Geez, I'm getting attack by everyone here lol
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Calum, enjoyed your example. Foot on firewall... & you're prob right that putting foot on the firewall will prob get more rigidity. At the same time, you can't keep the foot on the firewall all the time or keep same pressure all the time.
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Tcoat, you didn't get the fast & furious pun. I just changed it to mm & inches instead inch & mile, c'mon now. As for 1% vs 0.0001%, are you factoring stock struts & springs w stock tires? Or are you factoring stiffer suspensions with R-Comp tires?
Put the smartass comment a side, I'm pretty sure there are some placebo effect for this part... at the same time, you cannot deny this part from get-go. Because it make less than 0.01mm movement and it cost near $900 doesn't mean, it's POS money sucking part that doesn't do anything. There's a reason TRD made this part (& god damn expensive too), reason prob 1% or less of 86/BRZ will understand.
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venturaII, making the chassis hard doesn't mean it's helping the chassis' life. Important part of chassis is, there need to have spot to absorb/release the stress within the chassis.
Way1, I'm lazing to click "mention". Lol
I'm not saying door stabilizer doesn't work. What I said was, it makes small effect, but it still makes a difference. I know it works, specially on aftermarket suspension.