No SRM here and I wouldnt mind losing cruise for tons more usable power. Did you make yhe swap before your built motor? I cant even get my car to hook 4th so I really see this as being a neccesity for the TT guys

Will this work also for g37? Also would it require to re-tune again?

I don't see why it would but don't quote me on that. I also would imagine you would wanna take a look at the tune as you will load up the motor more. Also just a guess im sure mr.squeeze can chime in more

Yes it will fit the G37 without a problem. I didn't get tuned right away it was fine when I went back to re-tune that was because I added the F.I 3 inch exhaust.


I swapped once my motor was built this was something I knew I was going to do. With the right set up alignment tires car not slammed I was hooking very good in the summer 570whp 2 gear from around 40mph or so.

Cool man appreciate you chiming in. Its on my to do list..

I would have to give up my SRM to go with a new final drive, which I would hate.

completely? he said SRM still worked I thought. Now I am wondering if my OSG diff will fit in that pumpkin..

REV match still works you will not have a problem with it at all.






You can use just make sure you get one that's made for a auto.

Putting this on my to-do list.

Think I found a diff from a 2005 G35, listing says AT (3.357 ratio), (locking). That's what I need right? Is this a DIY type install?

That will fit without a problem , if your going to DIY make sure you have help lifting the differential its heavy.Also if your going to just swap make sure it has a factory LSD by turning the axle stubs.

It may still operate, but it will be not be matching correctly. Changing the final drive would change the RPM/Speed ratios, which the SRM computer uses to compute the rev match. As far as I know, no one has figured out a way to change those values upon going to a different final drive.

Cool. I'll have to flip through the service manual. Maybe I'll buy the unit and get R/T to install it for me when I go for my tune.

Thanks!

I share your concern, it wouldn't be correct. This is what has held me back so far from changing my FD.

One of us around here should find time to put together a spreadsheet to display exactly how far off it will be. Perhaps in most cases, it might still come in a lot closer than the typical throttle bump from a heal/toe downshift anyway. I am not sure a few hundred RPM would make a noticeable difference.. but if there are scenarios where we are looking at 1200+ RPM off, it could become annoying or counter productive to leave SRM on.

I will say this much I have had it on my car since July of last year and my down shifts still seems smooth when down shifting. I use rev match all the time it may use the computer to compute speeds .

I will also say and its s fact my car is much faster with the 3.3 than the 3.7 its perfect for my power level . With the shorter gears was shifting way to much and traction is much improved in my opinion any Z over 550 whp .