Mishimoto Ignition Coil Subaru WRX / STI 2004-2010 | MMIG-WRX-04 Forester_2014-2018 It has a solid bond

It has a solid bond after 24 hours and will achieve full bond after 72 hours

*Note: this is an electronic tachometer and thus requires a square wave electronic signal

but the improvement to performance is worth it

so you know when you go for each gear its going where it supposed to go

Mishimoto Ignition Coil Subaru WRX / STI 2004-2010 | MMIG-WRX-04 Forester_2014-2018 It has a solid bondProduct Fitment: 2004 2010 Subaru WRX 2004 2010 Subaru STI Features: Quantity: 1 Improves engine startup, idle, and restores performance A high quality phenolic resin outer shell ensures longevity in high temperature environments Designed and tested to meet or exceed OEM performance specifications Refreshes ignition system, ensuring strong spark for stock and modified vehicles Mishimoto Lifetime Warranty The basic requirements for a properly running