How fast stock 370Z really is and how will BERK and K&N's affect on that!
 

Since I'm measuring almost anything on the wheels and since I got brand new BERK catback with non-resonated test pipes and K&N intake in my hands, I decided to check how fast stock 2009, 370Z with 7 speed auto transmission really is on the straight line (before and after). Factory declares 5.3 sec. from 0-100 kmh. which I cannot agree since I'm faaar away from this number :shakes head:.
Car has about 45600 km. Sad thing is that I'm still on the factory Dunlop's Sport Maxx which are almost gone, but there is a still decent grip. New tires are also purchased.
So let's check it with the stock first...

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I've seen 4.7-4.9 done. Idk 5.3 seems a little high. It's dependent on launch.

That title "How fast stock 370Z really is and how will BERK and K&N's affect on that!" sounds like a research project.

I guess so. I would like to see the difference. Maybe a couple tenths lower with the mods. Should pull a little harder.

That was on 'light fuel load' too cos the warning light. :icon17:

The 370 is an awesome car and is indeed the fastest Z ever made... it's a shame there wasn't a turbo option like the older 300z's though. Adding a turbo to the car is cool, but it's expensive and some people do have the money to buy the car already with a turbo. It being an NA car only allows the car to be so fast without major money spent.

Wow, 4.7-4.9 sec. for stock, sorry but I really doubt in that. I've tried more that 10 times to accelerate from the dig, with traction ON, traction OFF, holding RPM while pushing brake on start, auto shifting, manual shifting, different tarmac, just everything, it just won't go under 5.7 sec. Put a Racelogic in that car and let us see.
Darko

I'm trying to stay as low, as possible on weight here.
Darko

no turbo = less expensive to insure

:driving:

Don't know about that my last car was turbo charged and direct injected and a convert made much more hp and torque than our cars stock. Rated at 270/270 and put down 245/255 to the wheels 15 psi. Tuned put down 290/355 at 24 psi to the wheels. Insurance was a ton less.

I think it is the claim this car makes 332/270 HP/Tq. I caculated a 21% drive line loss. My other car same weight rwd 11% drive line loss. No carbon fiber drive shaft, no super light wheels or rotors and using an Suv tranny and a ecotec 4banger motor for goodness sake!

I think this car actually makes 280/260 at the crank and Nissan is full of elcrapo!

Probably be one of those Honda things where they are BSing about factory numbers to sell cars. Which in turn gives us higher premiums. I'd rather have a car that actually sticks close to the numbers on the dyno. Instead of lying and causing us higher premiums!

Sad when I buy a new car now I'll have to get it dynoed before I purchase!

http://www.youtube.com/watch?v=1bUpL...e_gdata_player

http://www.youtube.com/watch?v=77Mst...e_gdata_player

Only way a z is going sub-5 is on a tack track/with rollout.

Believe me buddy, this videos are just for fun only, I'm speaking about real numbers here. Just for comparation, I'm near 220 kmh. on the tacho when Racelogic beeps for 200 kmh.
Don't get me wrong, I don't want to downgrade the Z here, since I got that car and I really love it, I just want to speak about reality.
Darko

Sub 5 second 0-60 stock(maybe 4.9?) would take a perfect launch, perfect shifting, and perfect conditions . .

Motortrend had 4.7
Edmunds I think 5.1
RT had 4.9
Nissan in the Euro market had 5.3 I believe

this is all off google and top of my head. .there was a thread on it a while ago

Rt, mt, and edmunds all use rollout.

0-100KMH = 0-62MPH = slower than 0-60MPH. You'd be surprised the difference 2MPH can have on a time.

European tests are done using 0-100KMH.

Journalists use GPS based equipment to measure distance traveled.

Journalists also launch using torque-braking on automatics (revving to 2.5K RPM before launch) or clutch dumping at 4K RPM on 6MTs.

1/4 miles and 0-60s are also measured with 1-foot rollouts, which is why when people try this mounted logging equipment they get results that are significantly higher than what people actually achieve on a real 1/4 mile strip. It's no myth that a 370Z can hit 60MPH in high-4s, easily. Just look at the 1/4 mile times some of these stock cars run, low 13s and high 12s?

Also, OP I see you are in an area of Macedonia that is 800-1000 feet above sea level, that hinders performance quite a bit. And I also doubt your petrol is as clean as what we have in the US, for example. So your car could be running on our equivalent of 90 or 91 octane.

Basically, there are too many factors working against you and the times you are hoping to achieve. Even your tires are different than what is offered in the US car.

Maybe 6 speed manual with decent tires can do something better, but not that much by my opinion. Anyway, my point was how much will be the difference (if there is any) on the same car with BERK and K&N's upgrade. Both items are in my hands and they should be ON this week, so I will posted the results.
Darko

Another thing, most mags did all of their reviews using a 6MT, which hits 60 in 2nd gear. A 7MT hits 60 in 3rd, so that requires 2 shifts, vs just 1.

