RED_DET wrote:The only other car that shares the M37 rear suspension is the new Q50 and which was made first? The front suspension on the M37 is similar to the G35/G37. To my knowledge there are no companies making lowering springs for the M37x.

We have added the M37 (RWD) Eibach springs to our site for the

I'm using the Eibach springs on my M37X with no issues. As far as I know the only difference in the front shocks is the fork on the AWD to fit around the front drive shafts. Since the shocks are disassembled to replace the springs the Eibachs work.

GeneralTsou wrote:Hi all, new to the forum. I read somewhere that the BC coilover kit for the M37x is pieced together from other Infiniti cars. Is this true? I plan on lowering my "soon-to-own" M37x and I'm deciding between BC coils and just springs. I plan to get the sport 20"s.

Bang for your buck, get the Eibachs, unless you want to go really low. I'm considering switching mine out to coilovers but not for a while. I want to do exhaust and other stuff first. I did a full How-To on installing springs for the M37X.

wideopn11 wrote:

RED_DET wrote:The only other car that shares the M37 rear suspension is the new Q50 and which was made first? The front suspension on the M37 is similar to the G35/G37. To my knowledge there are no companies making lowering springs for the M37x.

We have added the M37 (RWD) Eibach springs to our site for the

I'm using the Eibach springs on my M37X with no issues. As far as I know the only difference in the front shocks is the fork on the AWD to fit around the front drive shafts. Since the shocks are disassembled to replace the springs the Eibachs work.

Good information to know... although Eibach doesn't actually list them for the X.

wideopn11 wrote:

GeneralTsou wrote:Hi all, new to the forum. I read somewhere that the BC coilover kit for the M37x is pieced together from other Infiniti cars. Is this true? I plan on lowering my "soon-to-own" M37x and I'm deciding between BC coils and just springs. I plan to get the sport 20"s.

Bang for your buck, get the Eibachs, unless you want to go really low. I'm considering switching mine out to coilovers but not for a while. I want to do exhaust and other stuff first. I did a full How-To on installing springs for the M37X.

Are you just on Eibach springs and stock shocks? My only reservation about doing springs is I'm afraid I won't be happy with the drop after it settles. That being said, I really like your drop (from the picture in your sig). Thats just about where I want to be. Not slammed but even wheel gap.

Yeah I'm on the stock shocks with Eibachs. The drop you see in the pics is it, pretty nice but def not slammed. Check my how-to for before and after pics.

RED_DET wrote:Good information to know... although Eibach doesn't actually list them for the X.

Correct, they do not list for X but hey, it works.

RED_DET wrote:The only other car that shares the M37 rear suspension is the new Q50 and which was made first? The front suspension on the M37 is similar to the G35/G37. To my knowledge there are no companies making lowering springs for the M37x.

We have added the M37 (RWD) Eibach springs to our site for the

Thanks for adding the link RED_DET

I wanna see pics bro as soon as it's done.

White-Rush wrote:I wanna see pics bro as soon as it's done.

Hopefully when I get home & get them Installed, It Will Be done bruh

Altered wrote:Just an FYI for anyone considering the Takeda's, I installed a set in my M37x and had no issues with the passenger side fitting, so no worries. RED_DET I do appreciate you warning about the install though, I was prepared just in case.

I hope to make the same intake mod to my M37. Did you notice any difference in engine sound, performance, gas mileage?

Talltexdriver wrote:

Altered wrote:Just an FYI for anyone considering the Takeda's, I installed a set in my M37x and had no issues with the passenger side fitting, so no worries. RED_DET I do appreciate you warning about the install though, I was prepared just in case.

I hope to make the same intake mod to my M37. Did you notice any difference in engine sound, performance, gas mileage?

Congrats, so you finally got the M37 over the M56? what color and so forth bruh, do tell? lol

Any feedback on performance gains from the intakes? I know there are mixed opinions about the actual benefit of this type of intake. It still looks awesome though.

The result of my research and review of dynos and info from engine experts:

Adding a CAI alone to your car without any other mods is useless. The only peeps who claim up to 30 hp gains are those who sell them, not those who bought one. On average it's less than 10hp - not even noticeable and the air temp is not affected much at all. If the CAI is part of a true uprev tune + plenum spacer, etc the gains in hp are much better - but not so much because of the CAI.

