Hello,
I have a 2002 WRX with an EJ205 with VF39 turbo from an 05 STi and all the supporting mods to go along with that.
My tuner, whom I trust, quoted me a 20-40 WHP increase on their dyno from switching nothing but engine management to a Link while on pump gas. I have already the ECU paid for and I am waiting for my tune appointment. Although I'll be upgrading turbos and going flex fuel, so it won't be an apples to apples comparison.
They attributed this gain to the faster processing on the Link coming from the old 16-bit 02 WRX ECU.
They showed me a dyno graph of an EJ205 car with a Link ECU making 300 WHP 300 WTQ on the same VF39 as me on pump gas.
I made 250/225 on the same dyno.
I just want some input on whether or not power gains exist when upgrading from old ECU because I have heard from other tuners that power gains from ECU swaps alone are not possible when everything else is equal.
Thanks!
