Altima coupe's HP and torque chart

[mcheddadi]

* The gross figures indicated above are measured for engine alone, whereas the net figures include the horsepower/torque of an engine with themuffler, radiator, and other components needed for actual operation on a vehicle. Hence, net figures are smaller than gross figures.

That means that the max power we can get from bolt on mods is 15hp! one more reason to invest in TURRRBBBOOOO!!!

[AltiCoupeDriver]

Nice find, but one thing.... Kg-m eh?!?! Oh you Canadians.

Anyway, is it true about the bolt-ons?

[Hussain]

so that means at the track i'm running like 285 hp when i take off my muffler, not bad........ gross is with headers on though right?

[TheBourneAltimatum]

eh you can get more than 15 whp from boltons, its called e mannage or SAFCII Neo

[Scandinavian Flick]

question about the "gross" horsepower, now if that is measured with out an exhaust intake or any of the things that a car must have, wouldnt the engine not produce an accurate figure do to not having any back pressure from the exhaust, because on any N/A car if you remove the exhaust manifold the car will produce less power, because some back pressure is better then none,

[Scandinavian Flick]

and also, who writes "Revolution ( X 10 squared RPM) why not just write X 100 RPM

[headhunt3r]

and also, who writes "Revolution ( X 10 squared RPM) why not just write X 100 RPM

Scientific notation is pretty common in any graph?

mcheddadi: Just curious, any way to get the same graph of the 2.5 as well?

[adidas2go]

You can get more that 15 whp from bolt ons. Right now thats about all you can get, but with the right flow setup, you can get around 30 whp with a tune im sure

[JDRosenberg07]

id like to know about a graph for the 2.5 as well.

and i dont know, id hope that we could get more than just 15 hp from an I/H/E at least. Not much more but maybe 20-25, not to be too hopeful tho

[mcheddadi]

bump! so yeah, the more I see bolt on being released for the car the more I think about this. If the above dyno run is to be believed, our stock motor on a stock tune with the Y-pipe is running almost to its full potential. Since its 285hp for the engine alone and that the y-pipe adds ~13hp to the 270hp, there is only 2hp left to gain from anything else to get to 280hp.

what do you guys think?

[Boilermaker318]

So the only restriction that our engine has is the Y-pipe section of the exhaust? It seems unlikely...

[DAAN.]

That means that the max power we can get from bolt on mods is 15hp!

Your logic is correct, which is good, as it means that the residual loses are <10%.

[mcheddadi]

So the only restriction that our engine has is the Y-pipe section of the exhaust? It seems unlikely...

then you come up with a theory to explain the chart from nissan

[Bmore-coupe]

This seems to be happening more and more

[marvin5087]

15 hp?....negative im sure we can get more then 15 from bolt ons..

[mcheddadi]

15 hp?....negative im sure we can get more then 15 from bolt ons..

being sure about something doesn't make it true, it's like being sure Santa exists...

don't know if you saw was I posted in OP.

The gross figures indicated above are measured for engine alone, whereas the net figures include the horsepower/torque of an engine with the muffler, radiator, and other components needed for actual operation on a vehicle. Hence, net figures are smaller than gross figures.

so unless someone find up something, max hp gain from intake/exhaust type bolt-ons is 15hp

[2008AltiCoupeDan]

being sure about something doesn't make it true, it's like being sure Santa exists...

but... Santa DOES exist.....

.

..

.YES HE DOES AND SO DOES MORE HORSEPOWERRRR!!!!

[blackteam02]

THAAAAATS F**KED UP IF THIS IS TRUE, IF WE TOP OFF @ 285HP WITH BOLT ONS!! WTF?!?!

so that just means all these bolt-ons like underdrive pulleys-intakes-exhausts-ypipes etc. dont mean 'ISH---are'nt worth buying cuz all we really gonna get is 285hp?!

. . . damn . . .

[mcheddadi]

only exhaust mods according to that graph, not underdrive pulley, camshaft, plenum spacer, etc.

[blackteam02]

. . . ok, so graph's were from a qv35de with an exhaust mod..so from your last post we CAN go higher than 285hp with just bolt-ons?? or are my English reading skills off and i aint understanding?

[Chuck2417]

I really hope that our cars don't stop at 285hp... Like Blackteam said it would be pointless to buy any mods then. But if that is just with exhaust then that's pretty good (+15hp from exhaust). Can someone please clairify these results? I am also confused here.

[mcheddadi]

engine floating in the air with fuel delivery makes 285hp, engine with intake headers ypipe, exhaust, radiator etc = 270hp. thats what it means

[blackteam02]

. . . .SOoOoo, 1 or 2 mods are about all you really need right? cuz we max out bolt-on mods @ 285hp. vq35de's are garbage if thats true.

[rich2342]

I believe this to be bunk..

If headers and y-pipe are ever produced along with a decent tune the vq should be close to 300hp...

[Flypinoy457]

engine floating in the air with fuel delivery makes 285hp, engine with intake headers ypipe, exhaust, radiator etc = 270hp. thats what it means

Also have to consider the power lost to CVT transmission, my guess that would be anywhere in the range of 5-8 hp depending on heat and other factors. Yet another reason why I'm glad I waited for a 6 speed.

[rich2342]

I believe this to be bunk..

If headers and y-pipe are ever produced along with a decent tune the vq should be close to 300hp...

Another point we have is the fact that 3rd gens and maxima's are well over that for crank hp. There is no way nissan would produce higher rated engine being tuned almost to its full potential..

[Curtieson]

so unless someone find up something, max hp gain from intake/exhaust type bolt-ons is 15hp

Can I quote the forum? Is that credible?

From a manual dyno, - the 5% more loss from the CVT, and you will have a close to accurate hp readout. Speed Force Racing got 420hp outta there last Altima kit

From the 2.5S Turbo Interest thread (started by Stillen)

it is like using Wikipedia as a reference! It has to be true!

[blackteam02]

. . . .SOoOoo, 1 or 2 mods are about all you really need right? cuz we max out bolt-on mods @ 285hp. vq35de's are garbage if thats true.

[Loop]

Do we have a link to where this chart came from?

[mcheddadi]

Do we have a link to where this chart came from?

page 5

http://www.nissan.arabianautom...t.pdf