The 5zigen Pro Racer EX-I will perform like the best in the test. But the price is far from reality!

 

I contacted 5Zigen via e-mail and I got a response that their exhaust for the 350Z is not available yet in the USA and that the system that SportZ Magazine used for the test was a prototype. I wonder if their finished system will yeild different results on the dyno??? I can hardly imagine ANY company putting out a product that actually causes a loss of hp!

-Chris

 

Congrats! How did you make the magazine? Did you contact them?

Jeff

 

OMG, how did that happen? We never add A$$Monkeys to our pages. Heads are gonna roll.

Eh, eh, eh...

Bob

 

hahaa, it sucks for you 350z owners that your cars are tuned so much already. personally, i have a g35 and a simple intake upgrade gives me 11 hp. and exhaust upgrade yields another 15-20 ( i have a sedan). it feels good to get more hp for my money. still wish i had the low seat of the 350 though. stupid sedan feels really high...like a sedan.

 

Were those dyno proven on your car?

 

Spoken like a true SEDAN driver... even with your added 30hps... you'll be seeing my L-Plate...

 

Turbo magazine did a big story on dynoing the same car at 6 different dynos and you would freak if you saw the difference in the gains. They're all over the board. Who the h$ll do you beleive?? There was even a difference on the same dyno with 2 different operating systems - mac and pc..... I **** you not!

 

Ahhhh the cover had something like "Dyno Dash" or s'thing like that. Maybe May issue??

 

Did you guys know the dyno shoot out tests were done in 3rd gear? I was surprised to see how low all the results were. I expected the #'s to be way high since all of the pulls were done in 3rd. I mean, unless I am wrong, wouldn't pulls in 3rd show bigger gains than pulls done in 5th's 1:1 ratio. Some of you might remember my Borla pulls were done in 5th and I got a 10.6 whp gain and it was close to 9 ft lbs of torque gain. So, if all the pulls for the shoot out were done in 5th's 1:1 ratio then we would have maybe seen all of the systems take whp losses??

Maybe something was wrong with that dyno. Maybe that's why they pulled in 3rd gear.

 

the intake dyno actually was proven on my car. as for an exhaust, i have yet to prove it, but be assured, it will be soon. but it is logical that the sedan should benifit at least 15 hp. the coupe and 350z generate more hp due to their dual exhaust. the sedan's single exhaust is pretty restrictive and changing to a true dual should boost hp dramatically.

 

well, that really depends what mods you have as there isnt a turbo out yet for the sedan. if we both were to have an intake and an exhaust, and i had the same ecu, i believe i would actually SMOKE you or at least we would be head to head. i remember seeing that the 350z is heavier. if so, then i should be a bit ahead.
and anyways, my post was about getting more hp for the money in aftermarket parts. dont get too scared.

 

how about N1 exhaust?? is it in the mag.??

 

Ha! and people were dissappointed from seeing 5-6 whp from my Y-pipe that Acosta Racing made.

 

Sorry to go off the subject but this car just screams classy! Nice wheels, wing markers, etc, etc...

 

All things being equal (e.g. driving ability, traction, ...), the Z will leave you behind. The Z is actually lighter than your sedan (3197lbs vs 3336lbs), so you'd actually need about 300hp to equal his wt/hp ratio. Theoretically since your G has the same engine, you should be able to equal his output once you eliminate the limiting factors, but you're still carrying the extra lbs. Regretfully, I'm stuck in the same boat (literally!) with my 6-spd G. I'm making much closer to the same output as the Z, but my cars ~100lbs heavier than your G! I guess I'll have to hope for a hole-shot.

 

This is just an observation/question to the above quote. Does the 350Z really have a "dual exhaust"? I ask because after being under my car it has only 1 pipe leading to the muffler which then has 2 tips. Seems like it's "simulating" dual exhaust rather than actually being dual, but I could be wrong and I admit that.

Here is another question. What is the difference between hp and torque?? Which is it that you "feel" the difference in when you add performance modifications?

-Chrismcagle

 

The Z's stock exhaust is single with two tips. It still seems pretty well designed since aftermarket exhausts don't give gobs of power.

Torque is a twisting force (force*distance), and HP is power. Power is a measurment of the amount of work (force*distance) performed in a given amount of time. Notice that torque and work represent the same thing (force*distance). Therefore, power also represents the amount of force generated in a given amount of time. This is why you have more power at higher RPM's. You are generating the same torque, but since the engine is spinning faster you are creating the torque much more quickly and are therefore creating more power. HP = TQ * RPM / 5250

That torque from the engine then gets routed through the gears to the rear wheels where the tires exert a force on the road to move the car forward. At the end of the day, the car's ability to generate the force on the road is best represented by HP because the gearing can be used to modify the Torque and RPM but the power stays the same. The only way to improve "overall" performance is to increase HP. That can be done either by increasing torque or by maintaining torque and increasing RPM (or at least by increasing RPM faster than the torque decreases). This is why most mods see the biggest HP gains at high RPM's, even though they might give a consistent gain in TQ.

Things get complicated because cars have fixed gearing and therefore must generate power at various RPM's. Therefore, adding low end torque, which may not change the peak HP, will increase the HP at lower RPM's which will help acceleration when the engine is operating in that range. This means that you could also change the gearing for low end acceleration, but you will be reducing the speed in each gear that the car is able to acheive. The torque has been increased and the speed has been reduced, but the power is still the same.

That's why the best indication of acceleration is HP/weight.

-D'oh!

Oh, hey, back on topic, has anyone in the US tried out that High-Tech muffler that the Austalians seem to like so much? That thing seemed to be pretty impressive.

-D'oh!

 

Lame.

That's like saying "haha your cup sucks because it's completely full of beer, but mine is only half full so I can buy more beer and add to it, while you can't add any beer!"

Sorry, my beer glass is full. I don't need to buy more beer. :-)

 

Chris --- We have a pipeline direct from Sport Z Distribution to Courtesy Nissan. When Courtesy needs another thousand issues we open the pipeline and the Courtesy warehouse is fully stocked. They love Sport Z and we feel the same about them.

If you guyz out there would like additional outlets for Sport Z, talk to your local Nissan dealerships and beat on them until they do the right thing.

Don't you think Nissan USA should "encourage" all their dealerships to get on board?

My $0.02

Bob