I did 281 on my HR:

- Invidia Q300 Exhaust
- Injen Dual Intakes
- Uprev tune

And i have 4.08 gears, makes a huge difference on the HR...

 

whats the stock gearing?

 

3.5

 

Car goes in for Quaife Diff and 4.08 gears in Oct. Can't wait!

 

4.08FD + HR = Win

 

Your gona have a blast with the 4.08 FD installed!

Here is a pic of my Z, I'm done with mods for this season...lets see what next season brings ;-)

 

Awesome color! I've always liked Orange. Nice car

 

i had 4.08 in my '06 (which i wasn't to thrilled with it).... what makes them so much better w/ the HR engines.... is the powerband more suited to the 4.08's or the +500rpm to redline???

 

^that depends, what about the 4.08 did you not like? did you not like the top speed in each gear or the rpm's at your average cruising or you didn't feel that much of a difference?

 

You did Cams and valvetrain?

Did you do any engine work? Or just the Cams and Valvetrain?

Any dyno's?

Post up a review.....

 

I didn't feel that much of a difference in acceleration ..... I didn't mind the shorter gearing or my mph while cruising.....

Actually the only mod that seemed to have an effect on acceleration ( for the Rev-Up ) was the TT kit haha!

 

why do you say that? what makes the gearing so good??

The only thing I can think of is slightly better acceleration for decreased gas mileage. I mean if it makes that big of a difference then why didn't Nissan put it there in the first place..

Has anyone here actually taken their HR to the track with a 4.08 FD and seen a big difference?

 

Yes, Gooey. He had intake, exhaust, 4.08's, and DR's.......he ran a 12.94. I'll answer the rest of your question in the morning.....too tired.

 

The way to offset a short final drive is to add a really tall last gear in the transmission. The car can market itself with all the same acceleration as just having the shorter gear, all the while maintaining its highway fuel economy. It was simply just too much to change on a model that Nissan knew was on its way out.

EDIT: Nissan does know the final drive fact though. The 370Z and G37, use the 3.7 final drive gear for the manual. The slight reduction in gearing, along with the slight increased fuel efficiency of the VHR, nets no fuel economy loss in that configuration. However the 7AT, lower gears (1-3) when coupled with the 3.3 auto final drive, gives combined rates of a HR/4.08 configuration.

 

^^^Nice to hear about the 4.08's.... before I'd get them again I would like to hear from a few more people.... ( note** I did not see much of a mpg loss when I did it in my '06.... maybe 1-1.5 mpg drop?!)

 

I have Injen CAI, greddy Ti-C dual and uprev tune and i hit 284rwhp 255 at S&R in tampa... I want to add some HFC and Headers... I know it will put me over 300 or at 300

 

I have a 3.9 FD but using 275/40R17 gives me pretty much the same ratio of the 4.08 on stock rubber...
I never been to a drag strip but I go to few HPDE.

on TWS that I'm still learning big time (I'm still scared in some points) I have only 2 points where I keep the 3rd gear bouncing to the rev limiter because going to 4th and back to 3rd at the turn in would be actually slower... (but that because I'm too slow there)

at MSR houston the gearing was PERFECT. (for how perfect could be a non close ratio gearbox)

at GSS same as MSR, with the stock 3.5 I was "dead in the water" in two spots and with the 3.9 now I'm in powerband everywhere.

 

Nice. I have a Ti-C dual and injen intakes as well. I recently bought a set of Fast Intentions resonated test pipes, and im still in the process of getting a set of stillen headers. It'll all come together with an uprev tune sometime in the future.

 

agree to 4.08 fd best mod for the hr.
as i have my experience with my old 06 with 3.9fd.

 

I have :
K&N drop in filters
AAM Testpipes
Stillen Y pipe
Greddy TIC exhaust system
Zex Nitrous KIT
Cobb Tuning Accessport