You must agree though, that they look absolutely brilliant! And the sound is also quite nice. Some peeps claim they get better throttle response but that could be subjective. For me, it still seems useless to do a CAI for the looks or the sound alone - I am the only person who sees what's under my bonnet and it isn't brilliant enough for the price you have to pay.

wideopn11 wrote:

RED_DET wrote:The only other car that shares the M37 rear suspension is the new Q50 and which was made first? The front suspension on the M37 is similar to the G35/G37. To my knowledge there are no companies making lowering springs for the M37x.

We have added the M37 (RWD) Eibach springs to our site for the

I'm using the Eibach springs on my M37X with no issues. As far as I know the only difference in the front shocks is the fork on the AWD to fit around the front drive shafts. Since the shocks are disassembled to replace the springs the Eibachs work.

Since the weight of an M37x and an M56S RWD would be nearly identical...could I assume that the spring rate of Eibach's would also work well with the M56S?

I have no information that suggests it would work.

I was just curious is this Steve's car from Louisville. I just purchased the car from Infiniti. Steve has been great to work with and it appears to have all the same upgrades?

You are correct.

I'm curious about the 20mm spacers you're running with the factory S wheels. Any problems with rubbing the fenders? I thought 20mm was pretty aggressive. Do you have any pics of the car down the sides to show the tire/fender ?

No rubbing, plenty of room.

that looks fantastic... nicely done

thanks for the pictures. Looks really good.
It may sound like an odd question at first......but since you're running 20x9's with a 20mm spacer......have you ever thought of running 20x10's all the way around? Maybe 20x10 with a 30 offset?

What do you guys think?

20x10 All around would look nice with a +30 offset...

Has anyone installed BC coils on an M56x, M56xS or Q70 5.6 AWD yet?

Yes, I just installed a set of BC coil overs on my 13 M56xS. Also went with the swift spring upgrade. Had them about a month so far. Very happy, and no problems.

Ohh sweet. I'm guessing you went for the spring upgrade due to the additional weight of the V8?

Altered wrote:Ohh sweet. I'm guessing you went for the spring upgrade due to the additional weight of the V8?

The Swift springs are a performance upgrade over the standard springs. Here is some info on the Swift spring upgrade I posted in the Coilover Spring Rates for M56? thread.

Debonair wrote:The Swift springs offer several upgrades from the standard BC springs. Here is a list from The Best Coilover Guiide: Swift Springs. Worth it? which is a GREAT read for someone considering coilovers. If anyone is I highly suggest they check it out.

Best Coilover Guiide wrote: -
Swift Springs offer solutions to the problems we didn’t know we had:
-

• >The spring rate is consistent throughout the stroke: they are more predictable and more comfortable.
  >The largest amount of stroke: they are thinner and stronger, allowing for less coils, which allows for a greater amount of room for compression.
  >They are more durable against loss of spring height. Cold wound springs break in, then wear out, eventually their uncompressed height become less, due to having constant weight on them. They just wear out faster due to being made of an inferior material.
  >They weigh less than cold wound springs. If you’re not driving a race car you might not care too much about this one, but in truth, less unsprung weight makes a huge difference in both ride quality and performance.

Best Coilover Guiide wrote: -
Swift Springs Summary
-
Common springs are made out of a silicone chrome material, because Swift Springs are stronger they can be made thinner and could be wound with fewer coils, greatly reducing weight and allowing for a larger and far more consistent stroke.
The results speak for themselves. If Swift Springs are available, they are worth the extra dollar...

YES, Swift Springs are Worth your Money.

Ugh, you guys are killing me lol, I want to swap my Eibachs for coils!!!

Very hard to beat the swift spring upgrade. Run those on my wife's G37.

does any company make chrome intake pipes to replace the stock rubber pieces? Also any high flow filters that are not K@N? thanks

RE: spacers

Opinions on which type to go with? Ones that replace the studs or ones that don't ?

tmf2004 wrote:does any company make chrome intake pipes to replace the stock rubber pieces? Also any high flow filters that are not K@N? thanks

I have to warn you about what you have probobly already noticed, especially coming from the 2GS Lexus world like me where the options are endless; there is VERY little aftermarket for the M37 and even less for the M56. As SwissCheeseHead once wrote: We're all very sad.