Longer runners, but the only thing that really makes it better than the stock manifold is the dyno results.

OP, 5th gear is 1:1 for the m6. I don't know guys, I'm still not sold. In the OP's case you're looking at the cost of the part, the install, and the retune. I'd estimated you're looking at anywhere between $800-$1000 and you're actually losing a few ponies. Granted the loss is up top but it still seems like a a lot for ~12lbs/tq in a limited window of the powerband...

^^^
I'm kinda with you on this one... seems like for something an intake manifold to be worth that much you should gain significant power throughout the entire band. For that price you shouldn't lose anything, anywhere.


I'm not bashing Motordyne at all, I tip my hat to this, it's really interesting that it works like it does, but you'd think it would be a little more significant for the price.

Has anyone cut open the stock intake manifold? I'm sure there has to be some room for improvement over the VQ37 one... instead of reverting back.

I think this is a mod for some, but not for all depending on what your driving style is. If you want to fattened up your mid-range, this is the mod for you. If you plan on spending your life at the red line, maybe this is not the mod for you.

Many of the track/autoX guys may want more of that midrange power as that is where they spend their life more so on the track.

Who doesn't want more mid range? ;)

Why can't it make power everywhere...?



I would like to have my cake and eat it too... :icon17:

I hope someone makes a lower intake manifold that has been ported since my understanding is that is a big limiting factor in the intake system on the VQ37 engine.

You greedy bastard!! :happydance:

from what I did during my DIY on the 350hr intake swap is that the lower intake manifold on the 37vhr is quite smooth to begin with and porting it wouldnt give a big difference.

im not an expert but where did you heard about this ?

5th gear loses power on the dyno, so no 4th gear is closer 1:1

Automatic guys run 5th gear in DS mode which is 1:1.

Hi Guys,

I'm looking for some information on the gearing that will help me do some more detailed analysis on the power curves.

Assuming you shift at redline in a 1/4 mile race what is the entry RPM of each gear as you shift through all the gears?

Example:
When you are in 1st gear and punch it all the way to redline and then shift into 2nd gear, what is the new RPM as you enter into 2nd gear?
What is the entry RPM for each successive gear assuming a shift at redline each time?

Is there a table posted in this forum?

Thank you,
Tony

You have PM!

Tony,

max mph in each gear (approx.):
1st --- 42 mph
2nd --- 69 mph
3rd --- 99 mph
4th -- 126 mph
5th -- 161 mph

1-2 shift ==> 4600 RPM
2-3 shift ==> 5200 RPM
3-4 shift ==> 5900 RPM
4-5 shift ==> 5900 RPM

I still think you're wrong, I did my first dyno run in 4th and it was the lowest reading. All subsequent runs were done in 5th, the only thing that people would want to look out for is to keep from having power cut once the car hits 155mph on the dyno, other then that, 5th gear is a 1:1 ratio.

Gear Ratios (Manual)
1st 3.794
2nd 2.324
3rd 1.624
4th 1.271
5th 1.000
6th 0.794
Reverse 3.446
Final Drive 3.692

You should have to worry about hitting the limiter unless they failed to remove it during the UPRev tune.

He has a g37. maybe its diff in that car.

Thanks for the gear info guys. I'm working it into the plots now.