJ207 with IHI-VF35 in this video
- FFS is programmed over a bigger Revlimiter hysteresis
Recorded with a Sony Alpha A77 and GoPro Hero HD 1
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