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Oh Damn, everybody better apologize because this thing actually works! I installed one of those Top speed Limit cutters on my RX7 on need 4 speed UG 2 and check out the results!
Before:
After:
I GAINED A WHOLE INCH AND HALF OF TOP SPEED!!!
So it looks like my amuse speed thingy box is not for sale anymore.
While we're bashing all these JDM foibles I have a confession to make. I have a Mugen oil cap on order!
Now before you ridicule me, it's a knock off so It's not costing much and I bought it because I've read some horror stories about the plastic ones breaking at the top of the thread.
And if I can take the Mugen sticker off I most definitely will.