Holden Performance Products

   Suppliers of Envyous Customs,      X-Air, Mongoose

Onsite Scanning And Programming

Now Manawatu based

Ecu or

Memcal Tuning

Mail order or Road performance tuning options

Doing what the dealerships can't and won't

ABOUT HOLDEN DIAGNOSTICS

We specialise in all things Holden Commodore!

  • ECU tuning,

  • Electronics replacement

  • ECU replacement,

  • Diagnostic call out's

  • Interior lighting upgrades,

  • DIY scan tools,

  • Reverse camera kits  

  • Programming tools

  • and more...

There's not a lot we don't do 

Take a look in our online performance shop or send us a message and inquire.

There are no silly questions!