Sporty G37 thread

[12,000 RPM]

No I really am trying to decide between the two.

[68_427]

Subwoofer in the exhaust.


Soundaktor

[MrH]

Well, I tell you hwut. When I got back from my honeymoon with my wife my first thought wasn't to log on to the 'SPIN to seek the attention of another man But whatever floats MrH's boat

First time looking at the spin in a few weeks.  Couldn't resist pointing out silly sportyisms.

[SVT_Power]

You're trolling again, aren't ya?

He's gonna catch himself a MrH

[CaminoRacer]

I was kinda confused about the alignment thing too. Definitely wasn't clear.

[Cookie Monster]

I'd do subwoofer first.

[MrH]

I was kinda confused about the alignment thing too. Definitely wasn't clear.

- Buys stock G37
- Claims car is a handful in the rain
- Buy coilovers and installs them
- Claims the alignment fixed the issue
- Never had an alignment done before or after coilover install.
- Still riding on cheapo Chinese tires

  I just can't follow the thought process of sporty, as usual.

[12,000 RPM]

Yes, the change in alignment from lowering the car (more negative camber) seems to have added more grip at both ends. But I still need to get it properly aligned. Not difficult to follow, but for reasons previously stated you lose your ability to think and process information whenever we interact.

[12,000 RPM]

Finally worked through the algebra on the Helmoltz resonator equations.



This is the math/physics used to create these kinds of exhausts:



That little can acts as a resonator that cancels out drone. By being able to control the frequency and bandwidth of what gets cancelled out (since exhaust temps vary with operating and ambient temps), you can get a much more.... expressive tone without the drone. There are already several exhausts like this for the G but I want to design one to my own parameters (2.5" true dual piping, flexibility to add an X pipe and/or resonators down the line) for less than what these systems go for ($1000+). Gonna start with the piping and flanges feeding conventional turbo mufflers, and then get the Helmholtz resonator mufflers fabbed and try them out. Should be fun and hopefully cheap.

[Soup DeVille]

Yeah, getting custom stainless steel stuff fabbed up for you is always cheap.

[12,000 RPM]

Oh no we are going with cheapo regular exhaust shop piping. I never understood why people got shiny ass exhausts. As long as it's rustproof I'm good

[MrH]

Yeah, getting custom stainless steel stuff fabbed up for you is always cheap.

[12,000 RPM]

I never said anything about getting it fabbed in stainless steel.

[68_427]

A guy on the SVX page has been slowly adding them to his exhaust and it sounds amazing. 

[GoCougs]

Well, when I put a Tanabe exhaust on the G, it hurt part throttle response (esp. from a standstill) and it affected part throttle shifting (made it sluggish and hesitant). It wasn't huge but if you're a car guy you'll notice it. It did sound good however (better IMO).

[12,000 RPM]

Well, when I put a Tanabe exhaust on the G, it hurt part throttle response (esp. from a standstill) and it affected part throttle shifting (made it sluggish and hesitant). It wasn't huge but if you're a car guy you'll notice it. It did sound good however (better IMO).

Oooo that's not what I wanted to hear. Was it a full catback or just their axleback?

[Soup DeVille]

I never said anything about getting it fabbed in stainless steel.

My mistake. You posted a pic of a stainless steel exhaust as an example of what you wanted to do.

[Soup DeVille]

Well, when I put a Tanabe exhaust on the G, it hurt part throttle response (esp. from a standstill) and it affected part throttle shifting (made it sluggish and hesitant). It wasn't huge but if you're a car guy you'll notice it. It did sound good however (better IMO).

The most shocking thing about this is learning you replaced an OEM component with something from the dreaded aftermarket.

[Submariner]

The most shocking thing about this is learning you replaced an OEM component with something from the dreaded aftermarket.

the aftermarket^TM

[r0tor]

Oh no we are going with cheapo regular exhaust shop piping. I never understood why people got shiny ass exhausts. As long as it's rustproof I'm good

Nope, not stainless

[GoCougs]

The most shocking thing about this is learning you replaced an OEM component with something from the dreaded aftermarket.

And it turned out to be a terrible idea .

[12,000 RPM]

Nope, not stainless

[AutobahnSHO]

Like the weird resonators on intakes, I think it will take some work/experimentation to get it just right.

[r0tor]

Good luck with that... Especially on the inside of the exhaust 

[12,000 RPM]

First rain drive.... wow. Need new tires and an alignment ASAP. May have to move the new wheel situation up a lot sooner. Picking wheels is hard AF though. I wanted to keep it on the low but fuck it. All of these would either come in hyper silver or be painted to match the OEM wheel color in 19x9.5 or 19x10:

GT350 reps ($800 + tires):


BBS FI reps ($700 + tires):


Avant Garde M590 (HRE ??? reps... shown in 20".... $1200 + tires):


Niche Misano ($900 + tires):



I'm not really partial to any one way or the other besides the GT350 replicas. I might just get the FI reps... here is *approximately* how they will look on the G:



I still love how R35 GT-R wheels fit... but I'm not about that 20" life



What do you think

[r0tor]

A 10" wide wheel?  What are your trying to run, 300 section width tires?!?

[MX793]

Wouldn't go wider than 9 unless you're planning to run 275+ width tires.

[12,000 RPM]

Max recommended width on 9s is 265.

http://www.tyresizecalculator.com/charts/tire-width-for-a-wheel-rim-size-chart

I want to be in that recommended width range... not a fan of the bulged or stretched sidewall look. I'm looking to run a square 255-275 setup with BFG Comp 2 A/Ss. Difference between 255 & 275 is like $80 at all 4 corners.

[giant_mtb]

...but you said you wanted 9.5-10", not 9.

[MX793]

Personally, I'd go square 255s on 9" wheels.  Cheaper and more flexibility (can rotate tires front to rear).  A 255 with a decently sticky tire is more than enough tire for the G's power level.