Those 370 numbers are disappointing and I am talking in the relative sense, not the absolute sense.

Where are your numbers for an HR engine (07-08)?

If I remember right, my stock 07 HR 6mt put down 20 HP more than my wife's modded 06 rev-up 6mt - same dyno, same day.

So bottom line here is that the 370 makes only 4 more HP than the HR 350?

Of course your dynos are not done on the same day, so maybe that's it. Maybe the 370 has more drivetrain loss.. ??

Nice dyno vid. you can hear the Nissan DNA. It goes back a loooong way YouTube - 1988 Nissan 300ZX SS on the dyno

Obviously can't be this one. :rolleyes:

http://tbn3.google.com/images?q=tbn:...335_2898_l.jpg

What makes this dyno pointless? People keep on forgetting the main reason behind a dyno is for tuning purposes. Numbers are just numbers. What really matters is how those numbers change within the same dyno during any modifications.

A dyno is only pointless if you're just looking for a "number".

If the 370Z read 310 whp in a dynapack, then read 240 in a mustang dyno, does that make any difference?

One of the better dynos out there for tuning is a dynapack, which just happens to read higher than most dyno's out there.

One of the many reasons why dynapacks are great is because they are very consistent. I have never seen that consistency from any other dyno. Not only that, but the fact that they read off of the hubs really shows how specifics mods affected your cars performance without having other variables such as a change in rotational mass (ie. just happened to get a new set of wheels that are heavier) skewing the effects of engine modifications.

I'm not saying other dynos aren't good for tuning but its great to avoid all those other variables when someone is tuning a car.

Speaking in general and not directing this to anyone... people these days care too much about "numbers", specifically peak numbers, without really understanding what they're really looking at.

why was this test done in 4th gear instead of 5th?

the Z34 should be able to go to 7300rpms at 155mph, 200rpms short of redline.

^^^ Good question. 5th is 1:1.

I could not agree more. If you are really concerned about high dyno queen numbers, go find a high reading dyno. For tuning, as long as you have a baseline and a final number, most any dyno will do the job. How the numbers change before and after modifications on the same dyno is all that matters.

On most 6-speed cars, the difference in numbers between 4th and 5th is negligible, if any. We did test in 5th as compared to 4th on one pull and it was exactly identical. Other cars, not just Nissans, have shown the same thing for us. Using 4th as opposed to 5th goes a little quicker and puts a bit less stress on the engine.

For what it's worth, we were able to achieve similar results yesterday, proving the DD's consistency. We decided to test XXX Racing Fuel's 138 octane oxygenated blend. It was good for a 14whp gain through much of the powerband. Not bad for just adding some gas!

Full story and video on our blog: XXX Racing Fuel gains 14whp on stock 370Z : Injected Performance Blog

http://farm4.static.flickr.com/3385/...e178c4d934.jpg

wow, that's pretty impressive! where can I find out more info on the XXX race gas that you used?

Interesting. I think over here (without going to a boat-yard) we can only get up to 105 octane. But either way, not bad.

i didnt speak on dynapacks as i have no experience with them :tup:

give me a break im only 19 :icon14:

Now I have a headache. I got mine tuned on a Dyno Dynamics after throwing on K&Ns and Stillen Exhausts, I ended up with 286.3whp... How much is that in HP if stock runs at 258whp?

Wow, this thread is old... :tup:

What was "tuned" on the dyno? Did you baseline it before the mods?

ECU was tuned