Hey everyone,

Ran my 2K1 on the local dyno on saturday. I have an auto so we ran in 2nd gear. Approx 60.5 degree intake temp (dyno temp) 28.9Mb pressure, fan and hood open.

I posted 174.2 HP and 174.2 Ft/Lbs. torqe. About what I expected for pretty much stock, I have a K&N drop in as well as the arospeed ground wire kit installed. I asked how others have run with intakes and he said one other max was in last week with an injen and lost 5 hp, and 10 ft pounds torque. He said he went back to the stock airbox. So I am re-thinking intakes, and may just modify the existing. I was thinking K&N universal cone with a 90 degree elbow into the very front of the intake, where the temp sensor is. I had read an article that the resonator box is designed to give the engine pulsations as it runs so as to actually force air into it, without starving it for air, as in a long 3" tube.
At any rate the other thing he told me was he dyno'd 2 350z's both ran 211HP! one was auto, one was stick. He said he was not too impressed with it. Anybody encounter one on the road yet? I have only seen the silver ones and they are always going the opposite direction.

Next spring I will go for another run, I should have my warpspeed y-pipe and resonator fix in by then, maybe underdrive, and intake. I would really like to get to 200.1 HP!

Have a good one!

 

You're an auto tranny right? That's over 20% power loss to the wheels...not good for a 5-speed.

 

Automatic transmissions generally lose 16-19% and Manual transmissions may lose between 11-15%. Either way, you lose a little power from drivline components. An auto might lose more, but I can enjoy daily driving rather then attempt driving and doing anything else.

 

That is correct- But that is what I have heard, 20% is about average. That was also in 2nd gear and I think the dyno calculated a 86.6 gear ratio. I think people have said 3rd is preferable, because it is closer to 1:1 is that right? Should I get mor hp in 3rd?
Oh by the way 91 octane too.

 

Actually, I think 20% is good for an auto...a lot of the dyno's that have been posted here would suggest closer to 25% loss in the auto. Nissan's auto isn't exactly on the top of the list. I'd say you're doing well.

 

As far as intakes are concerned I think they are not worth the money. asu174 has and intake and other mods and he is not happy that my stock (panel filter) car is quicker. Both Cali/Spec 2000 5spds, he has an Intake, UDP, R/T Cat, Y-Pipe, and 2 1/2" back exhaust and I am quicker than he is (off the bottle that is, he owns me when he hits the laughing gas!!).

 

i have just a hybrid intake and a ypipe, 2000 Auto, and in 2nd gear i dynoed 190hp and 173ftlbs, in 3rd gear i dynoed 181hp and 180ftlbs. I think autos should be dynoed in 3rd since its closest to 1:1 and from jsut my numbers, 3rd gear dyno seems more accurate than the 2nd gear.

 

Isn't 3rd gear really hard to use if you want to get a complete dyno? Don't you need to go at least over 70mph for it not to downshift into 2nd?

 

How do you get to run in 3rd? Just kind of start out and wait for the shifts? We got the car up to 85MPH on the dnyo, let me tell you standing next to it was pretty awesome. Just hearing my car rev up like that was something you do not get to hear when sitting inside.

Thanks!

 

I'm dynoing my stock 2k2 auto in a few weeks. So is it 2nd or 3rd gear?? I always thought 3rd because it's closer to 1:1 and for 6spd it's 4th. I guess just leave the shifter on 3 and just hit the gas. Wait for it to shift throught first and second, then gun it. Since it's on 3, it won't shift into 4th.

 

at 3200rpms in 3rd gear, when u hammer it, it will no longer downshift, car likes to bog in 3rd rather than downshift to really high in 2nd. If u can, see if u can dyno your own car, and u can modulate the throttle yourself, 3000rpm in 3rd gear is like 65-70mph, but it goes up to around 125-130, and its a LONG dyno in 3rd gear. but jsut from looking at numbers, 3rd gear numbers are far more accurate than 2nd, but thats only from comparing to 5spds, 5spds that run in 3rd whcih is almsot 1:1 dyno torque and hp numbers that are really close to each other. 181/180 with both hp and tq being about 4 away from most other autos seemed more believeable than 190/174 with torque being almost 6-8 lower than everyone elses and hp being 5-7 higher tahn everyone elses.

 

2nd gear will give u nicer hp numbers, but 3rd would give u more accurate numbers. My friend dynoed his 2k2 in 2nd, and got 200/213 first run, 205/207 second run, and 209/199 on third run. All runs were done in 2nd gear. He jsut had franken intake and a Cattman catback. Considering that 6spd 2k2 dyno around 205hp 225tq stock, if he had dynoed in 3rd, if it followed teh same trend as my car, he would probably have put down on his best run, 200-205hp and around 215-220tq, but the dynos were similar for all of us, we all began putting less torque as we made more runs, but hp kept going up.

 

yeah you'll always get the best results in the gear closest to 1.00:1. For automagic's that's 3rd (1.00:1 exactly I think), and for 5spd guys it's 4th (0.95:1).