I dyno my Z using DYNOJET.. I did two runs and my best number is 246.42hp 242.38torque. SAE correct.
my A/F ratio was about 14 at 4500rpm and 13.5 at 5500rpm went down to 12.8 at 6000rpm. Is this safe?? am i running rich ??
My mods are Pop charger+test pipe+Greddy Evo2 exhaust. Im kind dissapoint at number.. I was expecting over 250hp.. cause stock Z dyno about 240hp. I will post dyno sheet later.

 

The ECU is programmed to get richer in the upper RPMs. Yours sounds normal. You can lean it up a bit by getting an ECU reflash.

 

and your in CANADA, the weather must be nice!

 

didn't you blow your engine?

 

Hey Z boy what front lip is that on your car?

 

cheapy nismo replica, but abs, which is what all front lips should be made of, imo.

 

no..

 

didn' happen to get a run before the mods did you?

 

NO im thinking to flash my ECU or get S-AFC II install and turned

 

sorry bro, i had you confused with someone else.

 

You didn't baseline?!
So how do you know your car is any stronger at all?

 

If he gets it flashed, it will be stronger... he can use the current setup as a baseline now.

 

here is my Dyno graph.. A/F ratio seems safe to me.. I dont care about my Hp, I just want to makesure my Z isn't running rich or lean..

 

Dyno's are incredibly reliable measurements of performance.

/e-sarcasm off

 

I heard before there are different types of dynos, HP can vary alot between them.

 

Nice numbers, check out this guys.
https://my350z.com/forum/showthread....53#post1526753

 

some one please tell me my A/F ration seems safe ?? Do i really need reflash my ECU??

 

Your A:F ratios seem "okay" to me although at WOT closer to 13 would be nice. The ECU is set for emissions remember, not power. Forget about the bobble at 2500 rpm, that's an anomaly of the DYNOJET dyno at the start of about every run.

But I don't place a lot of faith in the typical DYNOJET A:F sensor. Stuck in the tailpipe it can give poor readings. Far better to put it in a bung welded into the system closer to the exhaust ports....like an oxygen sensor port for instance. But the typical dyno jockey only wants to get it done quickly and knows that most customers only want horsepower "dyno bragging rights" anyway.