S-Mode button importance
 

Hello,

I put my 370z 2009 on a DYNO today and I am quite disappointed what it showed up, as per tech. specs. power on engine is 243kW, but the diagram showed that I have only 224kW on engine and 193kW on wheels!? The guy asked is the s-mode button changes anything in engine, because when he is taking measurements he can't go at full power/torque as at one moment S-Mode switches off and on the dash panel blinking ABS light, it's because front wheels is not running at all as they are on the ground? Does anyone has ever something like that? Or there is something wrong with my Engine or anything else? As per information over the forums I found that these cars should have on stock on wheels around 290-305 hp while I have only 258 hp on wheels...

My stock 370 dynoed at 266whp on Mustang Dyno. Other Dyno might show slightly higher, but your results aren't too far

a tad on the low end but i think you're reading that incorrectly in regards to the 290-305 stock. you're looking at around 15-20% drop from the 332 crank hp.

260-280 is the range majority of people get without any mods.

intakes, exhaust, tune people will run on average 300-320.

then there are a lot of different factors as to why it may be higher or lower.

Okay so far 332 is not on Engine but on Crank? Looks like I missed that out somehow, looks like then is nothing to worry about, but then acceleration from 0-60 in 4.6 sec. per specs also is just with naked Crank on four wheels!?

By the way I have installed Stillen GEN3 intake and Stillen exhaust and there isn't any HP gain as per DYNO tests, or I need to buy Haltech and then reprogram to get out any additional HP from these stillen mods?

Sport mode just blips the throttle for you on down shifts. I don't think it changes anything in the ecu in regards to hp. Did you have these modifications on when you wrote your first post or were you stock? If you had them on than I think that dyno needs to be recalibrated. You should be reading higher with those mods.

Yes I made tests with those mods installed. Looks like need to try on another/different dyno

i'm assuming it was done, but did you disconnect the battery, let it sit for a few moments and reconnect?

check the intake filters are in good condition/unclogged, did your MAF get damaged during installation?

still weird... test it out on another dyno and report back.

oh.. are you using regular fuel? :shakes head:

the 332 HP listed is on the crank, not the wheels.

if you really want to figure out your 0-60 times, from a complete stop, FLOOR THAT BIATCH, and time.

also, the only thing that the S-button does is turn on/off the synchro rev-match. it doesn't magically add more power to your car, though it may yield to better times on the track if you don't know how to downshift properly.

Mine did 275/243 in 5th(1:1 ratio)with an A/7 trans.
this was on a Dyno-Jet...only mod is drop in k&N's (hardly noticed any gains)
readings would have been a bit higher;if speed limiter didn't kick in @close to 7k.
Did you have a Dyno Tune after the install of parts?
Idk anything about a mail in tune-except that i heard that it was intended to get to a nearby Tune shop without damaging anything.
You shoud be near 300whp (+ or -) just a bit/with those upgrades.

0-100 about 12sec.https://vimeo.com/141242556


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You mean disconnect battery prior test?

Intake filters was installed one week ago, they are new and clean, and MAF isn't damaged. Yes will check for another DYNO, so far it won't be so easy as need to go neighborhood country but anyway will do as I am planning to replace Headers, camshafts, clutch and then reprogram with Haltech. Will do.

No I am using 98 Octane.

No I didn't have any tune, but guys in the service where I installed mods told me, that there shouldn't be anything without proper tune after installments, anyway I ordered Haltech ECU and will do programming will see what will be outcome.

nono when you installed the breathers initially

Traction control off I hope?

Tracy Ramsey

I was under the impression Haltech didn't have an ECU that would work with the Z34?

They dont have an application specific version but you can use a universal version piggyback'd with the stock ECU. Its definitely a bit out of place in a bolt-on 370z but to each their own.

He's in Latvia. I'm guessing you use what the local tuners have access to / experience with. Personally, I'd get an eTune with Uprev or Ecutek, but that's me.

You mean traction control must be switched off when testing on dyno?

The problem is here in Latvia is really problematic find anything for such cars... I even can't program 370z here because nobody knows how to do it, I need to go to Estonia or Lithuania, there are one place in each country who knows how, I hope they knows well :icon17:

I am not sure what guys did in the service, but I hope so they did, but what if they don't?

He's asking how long ago did you install you mods? the ECU needs time to adapt to the changes, OR you can RESET the ECU by disconnecting the batter over night.

Yes Traction control "HAS" to be off when your on the dyno, or the ECU could pull power, You mods no tune you should be around 290 WHP and must be a a gear that is 1:1. I know on mine 7SPD auto we always use 4th, 5th would be a LONG pull and would exceed 140 MPH not to keen on having the car roll that fast on the dyno :/.

Absolutely!!!

Tracy Ramsey

You dont really have a choice about traction control. It will not even let the car begin to drive on the dyno if its engaged, and if you dont turn it off, it will fault and shut down by itself after a moment anyway