I have not scanned the results yet but the best pull was 197.4 HP and 218.9 TQ SAE. I did the dyno at Excessive Performance in Houston. I will try to scan the results in by Monday.

Can someone please tell me if these are decent numbers?

Btw, I have a Stillen HF Intake.

 

Seems normal, but i guess, normal, oh yeah, you're auto too, so yeah seems about right.

 

You're losing abut 22%, whic is about normal. U should run it with and without the intake and see the difference.

 

Yeah, I wish I would of run b4 the intake.

The 22% seems right on the hp, but what about the TQ?

 

Do I figure a 22 or 25% loss to the front wheels?

 

well, if it's the same 22% than that means you're putting out ~283 ft/lbs @ the crank, that's good!

 

That's not 22%. 22% of 255hp would be 198.9hp and 22% of 246ft-lbs would be 191.88ft-lbs. But I don't know if the percentage also pertains to the torque numbers. The torque is definetly there though.

 

hp seems to be about right on..... torque is up there..... thats a lot of torque

 

yeah, but if his 218 tq reading was same with the 22%, than that means hees outputting 280+ ft/lbs, right? Forget about factory #'s on that on

 

That's exactly what i was saying after i posted my dyno run a couple of months ago!

That the torque was higher than (what i think) Nissan is saying. I even stated the theory that perhaps Nissan made a boo-boo and installed the Pathfinder's engine in our Max's.

 

I did a search and saw your comments to that effect. I am surprised my hp #'s were not higher with the intake, maybe 7-9 anyway.

 

The Dyno measures torque and computes HP from the torque. The torque and HP therefore have to be off by the same amount. If the cars HP is off by 22% then the torque is only off 22%. This means the engine has more torque than Nissan says it does.

Stereodude

 

Which is good! I love torque!

Torque-steer, OTH, is another thing To this date i still wished i've gotten the TCS.

Then again, it's still cool. Everytime i spin-out the wheels from a stop everyone just seems to back-out

 

Take my dyno run with oh, a cup of salt It was done in the wrong gear anyway and it's not SAE corrected either.

Btw, where's that shop you dyno'd at? How much did they charge? I"m thinking of redoing my dyno.

 

Excessive Performance on Richmond Ave. in Houston. They normally charge $65 for 3 pulls, no tuning. More if they tune. I got a little better deal because I prepaid for another 3 runs. I am doing another....uh....mod and will dyno again afterwards. I'll update the org.

 

Your right! I can absolutely torch the wheels! Some of that may be due to the sucky Potenzas. I bet that torque is fun on 5sp 2k2s!

 

Good dyno numbers. I've been wanting to see STOCK dyno numbers for the Altima and the Maxima. I know that certain people have been to the track and put down 14.3-14.x times. I don't care about who is faster - I'm not caught up in that. I just want to see how the engines differ in HP and TQ on a dyno! Thats the comparison I'm looking for.

Here are my own stock numbers for my 2002 Altima.
My 2002 SE Altima Dyno Runs

If you got dyno numbers then post them. I'd love to compare and see how much of a DIFFERENCE Nissan really made.

Not coming over here to start no ish. I've been enamored with the Maxima since 1995. I definitely wanted that car, but did not have the money at the time. No disrespect to 5th Generations, but I only started paying attention when the 2002 Maxima due to the more aggressive front fascia.

I still have a 1991 Sentra, and had a 1991 240SX coupe before.

One Love Nissan!

 

Those are great numbers on the Alty, stock at that!

 

Thanks man, great numbers on yours too. I'd love to see MORE 2k2 SE Altima and Maxima runs as well... Lets find out if Nissan truly made a 15HP difference as they claim.

C'mon people, it ain't that expensive... You bought a $20-30,000 dollar car - whats $45-$100 dollars for a few runs...

 

You're really pushing through with that Y-Pipe eh?

Anyway, when are you doing another run? Perhaps we can do this together and get a discount?

 

Those are VERY nice numbers. You almost have more torque than me.

 

Not to rain on anyone's parade, but you do realize you're looking at a 5 speed 02 Altima and auto 02 Max and they dyno the same (more or less). That would seem to suggest the Max has more power like Nissan says.

Stereodude

 

i just recently noticed your dyno numbers NICE!!!! when is the first track visit?

 

The % loss is correct... about ~15% for manual and ~22% for auto.

Max does 255 at crank
Alti does 240 at crank

 

I meant that the Maxima has more torque than Nissan says it does. I agree that the HP appears to be what Nissan says it is for both cars.

Stereodude

 

i'm dynoing my car stock for 2 runs then with the intake for 2 runs tomorrow morn. result i can't wait to see.

 

looking forward to the results

 

I can't wait either! .

