MSD80 to MSD81 ECU (Engine Control Unit) Upgrade is one of the best things you can do to your MSD80 powered N54 in both a performance aspect and reliability.

MSD80 powered cars are known for MOFSET failure even after re-soldering new ones in, it will eventually fail again causing massive misfires (disguising the faulty symptom as bad injector)  and potentially blowing your engine...

With MSD81 you wont see a bad MOFSET ever again, that misfiring issue will be in the past.

Performance wise... tuners (for custom tunes) prefer to work with MSD81 as it uses the IJE0S ROM instead of MSD80's I8A0S

WHAT IS REQUIRED ONCE ORDERED ?

• Send in your cars CAS module (one bolt then comes out)
• Send in 1 working Keyfob

WHAT AFTER YOU RECEIVE OUR PACAKGE?

Just plug it in and enjoy!

As long as We will have your CAS module, we can program additional keyfob (we have them in stock)

CAS module location:

***New coded keys does NOT include metal key cutting (we don't have metal key cutting machine) no one needs it***