so after having replaced my blown 25DE box with a stronger 25DET box to cope with the obvious power gains of going from sub 100kws NA power to over 200kw forced, all is well apart from a couple of things.
firstly, when under mild load, 4th gear tends to crunch in, hence, you pretty much have to granny it into 4th otherwise youl hear a beautiful noise and feel it up your left arm. is this a sign of an aging box on its way out? clutch is bled properly too btw, every other gear theres no issue. is there anything i can do, without pulling it apart to prolong its life? additives or....im running castrol VMX80 in it atm. is there a thicker oil maybe i should be using
secondly, are 25DET speedo senders a different part to the 25DE ones...main reason is my speedo is pretty much half scaler, ie 20 is 40, 30 is 60, 40 is 80 etc...
help is much appreciated