Following: Good luck with your project. Keep us update with your upgrades. I believe CS only has the rear sway bar. But look up JBR, they have them for both ends. I'm planning to just grab the JBR's rear just to tighten the rear up a bit with some adjustable or beefier end links. And similarly may be some Tanabe springs. But that would be the extent of my mod for...this...my wife's car

 

Here are all my suspension upgrades and video installations on them:


Corksport Front Strut Tower Bar:

This is by far the most mild suspension upgrade I've done so far. You will only feel its effect when you're driving at the limit in turns and when cornering at high speeds. It makes the engine bay look prettier, but most people won't find the cost worth the change.

Corksport Rear Sway Bar:

I go back and forth between this or my coilovers being the best suspension mod I've done to my build. The Corksport RSB completely transforms the handling and allows the car to take corners and turns with much more confidence. Body lean is reduced significantly, but as a result of the stiffer rear end this car does become a bit oversteer happy so keep that in mind!

Godspeed Mono SS Coilovers:

Dropped the ride height to an appropriate level rather than driving around like a monster truck. It keeps the OEM ride quality and feels much more behaved in turns than at stock height as expected. The dampening has 16 levels of adjustment which is perfect for most people. I would say these are more performance oriented so if you only want dropped ride height than going springs might be better.

 

Here are all my suspension upgrades and video installations on them:


This is by far the most mild suspension upgrade I've done so far. You will only feel its effect when you're driving at the limit in turns and when cornering at high speeds. It makes the engine bay look prettier, but most people won't find the cost worth the change.

I go back and forth between this or my coilovers being the best suspension mod I've done to my build. The Corksport RSB completely transforms the handling and allows the car to take corners and turns with much more confidence. Body lean is reduced significantly, but as a result of the stiffer rear end this car does become a bit oversteer happy so keep that in mind!

Dropped the ride height to an appropriate level rather than driving around like a monster truck. It keeps the OEM ride quality and feels much more behaved in turns than at stock height as expected. The dampening has 16 levels of adjustment which is perfect for most people. I would say these are more performance oriented so if you only want dropped ride height than going springs might be better.

Thanks for sharing. Personally I'm not going for coilovers because of the salt used where I live. After 1 winter many of these coilovers tend to seize up unless you use a coilover sleeve. The quality is just not up to par on most coilover options compared to what I have seen with Bilstein. In my opinion upgrading the struts and springs is going to be last on my list after sway bar (front included) , some differential work and maybe some camber plates on the front axle to get the front neg. camber dialed in. Where I live, the extra ride height of the stock suspension is welcome. The stock suspension isn't all that bad either, I think the sway bars are just too thin and allow for too much body motions. I'm only looking for a more mild drop which is why eventually ill be going for Tanabe springs.

What year 6 do you have and how many miles/km are on it? Instead of doing everything at once, you could piecemeal parts of the process - that would let you evaluate better how each piece affects the handling. I concur on starting with a rear sway bar, and if you have more than a few miles on the car already swap out the end links since you'll be working on those anyway. Rear sway is easy to do, and doesn't require digging in deep like shocks/springs/bushings/front sway.

As you stiffen parts of your suspension I'd look at doing chassis bracing too - in fact, I'd do that along with the rear sway or make that the next step after that. While the GJ is no wet noodle, it could use help, especially in the rear (based on my experience riding backseat in and driving GJ's). A stiffer RSB will only put more forces into the body back there too. Other positives would be dialing out a little slop in steering/transitions, and probably more important to you is that it should help refinement/stability on rougher roads.

One thing to keep in mind, since you are in Canada, is stiffening the suspension and changing the understeer/oversteer balance may reduce stability in the snow by a surprising margin. The extra 6" of wheelbase of the GJ probably helps a lot, but when I had my '05 GG (which was close to neutral on winter tires and would lift throttle oversteer a bit) driving in snow/slush always had some amount of white knuckling because through the seat I could feel the rear's ambivalence towards holding steady all the time.

Anyway, have fun keep us posted! Maybe there's some good coronavirus deals on AutoExe or Ultra Racing .

Good suggestions. It's a 2015 with about 100k miles on it. The stock suspension feels OK for now, actually its held up rather well, but I can't stand the factory sway bars. too much body lean around hard corners.

It's my dads car, and while he doesn't corner real spirited I trust that some upgraded suspension would be most welcomed even during only moderately spirited driving. While upgrading everything piece by piece is a better idea It's not going to be possible, as finding a time to bring his car to the shop is tough and I will need to get him a rental car if my mechanic needs to keep the car overnight to finish the suspension. So ill be upgrading everything at once at roughly 120k miles or so.

chassis bracing sounds like a very good idea. I forgot about that. Will make sure to keep it in mind.

As for driving in the snow, I don't think there should be any problems as long as we use good tires?

I am planning to ECU tune his car with OrangeVirus very soon, so the suspension/chassis upgrades will be most welcomed. We have recently dropped the transmission pan for a filter service and the car drives/feels great.

 

I am in no hurry to do this as the OEM suspension feels fine as of now, but I'm definitely not very impressed with the factory sway bars. What else should I upgrade or replace while doing this job? How good at the factory bushings, tie rods, control arms, etc on these cars?

What year 6 do you have and how many miles/km are on it? Instead of doing everything at once, you could piecemeal parts of the process - that would let you evaluate better how each piece affects the handling. I concur on starting with a rear sway bar, and if you have more than a few miles on the car already swap out the end links since you'll be working on those anyway. Rear sway is easy to do, and doesn't require digging in deep like shocks/springs/bushings/front sway.

As you stiffen parts of your suspension I'd look at doing chassis bracing too - in fact, I'd do that along with the rear sway or make that the next step after that. While the GJ is no wet noodle, it could use help, especially in the rear (based on my experience riding backseat in and driving GJ's). A stiffer RSB will only put more forces into the body back there too. Other positives would be dialing out a little slop in steering/transitions, and probably more important to you is that it should help refinement/stability on rougher roads.

One thing to keep in mind, since you are in Canada, is stiffening the suspension and changing the understeer/oversteer balance may reduce stability in the snow by a surprising margin. The extra 6" of wheelbase of the GJ probably helps a lot, but when I had my '05 GG (which was close to neutral on winter tires and would lift throttle oversteer a bit) driving in snow/slush always had some amount of white knuckling because through the seat I could feel the rear's ambivalence towards holding steady all the time.

Anyway, have fun keep us posted! Maybe there's some good coronavirus deals on AutoExe or Ultra Racing .