Mako

mrgold35

Here is an old thread on lowering springs with progress rsb that might give you a lot of answers: https://acurazine.com/forums/1g-rdx-...r-mods-956697/

I did both Eibach+Progress RSB on my 08 RDX. The mods are not really needed when SH-AWD is engaged. Unfortunately, SH-AWD only works with engine power AND you need to drive the RDX like you stole it to get the "SH" to kick in from just "AWD" mode. Adding lowering springs+RSB gives you the ability to take corners without power faster and under more control. I live in the west with mountain switchback at 6,000-11,000 feet. I can drive downhill on the switchbacks much faster with eibach+progress compared to before. The RDX is still a +2 ton top heavy SUV in the corners without sh-awd engaged with the OEM suspension.

Think about adding performance tires and at a minimal upgrading the OEM brake pads if you like pushing the limits of traction.

Mako

mrgold35

SH-AWD is about the best bang for the buck handling system you can add to a SUV. The lowing springs will give you less dive in braking, less squat with acceleration, less lean in the curves, and lower the center of gravity of the RDX a little bit (around a 1 inch drop all around). You will feel the difference with the springs+RSB when you take curves without sh-awd engaged. I have a 25mph 270 degree cloverleaf on ramp I take to get on the interstate. The speed limit drops from 75 mph down to 65 mph near the on-ramp; but, vehicles are sometimes are driving at 80-85 mph from out of town. In my RDX, can hit that on-ramp at +45 mph and exit at 60 mph to better match hwy speeds to easier merging (Hondata+ETS intercooler also helps).

Lowing springs+Progress RSB+performance tires = balanced handling with or without sh-awd in all situations. You will use your brakes less in the curves, maintain a higher speed during the curve, and use the gas earlier to have a higher exit speed to accelerate out. A lot of times, I just use the paddles to downshift to get the turbo spooled up before a curve and slow the RDX a bit (engine braking). Then I use the gas pedal to rotate the RDX with sh-awd in/out the curve.

The only downside with my eibach springs+OEM struts/shocks was I needed to replace the struts/shocks after 80,000 miles (now have +157,000 miles).

x2lacrosse

@MRGOLD, did you use the hard or soft setting for the RSB?

mrgold35

I did the hard setting on the RSB. I felt an instant difference with my 06 TSX after I installed my A-Spec suspension+Progress RSB. I had to upgrade my TSX endlinks to Fastline adjustable after I snapped one of the OEM. The difference wasn't as dramatic with the already firm RDX and having sh-awd engaged. I would do the Progress RSB if you also going for performance tires. Winter or all season tires will break way before you reach the limits of sh-awd+Eibach spings.

CSmoney28

x2lacrosse

Holy smokes, the end links snapped just b/c the new bar was installed? Any you'd recommend?

Just curious, how did it feel w/o the RSB? Was it really wobbly?

CSmoney28

hues10

So I put the Eibach springs and RSB sway bar on my 2011 FWD RDX Tech. It was so long ago (couple years), I forget what it drove like before them. I do not remember that much of a difference, but since I do not drive hard, I wouldn't notice anyway. Just drove it today to work after a week off. Still fun I must say after 5 years of driving limited miles. So here is my question, for whatever reason, I still have my old springs, and old sway bar, my old original Intercooler. Do I keep them, sell them, dispose of them. I will probably never put the originals back on I don't think. And I plan on driving the car five more years or more. What did you all do with your old parts? Thanks.

x2lacrosse

Niiiice! Bet it was pretty scary too...I don't even want to imagine it.

x2lacrosse

Quite honestly; taking them to a metal recycling place for just a little cash is your best bet. I mean; anyone here w/ the same setup probably still has their OEM parts, so they'd never need them.
And anyone who's still stock, well, can't imagine why they'd want them unless something of theirs broke.

CSmoney28

emotionisdead

Heelltoe is getting a set of 25 Eibach springs in stock at the end of Feb. Get your order in. I decided to go with the lowering springs vs the BC or Megan coilovers based on price and how much I wanted to lower my RDX.

mrgold35

I've saved all my old parts from my TSX, RDX, and MDX when I added aftermarket parts (rims, suspension parts, brake rotors/pads, intercooler, OEM RSB, HID bulbs). They just take up a lot of room in my garage. I figured "Murphy's Law" of as soon as I get rid of the old parts is when I will need them later. So far, my theory of keeping them is working out after +10 years because the only OEM part I've re-used are the OEM rims as full size spares.

CSmoney28