GEN 2 Installed SVC's Coil Adjuster System

[NWFreerider]

Raptizzle, did you calibrate the truck for the increased tire diameter? Also, any noticeable loss in performance with the 37s?
Sweet vid and the stance looks great. Got me thinking about 37s but don't want to be under geared with them.

 

[Copp5]

Did you have to do an alignment after installing these? Do you have to take the spring off? Definitely going to have to get on this waiting list

 

[Raptizzle]

Raptizzle, did you calibrate the truck for the increased tire diameter? Also, any noticeable loss in performance with the 37s?
Sweet vid and the stance looks great. Got me thinking about 37s but don't want to be under geared with them.

Thanks! I did not recalibrate and probably won't but that's more personal preference. The loss in performance is minimal but you gain all that back with a larger tire offroad. Bigger tire = smaller holes.

Did you have to do an alignment after installing these? Do you have to take the spring off? Definitely going to have to get on this waiting list

I'm getting an alignment today but that's more so due to the weekend shenanigans. Yea, spring comes off for the initial install.

 

[rms8]

Thanks! I did not recalibrate and probably won't but that's more personal preference.

"...personal preference" ??????

The ECU bases anything speed related on the rolling diameter of the tires. Your shift points are all affected now since you have a substantially taller tire vs. what the ECU thinks is there. And with 10 gears...that's a lot of incorrect shift points.

Don't know if you have the technology package or not, but *if* you do, now your adaptive cruise control is also affected.

It's not a personal preference thing. There's a lot more going on than simply an incorrect speedometer. If this was 1980, no biggie.

Just an FYI....

BTW, truck looks sick w/37's !

 

[Raptizzle]

"...personal preference" ??????

The ECU bases anything speed related on the rolling diameter of the tires. Your shift points are all affected now since you have a substantially taller tire vs. what the ECU thinks is there. And with 10 gears...that's a lot of incorrect shift points.

Don't know if you have the technology package or not, but *if* you do, now your adaptive cruise control is also affected.

It's not a personal preference thing. There's a lot more going on than simply an incorrect speedometer. If this was 1980, no biggie.

Just an FYI....

BTW, truck looks sick w/37's !

Did it even shift correctly to begin with?

I don't use cruise control #becausebajamode

 

[svc]

"...personal preference" ??????

The ECU bases anything speed related on the rolling diameter of the tires. Your shift points are all affected now since you have a substantially taller tire vs. what the ECU thinks is there. And with 10 gears...that's a lot of incorrect shift points.

Don't know if you have the technology package or not, but *if* you do, now your adaptive cruise control is also affected.

It's not a personal preference thing. There's a lot more going on than simply an incorrect speedometer. If this was 1980, no biggie.

Just an FYI....

BTW, truck looks sick w/37's !

We are currently working on our new Tune for the Gen2 trucks and it should give really good power gains, plus allow for tire size, tpms and such to be changed via the handheld.

With regards to how Raptizzles truck feels post 37's? I drove it before the 37's and after 37's. I can't feel a dam bit of difference with regards to shift points even though there are shift point changes based on the new tire size, they are so negligible in feel that neither one of us noticed them.

 

[Tonecapone]

We are currently working on our new Tune for the Gen2 trucks and it should give really good power gains, plus allow for tire size, tpms and such to be changed via the handheld.

With regards to how Raptizzles truck feels post 37's? I drove it before the 37's and after 37's. I can't feel a dam bit of difference with regards to shift points even though there are shift point changes based on the new tire size, they are so negligible in feel that neither one of us noticed them.

With 10 speeds and a 4:10 ratio that makes sense.
Tone

 

[Bark beetle]

With the truck already setup for 34.4" tires from the factory, jumping up to 36.5" tires results in a 6% increase either using the diameter or the revs/mile on bfg's spec sheet. Going from 32" to 34.4" on my Tundra was a 7.5% increase and still made a minimal difference. In fact the speedo was actually accurate with the larger tires as the Tundra and my Raptor are a couple mph low around 55-65 mph.


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[Aaron]

With the truck already setup for 34.4" tires from the factory, jumping up to 36.5" tires results in a 6% increase either using the diameter or the revs/mile on bfg's spec sheet. Going from 32" to 34.4" on my Tundra was a 7.5% increase and still made a minimal difference. In fact the speedo was actually accurate with the larger tires as the Tundra and my Raptor are a couple mph low around 55-65 mph.


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This was my experience too. I was a couple mph slow with 315s and with my 37s I ended up a little under a mph fast.


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[Raptizzle]

So pretty much Ford wants us to run 37s.