And here are the results. With just a popcharger, my car only netted 234.8hp and 224tq. Are these numbers close to where I should be? I think my intake might be hurting instead of helping, cuz a stock Z ran after me making 239whp. Any help or input would be nice.

 

Can you scan and post the chart? Thanks.

 

Sounds about right.

 

yeah those numbers are pretty average, the 239whp completley stock is really good though.

 

Does elevation come into play here? I mean, I would think so at least, whats your elevation? I am in Sacramento, CA, and we are like 150 ft above sea level, so I think I should be somewhere near 240 to the wheels, right? No other gas has gone in my car other then Chevron, I use Mobil 1 and switch it out every 3-3.5 K miles (expensive but it gives me peave of mind) and since i have had my car since it was off the truck, I think it should be performing at its best since I dont abuse it, not to say I dont like to show off some times, LOL.

Today my little spurt came and when I was leaving a parking lot getting into traffic, I spun first gear with the tail wagging, and did a NICE second gear burnout for about 2 secs, I love the way the PopChger screams....

 

shoulda dynod it completely stock. the popcharger lost 5hp on my z.

 

to tell you the truth, the reason the stock Z dynoed more than you is a chance that he drives harder than you. the Z computer will advance timing and fuel delivery based on your driving habits. i open my z up 3+ times a day. when i dynoed, the Z before me put down 249hp with borla, ecu, and popcharger. i was completely stock and put down 245. now i have pro1 and popcharger and this thing sounds mean as hell. i think i may of gained 10hp or less, who knows. but that sounds about right for someone who doesnt rag the Z.

 

Elevation, heat soak in the motor, gas grade, rim size and weight (dynojet), SAE correction method, and each car even will make a difference. There is no science behind dyno-testing.

 

funny u mention that, he road races his ALOT......so that could be part of it

 

Why is that? What parameters in the ECU determine whether one drives hard or not? Is there any documented proof on this, or are you speculating?

 

from what i have HEARD (so you can base everything off of that), the ECU has 3 fuel maps. when you are in an aggresive driving mood, the ECU will select the 3rd fuel map which is purposefully made to be more aggresive with fuel delivery and timing. now, how often you are in this mode and just how aggresive you drive it will determine just how aggresive the ecu takes all the parameters. now, when i dynoed 4hp lower than the guy with full exhaust, i figured it's b/c of my driving habits. i rag this car pretty often so i imagine my fuel maps are pretty out there.

 

If its anything like the OBDII setup in my Prelude, you have open-loop and closed-loop.
Open-loop is commonly associated with WOT and represents the fuel map when you are above 35% throttle. Closed-loop is a pre-determined fuel-map for when your just cruising along.

I don't know too much about how the ECU functions on the Z, so I guess its possible it has three different sets of fuel maps. But that would be the first I've heard if it. :shrug:

 

im kinda curiouse how much does rim size and wieght effect a dyno pull on a dynojet?

 

I dynoed my stock Z with only a popcharger on saturday....it was very humid.

I put down 235HP and 209TQ on a Mustang Dyno....My TQ is what concerned me....seemed low

It is time for an oil change and my tires are near bald, would that have anything to do with it?

 

What Acree is saying is completely false. Alot of things affect whether the ecu pulls or advances timing but not driving habits. Heat, gas grade, leanness in a/f ration +others. Whether you drive the car hard or not has nothing to do with it. Its straight myth.
Also the Z only pulls timing, the stock ecu can only be adjusted up 2 degrees of timing without a reflash. I know i drive my z like i stole it and just had revup test a new dataloger/ecu adjuster on my car. Cars timing was the same as stock and my car does have mods also.

 

i dont know if thats completly myth, i cant remember where i read it, but it went along the lines of "the car learns the driver".
I dont know exactly what that means but i think it has something to do with responsivness of the engine.

 

hah, gatti-man if im completely false where's your proof? noob.

j/k man. i'm sorry but i think you don't know much about the car. i KNOW that compared to the other Z's i have raced with light mods to stock, i can tell you that the way i drive my car makes the ecu do something man! i can shift pretty well but i don't think that would give me a consistent 2 car lead on a stock Z from a dig. i've also raced a brand new 35th aniv model. cool guy, but from a dig i pulled the guy by a full car at 100. i still have the crappy potenzas. the ecu might adjust for alot of the things you listed, but i am a strong believer that this car modifies the engine parameters somewhat if not heavily based on driver input.

 

dyno my z... look below.

 

Thanks for posting the chart. The numbers are in line with a 350Z stock.

 

Acree, if its a stock MT vs a stock AT the MT will win if the driver knows how to shift. Powerloss through the AT has been heavier from what ive seen. I dont know how you always win against stock Z's that isnt the question or point. There are alot of variables that can affect that. The point is that while i dont have postable proof on the internet i verified this with my own car with several other members there such as tortuga, doodz (was there but didnt see), and harvesterUT.
For those that have heard the ECU learns the driver that is for AT drivers. It alters shift points to coincide with your driving.
OK Acree look at it this way. The ecu would pull power to save gas bc the person doesnty drive as hard right? Well then there would need to be different A/F maps for that and someway to reduce airflow to prevent a lean conditon (which their arent), all pulling timing does is lower the efficiency of your engine. It decreases mpg and power output at the same time so why would nissan design a car to give slower drivers LESS mpg? Another way of accomplishing this would be some kind of engine tech like the VTEC which again the Z doesnt have. Get in touch with technosquare and ask them or anyone else that does ecu work they will tell you the only time the ECU pulls timing is for knocking, thats it.

Also i know alot more about cars than you think acree. I do my homework before posting random thoughts and feelings about your car vs other cars etc.