Five feet of rollout? Not sure if serious.

True... few of this things may have affect... but a whole second, I can't easily agree with that. I only can say that I'm running on a Ultra 100S gasoline here, witch is exact 100 octane.
Darko

Not serious. I meant 1ft rollout.

100 octane in your country could be 95 in mine. We have different octane rating systems. USA uses AKI. I believe Macedonia may be using RON? Either way, you may still be underestimating all of the other variables.

Lots of factors involved. Even if it's really windy it can diminish performance. To get the exact performance of the vehicle it is usually done in specific conditions and location. Even the Bugatti high speed runs requires specific air pressures and wind speeds. Lots of things go into it. Just cause a car is stated to do 2.9 0-60mph doesn't mean it will do it every time. It's the conditions and driver and the car. Everything has to be perfect to get the accurate numbers.

First of all this wasn't the goal of this thread. As I mention before, I just wanted be sure how this moods will affect on the same car, on the same road, with same conditions. Mentioned performance were for the reference only. Maybe my car isn't that good and cannot perform as claimed, maybe I'm just a bad driver, I don't know. Anyway if anyone want's to prove the opposite, take the Racelogic and prove it.
Darko

Okay, I timed your runs myself. I can see the needle on gauge and I also know that immediately after shifting into 3rd a 7AT hits 60. I started the stopwatch numerous times the moment you launch the car and shortly after you shifted into 3rd. The result is consistently 5.2 to 5.3 seconds. A .6 disparity between your Racelogic and simply timing the tach and listening to the motor is unusual. I'd say the Racelogic isn't configured well or just not working right, imo.

My method may not be technological, but it seems more consistent.

As far as what you'll gain from mods. K&N filters won't gain you crap. They're just filters. An exhaust you'll feel, but no one can tell you what it'll do to these times - most people measure changes in dynos and 1/4 trackers. But the most important piece of the mod puzzle is the stock cats and an ECU tune which you'll feel the most.

I'm from Macedonia and I wouldn't trust the gas in that country.

Actually this is my second brand new unit, which I purchased in front on this new year from Vivid Racing, since my previous one fell off from my bike at high speed. It was still in working condition, but damaged from outside and I was doubting in the accuracy, so I purchased the another. Racelogic performance meters ($500 per unit) are very respected in this terms and I got no reason to suspect in this numbers.
Darko

Actually Octane has NOTHING to do with power,it is just to prevent knocks.

unless your running 87 octane which makes the ecu cut timing which directly effects performance so there goes your whole octane has nothing to do with power theory lol.

Post your elevation, temp, fuel type, tire pressure, tire make/model. If you are going for the fastest 0-60 times all those factors will come into play. Since you are in an auto the time is more a product of your grip which is dependent on the surface (street...cold/warm?) your tire temps...street tire? Drag radial? tire pressure, temp...etc...

If you are spinning you are obviously losing time so before you throw in the towel try noting down your parameters first. Also, you are better off going to a track which will hopefully have some rubber laid down and have some temp as well. Cooler temps mean harder rubber which means that you will spin. Of course, if you are doing this on street tires which are made for longer wear hence, harder compounds you will end up spinning and again...your times will not be very good.

Put some drag radials, warm them up, note the track, time, temp, humidity, and post up some times before/after your mods.

Good luck!

OP is probably thinking :yawn:

BERK is ON... :happydance:

http://i1132.photobucket.com/albums/...Z/DSC01343.jpg

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I will do some test runs today with BERK only, to check is there any difference (hoping there will be), I will post the times and video after.
Darko

all motor with bolt ons
12.42 !/4 mile. @114.3
0 to 89.4 miles per hour in the 1/8 mile 8.02 seconds/
7 AT.
what would the 0 to 60 be ?

Stock I ran 13.3, with HKS exhaust and Berk test pipes I ran a 12.9 just FYI






DAN

Are you guys pulling this times on a drag track or on the streets?
Darko

Wow! Your BERK exhaust has a beautiful look to it...

Done few runs today, on the same road, with almost the same conditions as previous time and all I can say is that I'm happy :rolleyes:. Only difference was... It was sunny... :p
BERK gives me a whole second down from 0 to 200kmh. and a tenth of a second down from 0 to 100kmh. On a distance timing, still stuck on 13,8sec. on 400m. :shakes head:

http://i1132.photobucket.com/albums/...Z/DSC01350.jpg

http://i1132.photobucket.com/albums/...Z/DSC01349.jpg

Sad thing is that I'm almost OUT of tires and still no sign from the new ones.

http://i1132.photobucket.com/albums/...Z/DSC01353.jpg

These are all of their times on the track...you know, the correct way to measure these kinds of stats. ;)

Those are drag strip times.