I had MORE people asking about the slight drop, so I'm putting this back up for a bit.

Thanks to ThePunk for helping me out. Took us hours, but whocares...
Thanks to Rdriver for his ITR springs.
If you know anyone with a 99-00 Si that just want's a mild suspension change.

First off, here is a pic of the stock height. Note: Only change to the suspension are the the tires (Bridgestone Ponteza RE730 205/50R15 @ 40psi warm) AND Skunk2 front STB, which is MUCH STIFFER than the stock bar. I highly recommend this bar, if you cannot afford Mugen, and tired of Comptech's slightly stiffer version of the ITR front stb.



ITR Springs w/3000 miles


Before: Front


After: Front


Before: Rear


After: Rear

 

Comparo:Front
Before-After


Comparo: Rear
NOTE: The pics are reversed
After-Before


Front Springs Comparo:
Left Si Right ITR


Rear Springs Comparo:
Left Si Right ITR


IMPRESSIONS:
I have these springs installed with the Stock Si shocks. So far, and ride has been improved. Not by a whole lot, but enough to notice the stiffer ride. Weight transfer to the rear during hard acceleration feels much better. Because of the stiffer rear spings, the front wheels stick better during launch. This is also helped with the stiffer springs up front. In addition, the slightly lower ride height helps.

Freeway cruising is nice. It's a bit stiffer, and you can feel the road more, but the car feels more controllable at speeds excess of 110mph. Driving around too feels more rough, but I'm able to take the turns much harder. The work between the Z-rated rubber of the RE730's, combined with the Skunk2 bar, and the new ITR springs, do work quite well.

The springs rates are about 25 to 35 percent stiffer than the stock springs, and with rears being progressive, the rotates better around turns. Stock Si springs rears are 201Front/99.5Rear. Whereas the ITR springs are 247Front/197-247Rear. I really like the fact that the car isn't very low. Much like the Eibach Pro-Kit would lower the Si, the ITR springs do a good job. The wheel well gaps have are smaller, and more livable to look at.

There are several reasons why I went for the ITR Springs

Cost - $60 shipped compared to around $200 for the Pro-kit. I don't like the way the Pro-kit will lower my car. Although it is nice, and the springs are great.
$200 for springs + $450 for Koni Yellows = $650.
ITR Springs $60 + four hours of mine & Dion's time + $40 for dinner + Working on my own ride + learning more about suspension = $100 & Valuable experience

Shocks - I can keep my stock shocks. Unlike the Pro-Kit, where you must buy new shocks at the sametime OR getting them rather quickly if you cannot afford to buy both shocks/springs at the sametime.

Reliability - Several people with this setup have had no problems so far. In fact, a few have auto-x with them, and the car feels much more solid in the turns.

Overall, I feel this is a very good low cost mod. The car DOES feel more solid in the turns, and sweeping corners. Launching feels a bit quicker because there isn't as much load transfer to the rear.

I do recommend these springs, if you cannnot afford Pro-kits, or you just want a mild suspension change.

 

Good post!

I have ITR springs with Tokico Blues on my coupe. They ride great and only lowered it a bit. I like the feeling of lowered cars, just not the look (and everythinhg that comes with having a low car).

 

great write up
I would like to see an h&r sport, itr spring comparison