Nice information. Really suprising to see that the usdm si is sprung more aggressively than the itr.. Also that the itr's are so much softer up front. Does honda put more stiffness up front to increase understeer and make the car safer for novices?Go to post #40 and download the excel file:
So you're saying that using stiffer springs with the stock shocks is a bad idea? makes sense. But what about keeping the stock springs and switching out to stiffer shocks though? Would it cause problems? Doing it probably wouldn't make it faster than oem matched shocks/springs... But it would be interesting to try. How do you think it would handle bumps differently?For an EP3 with stock suspension, the RSX stock springs would be an improvement as the rates are higher but as far as the A-spec kit or a DC5-R suspension, you're better off leaving it alone unless you're upgrading the shocks to say, konis or bilsteins. Even then though, according to mustclime, the shocks would still have to be revalved to match the DC5-R or A-spec springs.
Good to know. What's so different about the aspec or dc5r suspension compared to the type-s? You mentioned earlier that the type r's had the progressive spring rate.. The type-s don't...? Or are they just damped more aggressively?It sounds to me like your shocks are blown. My car does not "bounce" the way that you described. You have the right idea by wanting to upgrade your shocks first but the stock EP3 springs are really not all that great and the RSX springs are only a slight improvement. I would recommend that you look into getting the A-spec kit or if money is tight (like it is for me) look into getting a used DC5-R suspension. I got mine for $300 shipped. It comes fully assembled and the only slight difficulty in installing it is that since it is a DC5 suspension you will need RSX tie rod ends and shave each rear shock bushing about 3mm. The stock EP3 suspension really is horrible in terms of performance and the stock RSX suspension isn't that much better. Throw a A-spec kit or DC5-R suspension and a bigger rear sway bar on there though and it will feel like a completely different car, you'll be amazed how much better the car is in the turns :thumbsup: