Finally I got my car tune today.Very happy with it .I end up with 285 hp and 236 of Torque. The dyno before tuning was 274 hp and 226 of torque, here is the graph of the last run.He did tune a 370 few months back and the car end up 311.He don't know what kind of exhaust or HFC ,but he noticed the GEN 3 stillen intake. He says that on a shift stick he can start the pull earlier on the rpm, and that help to get few extra horse power over an automatic like mine.Plus the gen 3 stillen would give a few more hp.The difference before and after on the 370 was 10 hp just like mine.He put the graph of the 370 next to mine and the pull on the 370 start about 2000 when on mine start at around 2900.And my mods are ark exhaust,Fastintention resonated HFC and Takeda intake.

 

Holly run-on sentence!

Where's your baseline curve?

 

I know I did it from my phone hard to type ,before the tune it was 273.If you are asking for a stock dyno, no I dont have a base line.

 

What you need to realize is the peak numbers are usually useless unless you run the motor at the top end most of the time.

What *IS* of interest however is the change throughout the rpm range between baseline and after mods.

Here's one from my bike from a few years ago. Changes included removal of secondary throttle plates and a tune. Aftermarket exhaust was already installed before I rode the 200 miles to get to the tuning shop..



As you can tell, the biggest increase was from the removal of the secondary plates, with HUGE torque gains down low (bike had variable valve timing on the intake cam), and a relatively consistent HP increase throughout the range. Not bad for a little 1.35L NA engine .

 

True Jsolo I am going to try to get the before tuning graph. By the graph you can see how smooth the power band is and higher all the way compare to the before tuning and in some places the difference is more than only 10 horse power.

 

Those are pretty good numbers considering the mods. Although the torque seems low. My car pushes 246.4 with just an exhaust and tune. But I was tuned by a pro-tuner.

For a 370Z to be doing 311 WHP, he'd need to be fully bolted-on with headers and everything.

 

I was thinking the same thing about the torque.It seem a little low.Yep that is 25 Hp more and that is a lot. I just repeat what he says.How many horses did you get Soliditude? I can tell that the car at low rpm do not feel like it felt before the exhaust.It feel week like missing some torque.So when you mention a pro tuner is some one with more experience and if I get my car with a pro tuner I may be able to get more torque?

 

I think I just got a lucky engine with my car to be able to put down that much torque and power with just an exhaust + tune. I'm not sure how the entire process of tuning works or what you need to know to tune cars better, but the guy who tuned my car tunes twin-turbo racecars for Formula Drift competitors and personally knows the people who developed UpRev. So he was really good, with lots of experience. You lose low RPM torque with intakes as well, I've heard, so in combination with your HFCs and exhaust, that's why you're feeling it to be less powerful there.

But for any VQ to be puttin' down 300 WHP +, it needs to be fully-bolted.

 

before the tune I was thinking on puting the stock intake back with K&N filter and silicone hoses. I may still doing that,but I dont know if I would need tune it again maybe not i hope .

 

Not to bring an old thread back to life but I was recently tuned with Ecutek and made 311awhp

2014 G37x coupe (Q60)
ARK CBE
FI resonated TP
Stillen Gen3