So it look's like the max has more power then the Alty, cough dave cough . My case will be closed after tomarrow thanks to Steve .

 

This is something that I posted on my boards about 4 months ago. Keep in mind that it is refering to the Ford 2.5L Duratec V6 and the MTX-75 and CD4E transmissions, but the principles are universal:

My figures are based on existing dyno data and factory supplied ratings. Factory horsepower is rated at 170hp and factory torque is rated at 165ft/lbs. ... these figures are at the flywheel. Many people from many different parts of the country have dyno tested their MTX75 equiped Cougar/Contiques while still in stock form and have produced an average of 140hp/140tq. Same holds true for CD4E equiped Cougars/Contiques which average 120hp/??tq. I can not confirm the numbers without finding the dyno graphs, but I distinctly remember these numbers. Since I am unsure of the tq rating for a stock CD4E, we will only be examining horsepower ratings.

This equation will be used:
Driveline Loss % = (factoryhp - dynohp) / dynohp * 100

Equation explained:
Driveline Loss is a percentage of power lost when comparing two figures, dyno data both at the flywheel and at the wheels. If we subtract the dyno horsepower rating from the factory hp rating, we are given the amount of horsepower lost through the Driveline. Now we simply devide that number by the factory horsepower number to get the percetage.

MTX75
(170 - 140) / 170 * 100 = 17.64705% Driveline Loss.
(170 - 140) / 140 * 100 = 21.42857% "correction factor" (not sure of the real term).

CD4E
(170 - 120) / 170 * 100 = 29.41176% Driveline Loss.
(170 - 120) / 120 * 100 = 41.66666% correction factor.
170hp - 29.41176% = 120hp, conversely 120hp + 41.66666% = 170hp

These formula's only work if you have a stock dyno to compare to ... without it, you have no way of knowing your starting point, thus no way of knowing your true Driveline Loss or correction factor.
So, follow these simple forumlas with given dyno data to determine your Driveline Loss. Once this is figured, you will be able to more accurately guestimate what type of hp/tq numbers you are generating at the flywheel.

Everyone will have variations due to dyno fluctuations and also minutely different Driveline componenets. The key is to dyno the car before doing ANY modifications. In fact, I would say that your first modification should be to spend $75 and have 3 dyno runs pulled on your car.

Also, the only TRUE way to determine driveline loss is to toss out the factory ratings, pull the engine and test it on an engine dyno. Considering that this is EXTREMELY cost prohibitive, we must rely on the factory supplied data ... if it is off, so to is your driveline loss.

Hope this sheds some light on the matter

 

Those are good numbers! The 6spd with stillen intake got 227ft/lbs torque.

Your HP loss is actually higher than 22% since you have to take into consideration the Intake would be good for at very least 260+HP at the crank. Not the 255 everyone is basing this particular loss on..

 

Thanks! Waiting for Turbo95Max to fix/tune his car before we go to the track.

 

he will kick your ***!

 

If his car runs correctly.

 

you know people have really blasted the Sentra SER Vspec for losing "way too much hp" and it loses 20%
why the heck did SCC have to start that crap?

 

I think your torque curve is a lot flatter though and more useable throughout the rpm band??

 

But don't forget that the Maxima had a Stillen intake and that my Altima is BONE STOCK... Got to pay attention to the little things... People are considering his auto run STOCK, its NOT!!!!

 

Correct Polished2002. I was surprised to see his numbers on the Alty, given that I have the stillen intake. Although, I have not felt a huge diff since the intake. Maybe a little harder pull from 4000 rpm. And a great sound!

On the dyno, I wonder that since the car isn't moving, what effect does that have on the efficiency of the intake (and stock vs. stillen or CAI).

I am looking at taking it to the track next week sometime before the next mod. Maybe if I leave 10 lbs. of press. in the front potenzas, it will actually take off!

 

Anyone have a feel for what I should expect to gain in HP/TQ when I add a ypipe? Keep in mind I have a Stillen Intake.

 

Yes, I realize that, but we all know that an intake causes the car to lose some low end torque and give very little extra HP back. Lets wait for DMBmaxima88 to dyno with and without his frankentake, but I'd guess there's less than 5HP gained at the wheels from an intake.

Nissan does a good job tweaking the car from the factory. Very little power can be added to the Maxima without going FI or making the car violate emissions standards. The biggest (power gain) mod for the car is a Y-pipe which is technically illegal (removal of cats). You can gain a few HP here and there, but very little if you keep the car 100% "legal".

I'm itching to see what Hogan (Yo_its_ok) cooks up for his supercharged 2k2.

Stereodude

 

[QUOTE]Originally posted by Stereodude
I'm itching to see what Hogan (Yo_its_ok) cooks up for his supercharged 2k2. Stereodude [/QUOTE

Me 2!