OK thread mine time...
I've now gotten my hands on a 3.45 LSD from an S1 XR6 to upgrade from my 3.08 single spinner. Have also gotten a speedo cog to suit as well.
From what I've been reading, the
ECU uses speed, not RPM to determine gear shifts - so the easiest way to alleviate this is to transplant an XR6
ECU into my car. Alternatively, a J3 chip can do this for me using my stock
ECU.
However, if I get the diff put in WITHOUT changing the
ECU straight away, will this cause me issues - obviously there will be higher RPM's before gears change, but in
daily driving conditions, will this be a massive issue?
I'm guessing at WOT this could be problematic...so the intent is to most likely go the J3 route, as that can be dyno tuned as well...
Is there anything else I should be considering?