Basically a stock sedan with only Z-tube and K&N panel.

100 degree day
55%.humidity
29.93 inches HD
650ft above sea-level
sae corrected

What do you guys think?

 

that is about the same as the 6mt coupe... right?

 

Thats great! Maybe they have more than the advertised 260hp, or at least the same as the coupe (I've read where dwnshft posted we really don't have as much hp on an engine dyno as nissan advertised)

 

wow...that is about a stock coupe's numbers....

i put down 238whp and 237lbs-ft tq bone stock.

i just ordered a 350z tube and a k&n....i'll have to see how much these will jack the numbers up.

 

solid! those are good numbers for the COUPE, great ones for a sedan.

 

re-affirming my belief that the sedan's 260 rating is baloney.........

 

I need help in how to read that DYNO sheet. When the DYNO sheet above says max RWD HP 238 as indicated in the first post, how does that translate into more horsepower advertised by Infiniti (260 for Sedan)?

Last time I checked 238 < 260.........................

 

The 238hp on the dyno sheet is to the wheels whereas the 260hp noted on the car specs from the dealership is crank hp, they are not the same ...remember there is always hp lose when getting the power to the wheels it is just a matter of how much.
Great numbers by the way.
P.

 

And also the G35 Sedan actually produces 280 hp, not 260. It is underated.

 

Average percentage of driveline loss for 6mt Z's and G's is 18%

280 minus 18% is 229.6


A historic review of baseline dyno's of 6mt sedan's support the fact that they make more power out of the factory then nissan publishes in the specs. Also explains the 0-60 time of 5.8sec and the 1/4 time of 14.2 (as tested oct 2003 car and driver) This does NOT make us better then any other brother vehicle, I could really care less about that, much respect to ALL I SAY!

 

if the sedans make 277hp already, then do the coupes already make 295? cause i've looked at the exaust on the sedans, and compared it to the coupes, and you can really see that we coupe owners have a very small pre muffler on the 1st section.... and the coupes sound so much better because of the air flow... somthing to think about...

 

Baseline dyno's on 6mt coupes and 6mt sedan's do not show a difference in power between the two cars. Infiniti's published specs for the 03/04 coupe is correct, not so for the 6mt sedan. 2005 see's them change the spec's to 277hp for the sedan, which I'll argue is what the 6mt sedan's have made from job one and no one would be the wiser had some of us not noticed all the base line dyno's floating around on 6mt coupes and 6mt sedans.

The sedan premuffler is a straight through design and it only makes a lazy "s" turn to switch from the middle to the side. It's highest crime, one that is most likely shares with the coupe premuffler is that the pipe narrow's from 65mm to 55mm from start to finish. Coupe mid pipe's on the sedan do not gain power, they gain a more pleasant exhaust note at idle to around 2200 rpm's where other mechanical sounds over ride it's sound effect. The real area that makes the coupe exhaust different is the muffler, where the couple get's a performance part and the sedan does not. Sedan's make do with the variable capacity muffler. And yet a sedan Stillen TD makes around 10hp, on the coupe will make 7hp, both vs oem (and that's real world dyno's, not Stillen's self serving holy grail results).

Again, this whole thing is NOT a this car against that car, just a revealing of factual data, I could care less otherwise.

 

how much does it cost to get your car dyno'd? i wonder where i could even get that done in raleigh, NC...

 

in around atlanta, its like 60 bucks for 3 pulls.

 

I wish there was a dyno arund here Once again, Great #'s. Also, alot of good info. I didn't know the average was 18% loss from the crank to the wheels.