Eibach GT Pro-Kit Lowering Springs on a GTPE

[azerik]

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[MachE23]

Mark, thank you for the very informative post! Question is will a Ford dealership be open to recalibrating the VDS as I looked into FDRS and that seems cost prohibitive and frankly I don't have the knowledge to begin with. I will be waiting to see if Eibach comes up with a Magneride option before making a decision anyway. I love the stance of your car and definitely want to have same for my GTPE.

 

[markboris]

Mark, thank you for the very informative post! Question is will a Ford dealership be open to recalibrating the VDS as I looked into FDRS and that seems cost prohibitive and frankly I don't have the knowledge to begin with. I will be waiting to see if Eibach comes up with a Magneride option before making a decision anyway. I love the stance of your car and definitely want to have same for my GTPE.

Hi Shannon, I don't see why a Ford dealer would not do this. But I would not take it there just for that. Maybe when you bring it in for something else, I would have them do it. Maybe someone in your area has FDRS? There are quite a few members here that have it. You do not HAVE to have it recalibrated as lowering it the small amount it does will not throw up any suspension warning messages. The repair manual states if any parts are changed on the suspension or the ride height is altered, there needs to be a recalibration of the ride height in the VDM. No big deal if you can't get it done right away.

 

[mkhuffman]

Hi Shannon, I don't see why a Ford dealer would not do this. But I would not take it there just for that. Maybe when you bring it in for something else, I would have them do it. Maybe someone in your area has FDRS? There are quite a few members here that have it. You do not HAVE to have it recalibrated as lowering it the small amount it does will not throw up any suspension warning messages. The repair manual states if any parts are changed on the suspension or the ride height is altered, there needs to be a recalibration of the ride height in the VDM. No big deal if you can't get it done right away.

This question is a little outside of the OP, but since you mentioned FDRS... I would like to get 255s instead of 245s when I get new tires. That will impact lots of things including speed, distance tracked and consequently mi/kWh measured by the car. Can you adjust the car in FDRS to the correct wheel size?

 

[markboris]

This question is a little outside of the OP, but since you mentioned FDRS... I would like to get 255s instead of 245s when I get new tires. That will impact lots of things including speed, distance tracked and consequently mi/kWh measured by the car. Can you adjust the car in FDRS to the correct wheel size?

Yes Mike you can in FORScan but it's not worth it. Even if you went to 265's it would not be worth it. Also, you can't change it very much like only one tire size or so. I wouldn't worry about it at all. I've changed to many different tire sizes and staggered sizes that were different front and rear and as long as you don't go beyond a 3% change, you're ok. 255's are only a 1% difference and about -.5 mph diff on speedo and 265's are 2.5% difference and -1.5 mph diff on speedo. Also, I've found in several MME's that the speedo runs about 1-2 mph fast so changing to the larger tires will actually bring it down to what it should be. And if your speedo is perfect then it will barely show a slower speed.

 

[azerik]

Got the GT pro kit on the way for my car.
I figure part of the difference in spring rates for GT V Premium is going to be the stock swaybar firmness and wheel weight. The 19's are about 4lbs lighter than the GT wheels. The GT pro kit is also lighter in the first stage which I think the Eibach sway bar may well help equalize. I still have my stock front bar which I've thrown around the idea of putting back in. I'd be super happy if this allows me to keep the RX's on and get DSW06+'s down the road. I've started recoding a handful of my hell zones to be able to diff noise and shock differences.

 

[markboris]

Comparison between Eibach lift spring on a Premium and lowering springs on a GTPE: #43

 

[mkhuffman]

Got the GT pro kit on the way for my car.
I figure part of the difference in spring rates for GT V Premium is going to be the stock swaybar firmness and wheel weight. The 19's are about 4lbs lighter than the GT wheels. The GT pro kit is also lighter in the first stage which I think the Eibach sway bar may well help equalize. I still have my stock front bar which I've thrown around the idea of putting back in. I'd be super happy if this allows me to keep the RX's on and get DSW06+'s down the road. I've started recoding a handful of my hell zones to be able to diff noise and shock differences.

Eric, I am curious why you ordered the GT Pro instead of the Non-GT Pro? It seems like the Non-GT Pro would lower your car less than the GT springs will, and they are designed for the shocks on an ER AWD.

I am also wondering what would happen if I put the Non-GT Pro springs on my car. Would the height be about the same as it is now, and maybe they would be more comfortable? Nobody here has tried it yet, so I guess I would be the first.

Mark, what do you think? If I could throw them on myself in a weekend, I would try the Non-GT Pro springs just to see. And if I didn't like them, I could easily put the OEM ones back on.

Edit: Mark, I found your post comparing your GTPE and Premium:
https://www.macheforum.com/site/thr...emium-three-days-with-gt-pe.11151/post-293981

So in theory, the Non-GT Pro spring would lower my GT around 0.9" in the front, and 0.6" in the rear.

