So I will probably be picking up a G37 coupe here shortly. I am aware of all the differences between the X and the S, and I don't need the X for inclement weather. Definitely getting a s/c and not a turbo. GTM looks to be making a great product, but I need California CARB approval so will likely go with Stillen.

What does everyone think: should I go with the X for traction purposes? (I will be upgrading suspension, wheels and bumper anyway, getting an auto trans regardless due to traffic, and can upgrade the brakes at some point, so those are all moot points with regards to the S vs. X). Or is there a reason to get the Sport? The car will be used for a dd, with several (non-competitive) autocross and track days a year. The car will likely be a 2010 if that makes any difference.

What do you think?

On a side note is it possible or has anyone modified the G37x steering to have the lower steering ratio of the S?

Thanks in advance!!

 

You forgot about the G37xS

 

The sport seats in the RWD model have more aggressive bolsters to hold you in place during heavier cornering. Depending on HOW much power you put down, I don't think you'll have a problem hooking up even with a RWD car. Wider wheels, the right suspension, and quality tires will make more of a difference than AWD vs RWD, in my opinion.

I found out recently that the 2012+ models have one difference that matters when putting down big power. Ron Bergenholtz was working on my car and noticed that there is a rubber bushing between the driveshaft and rear differential that is apparently not present in previous years. The bushing helps reduce shock loading to the diff and can help prevent your pumpkin from eating itself during heavy FI acceleration. Just a thought, since you asked.

 

It was my understanding that the XS is more of an appearance package for the S, with the XS lacking the LSD, big brakes, faster steering ratio, etc. of the S? I hope that I am incorrect about this!

Also, I am seeing there is only 1 vote in the poll so far; did you vote for the S instead of the X?

Interesting, thank you for your input. I am curious if this is truly a model year difference or maybe a base/X/S model difference or a M/T A/T difference, as it appears in the first page of this thread that there are pre-2012's with rubber coupling to reduce driveshaft vibration, unless I am misreading?

https://www.myg37.com/forums/engine-...hes-oh-my.html

 

Hmmmm, that's a possibility, but the shop Ron works at specializes in Nissan/Infiniti. I'm just passing on what he mentioned, it may be that the car he worked on earlier that day was the wrong version. Unsure, there's an easy way to check. Under the car, if there's an additional shield covering the front of the diff, it's there to protect that rubber bushing.

 

Well Actually it was not an appearance thing. I have every option the S models have and more with the AWD.

Maybe in the USA its a bit different but mine is a CAN model and has it all!

 

Oh wow? quicker steering ratio, LSD, and akebono brakes? Pretty cool, not sure but I don't think XS's have those options in the states, but I could be wrong.

 

You are not wrong.

 

Wow, That sucks!

Maybe you should by a Canadian car hahaha!

 

I thought that the xS coupes got most of the real performance goodies (Akebono's, steering ratio, suspension) while the xS sedans don't.

 

Yep, the US models G37XS "Coupes" do have the big brakes & firmer suspension, it's the G37XS "Sedans" that got shortchanged. So the XS coupe may be a good option for the OP as it seems to check most of the boxes in the wish list

 

If you're going for a G37X coupe and plan on supercharging it, there are only two ways to do it. Buy the Stillen kit, or buy the twin supercharged kit from GTM that mounts the superchargers up top instead of down low, where the drivetrain gets in the way of the normal mounting location for the single SC system from. The Stillen kit is weak compared to the GTM kit, but you won't have to to tranny upgrades to support the power.

Stillen kit will make about 420whp 330/340lbft tq without modding it.
GTM twin supercharged kit on a stock block can push 550+whp and 400+lbft tq. I don't doubt 600whp is possible with the smaller pulleys, but then you are really taking a risk popping the motor. Regardless, with the GTM kit, it's HIGHLY recommended you upgrade your transmission. It's definitely not carb certified either.