Rb20/25de+t Turbo Conversion Detonation Issues.

[GTSBoy]

Mail order chips are only of value when you have a stock car (like all those VAG oilers or various other Euro cars) where there is heaps of potential left in the stock setup and the factory tune does not take advantage of it. Write one tune that suits all stock motors using up more of the potential, sell to thousands, profit. No-one suffers.

But there is no such thing as a respectable "stage 1" mods or "stage 2" mods tune, especially for 20 year old cars. Every single mod is different in some way, every single engine ages differently, fuel is different from place to place, climate and elevation are different. Just too many possibilities for it to go bang pop.

There is nothing wrong with EEPOM tuning (except it being a pain in the arse) when it is done on a dyno with a real-tile emulator plugged in, in which case it is just like tuning any other ECU live. EEPROM tuning by the guess and insert method sucks.

[WMDC35]

MCR is the only one I know still doing chips in Auckland, if towing isn't an option you could run a stock a31/r32/c33 rb25de ecu, wire the wastegate open & drive nicely