 

[markboris]

Eric, I am curious why you ordered the GT Pro instead of the Non-GT Pro? It seems like the Non-GT Pro would lower your car less than the GT springs will, and they are designed for the shocks on an ER AWD.

I am also wondering what would happen if I put the Non-GT Pro springs on my car. Would the height be about the same as it is now, and maybe they would be more comfortable? Nobody here has tried it yet, so I guess I would be the first.

Mark, what do you think? If I could throw them on myself in a weekend, I would try the Non-GT Pro springs just to see. And if I didn't like them, I could easily put the OEM ones back on.

Edit: Mark, I found your post comparing your GTPE and Premium:
https://www.macheforum.com/site/thr...emium-three-days-with-gt-pe.11151/post-293981

So in theory, the Non-GT Pro spring would lower my GT around 0.9" in the front, and 0.6" in the rear.

Hey Mike... Ok, so the Non-GT pro springs have LINEAR rear springs instead of progressive. They are virtually identical to the same as OEM springs being linear and about the same spring rate. The GT pro springs are progressive so therefore start out as softer than the OEM springs until you weigh down the car or start throwing it in corners hard. These are the springs I put on my GT which gave it a slightly softer ride. I believe this is why Erik is going to put them on his car for the same reason and believe this is what you are after also.

As far as "throw" them on, I hope I didn't give you the impression it is a super easy job. It is nothing like installing the sway bars (easy). I mean if you have tools like spring compressors, impact drivers and a lift would be nice, then yes it is not that bad but without, it will take you a better part of a day to do this (and some foul language here and there). For me, having done many (at least 20 times if not more) spring changes, it is an easy job. I would rate it more of a difficult job for one that has not done this before especially with standard tools.

Also, ERIK with a K is in AZ and has the GT pro springs he wants to put on his Premium and ERIC with a C is in CA and the one I put the lift springs on his Premium yesterday.

 

[HuntingPudel]

<SNIP>
I mean if you have tools like spring compressors, impact drivers and a lift would be nice, then yes it is not that bad but without, it will take you a better part of a day to do this (and some foul language here and there).
<SNIP>

In my case, a whole lot of foul language and tools thrown about. ??

 

[azerik]

Shocks smocks. Remember the Koni’s arnt factory shocks though. And the front struts, are softer (In hope) than GT struts. I’m not going for how much of a drop I can get vs how much softer I can get this to ride.
With the progressive rear springs it should help use the rear bar while lightening the horrible thwap thwap thwap I get from all the expansion cracks around here.
Eibach didn’t appear to design these with the use of the bars in mind. Hence the prem Eibach springs appear to try to do the job with the factory (weak) rear bar in mind by staying firmer and liner in the rear.

my MME appears to have moved to the body shop Friday. No updates from the dealer though.

 

[mkhuffman]

Shocks smocks. Remember the Koni’s arnt factory shocks though. And the front struts, are softer (In hope) than GT struts. I’m not going for how much of a drop I can get vs how much softer I can get this to ride.
With the progressive rear springs it should help use the rear bar while lightening the horrible thwap thwap thwap I get from all the expansion cracks around here.
Eibach didn’t appear to design these with the use of the bars in mind. Hence the prem Eibach springs appear to try to do the job with the factory (weak) rear bar in mind by staying firmer and liner in the rear.

my MME appears to have moved to the body shop Friday. No updates from the dealer though.

I agree. Shocks smocks.

I am going to run on the new Hankooks I just put on (255/45) for a while before I decide if I want to take the spring plunge. And "throw" them on. It's a three-hour job. Right Mark? ?

Sorry, man. I didn't mean to make it sound like it is easy. I know it is not. Actually, I bet the local shop will say it is a six-hour job. So $120/hr x 6 = $720 to "throw" them on.

Mark, Erik definitely owes you at least one Margarita! ?

 

[azerik]

We’ll see if it takes me 4+ hours to do alone someday. I’m missing my MME at this point.

 

[markboris]

We’ll see if it takes me 4+ hours to do alone someday. I’m missing my Mach-E at this point.

Erik, I mentioned I'd help if you could wait until the 9th of next month. Unfortunately that's the soonest I can come out. I know how it is though when you have something you want to install in your car. You want it done NOW. ?

 

[markboris]

I agree. Shocks smocks.

I am going to run on the new Hankooks I just put on (255/45) for a while before I decide if I want to take the spring plunge. And "throw" them on. It's a three-hour job. Right Mark? ?

Sorry, man. I didn't mean to make it sound like it is easy. I know it is not. Actually, I bet the local shop will say it is a six-hour job. So $120/hr x 6 = $720 to "throw" them on.

Mark, Erik definitely owes you at least one Margarita! ?

I think you are mixing up the Erik's/Eric's again. Eric (C) (Rickless) was at my place yesterday getting his lift springs installed. Erik (K) (azerik) has lowering springs and is waiting for his car to return from the dealer so he can install them.

And yes, Eric presented me with a very nice bottle of tequila yesterday so we are all good there. ?

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