altima coupe under rated?

[Hussain]

the Nissan Altima sedan has 270 hp. the coupe has the same engine and transmission and also has 270 hp. BUT the altima sedan has a more restrictive exhaust plus a resonator. This means that the only way the coupe and sedan could have the same HP is if the sedan has some extra stuff to add HP that the coupe doesnt have. but why would Nissan go through the hassle of doing all that to make it exactly 270 hp?

A better thing to do would be to just under rate the coupe. especially since the sedan came first. so maybe the altima coupe is really pushing 275-280 HP stock... just a guess.

[Mr.Coupe]

I have the brochure and Window sticker sheet from when I bought my car. They both say the 3.5 has 275 HP, but when I saw the 09 and 2010 now they say 270 hp so WHAT they lost 5 ponies? Weird

Ricky C.

[Hussain]

really? hmmm maybe the coupe has like 280-285 hp then

[blackteam02]

..under rated, & NO AFTERMARKET love! whyyy?

[dflane39]

..under rated, & NO AFTERMARKET love! whyyy?

I concur!!! When I was dealing with my fog light issue today I asked about getting a NISMO cold air intake......they don't make one yet and the svc guys told me to check back in 6 months! Not too mention when you see a Nissan commercial they are advertising EVERYTHING from the line EXCEPT the Coupe........we get no love or respect except from each other!

[sammyboy]

I concur!!! When I was dealing with my fog light issue today I asked about getting a NISMO cold air intake......they don't make one yet and the svc guys told me to check back in 6 months! Not too mention when you see a Nissan commercial they are advertising EVERYTHING from the line EXCEPT the Coupe........we get no love or respect except from each other!

Even when you look in the newspaper for "great finance or lease deals" the coupe is never mentioned or even shown.

[beeristasty]

... that the only way the coupe and sedan could have the same HP is if the sedan has some extra stuff to add HP that the coupe doesnt have. but why would Nissan go through the hassle of doing all that to make it exactly 270 hp?

A better thing to do would be to just under rate the coupe. especially since the sedan came first. so maybe the altima coupe is really pushing 275-280 HP stock... just a guess.

Or they're measuring hp at the crank

[Hussain]

thats irrelevant because at the crank or at the wheels, a super restrictive exhaust system on one is going to have less power then one with a less restrictive exhaust system.

[mcheddadi]

the Nissan Altima sedan has 270 hp. the coupe has the same engine and transmission and also has 270 hp. BUT the altima sedan has a more restrictive exhaust plus a resonator. This means that the only way the coupe and sedan could have the same HP is if the sedan has some extra stuff to add HP that the coupe doesnt have. but why would Nissan go through the hassle of doing all that to make it exactly 270 hp?

A better thing to do would be to just under rate the coupe. especially since the sedan came first. so maybe the altima coupe is really pushing 275-280 HP stock... just a guess.

on both car they have a 285 Gross HP. but when you take into consideration the exhaust and the accesorries they have 270 NET hp. both of them. the sedan has the same level of "restrictivity" when they did their fluid simulations.

[beeristasty]

I was saying they likely measure the hp on a test stand in their labs (without exhaust bits). Something like this

[Hussain]

well in that case, the altima coupe wouldnt be under rated but the sedan would be pushing less power then the coupe.

[LinkNuc]

They are both 270 at the crank not the wheels. Where are you getting this 285 gross HP rectal pluck?

[Throckmorton]

They are both 270 at the crank not the wheels. Where are you getting this 285 gross HP rectal pluck?

Where are the horsepower claims coming from you ask?

Hussain is able to boldly claim that the exhaust system is “super restrictive” because he is using the Friggamall Industries EyeBall 5000 Dyno. Friggamall guarantees 100% accuracy of the instrument, and has a lifetime no questions asked, money back guarantee.

If you possess the EB 5000, you automatically become an expert. An expert in the field of your choosing. Scientific proof is not required to make wild, undocumented claims. A mere gaze upon the exhaust system is all you need to boldly make claims, with absolutely no proof.

As an added note, Nobel Prize winner Al Gore used the EB 5000 to make claims that Global Warming was fact, not fiction.

We now know how that ‘Global Warming” thing is working out. No one has dared to question his work.

Poppycock and balderdash I say!

[Hussain]

HP numbers arnt always what the manufacture says. like BMW for example. the 335i SUPPOSEDLY has 300 crank hp and 300 crank tq. multiple people and magazines have taken 335i's to dyno shops and have dyno'd them only to find out its pushing about 300 WHP (which is about 350 HP). so just because a manufacture says its a certain HP number, that doesnt always mean it is.

Its hard to believe that the sedans exhaust is just as restrictive as the coupes without seeing some sort of graphs or paper work from Nissan. the car has an extra resonator then the coupe and is dead silent compared to the coupes stock exhaust. the more free flowing, the louder it is. if a car has no restrictions on the exhaust (open headers) its insanely loud. so with the sedan being quieter, it should be more restrictive.

[mrodrig2]

I was saying they likely measure the hp on a test stand in their labs (without exhaust bits). Something like this

://www.land-and-sea.com/images/dyno/auto/e ... n_cell_600

I used to work for International Truck, a lab dyno is exactly how they measure HP and rate their engines. All car & truck mfgs do it this way too. Same engine in the Sedan and Coupe, hence the same hp rating. Any numbers you see in marketing info or brochures are averaged out and fluffed to suit. None of their cars are exactly what they are rated at. And no two engines, regardless of whether they came from a sedan or coupe will both ever be exactly 270hp.

[CoupeVQ35CVT]

I don't think judging how quiet the car is because of the exhaust is a fair way to tell how restrictive the exhaust is (and therefore the reduction in HP). A resonator can be freeflowing like most aftermarket units, perforated core etc. that can help reduce the noise down quite a bit without the need for a highly restrictive muffler.

Also, the TWO hefty sized mufflers on the V6 sedan would probably have something to do with the reduced noise level vs the smaller SINGLE muffler setup in our V6 coupes. Larger mufflers in general absorb more noise so they don't have to necessarily be restrictive to do their job.

But yes I'm sure there is a small difference in power between the Coupe and Sedan version of the V6, but probably not worth noting so they stick to the 270 hp figure for marketing simplicity.

However, I wouldn't mind if they did up tune the coupes for a little more bang for the buck.. perhaps like someone else mentioned 280 hp for the V6 Coupes, and 190-200 hp for the 2.5? I mean the MSRP for the coupe is usually more than the same Sedan engine equivalent, might as well help us feel good about that by getting the extra hp, aside from the nearly insignificant 50-80 lbs weight difference, for 2 less doors.

[LinkNuc]

Throck I love you, In a Plutonic way, WTF does exhaust have to do with at the crank HP which is what we are rated at? Maybe I am misinformed but there is NO EXHAUST when they bench test these Engines...well except for a hose.

ANd yes no 1 engine is the sam as the other, but this might be the dumbest thread ever...ITS MEASURED AT THE CRANK, HELLO!?!

[Hussain]

ANd yes no 1 engine is the sam as the other, but this might be the dumbest thread ever...ITS MEASURED AT THE CRANK, HELLO!?!

no trust me, ive seen much dumber threads.... which have less a** hole comments too.

[fiveliterbeater]

........we get no love or respect except from each other!

you think you got it bad??? how about owning infiniti's current flagship car and not seeing any commercials for it whatsoever??? all i see is commercials for the dam G! i hate G's!!!!

lol j/k

[Hussain]

the M35/45 looks like a 04+ maxima from the back to me. I'm not a big fan of it in the looks department but its a good car with a nice interior. the 2011 or 2012 is supposed to be sick!