JT Si
Senior Member
HPD is Honda Performance Development, the branch of Honda that makes racecars. They developed a racecar version of the Si and they sell the parts to race teams. The only transmission upgrade is a stronger 4th gear.Yes I am very grateful for their haste. I dropped the car off last Monday and their main technician was “on vacation” until Tuesday lol. He “got back from vacation a day early” and started it yesterday. I have a feeling they just were waiting on parts and had other things to knock out. Also what do you mean HPD 4th gear? I’m uninformed on that xD
At least one person I've seen has gotten it through hookups and installed it as part of a transmission rebuild. If my tranny goes and I fix it myself I plan to find a way to source it.
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