Hey,
I'm pretty new at turning spanners on cars with EFI.
I have a '95 U13 bluebird, with an SR20de. (Picked it up too cheap not to buy it)
The seller reckoned it had speed cut at 180km/h. I'd like to remove this. A friend who's pretty clued up with CA18's, tells me that the ECU would be costly to modify to do this. (Have to buy a NIstune Daughterboard or some such) Or I could just cut the speed sensor wire to the ECU. I know a little bit about (as in a little, not a lot) about how ECU's use the engine sensors to do their thing. Does the ECU need the VSS signal to work properly? The engine isn't a VVT version, so it wont be relying on it to work that.
Does the speedometer feed come from the ECU?
What do you guys think?

VSS is only used with the auto trans computer and for speed cut... Nether require it however, and I don't think it even throws an error code.

Very good. It's a gonna then!
Although since starting this thread, I discovered that the Apexi rsm that was in the car when I bought it can be used to raise the speedcut if it's wired in correctly.