Why I THINK a tune isn't necessary 321WHP

DEpointfive0 · 01-10-2013, 10:19 PM

Hey guys,

This has been BEATEN to death, yes I know...

Dynojet, highest was 321HP, followed by 319.8, and 318.4...
Tq was 266-268
WITH a CEL (TP related)

Mods:
Stillen G3
Megan Resonated TP's
Stillen CBE

NO TUNE
Mods have been on for thousands of miles though

While these aren't THE highest numbers ever... They're up there, I think people are hell bent on thinking a tune WILL give better numbers...
While I still believe that if you let your car make the adjustments, you'll do just fine
Maybe with the VVEL unlocked you'll gain more... But it is worth it?

Dyno sheet below

Oh and on a 7AT

Trips · 01-10-2013, 10:32 PM

You are not alone.

http://www.the370z.com/tuning/55417-...-thread-2.html

Liquid_G · 01-10-2013, 10:34 PM

do you have a baseline to compare against on the same dyno? number don't really mean anything by themselves.

fxroar · 01-10-2013, 10:37 PM

The tune is not just for the highest WHP/WTRQ gained but rather improving the variables under the curve. Also fan control/idle rpm/top speed limiter etc etc. There are other reasons for uprev/tune. The driveability also improved. In the end its your choice.

Tribalpinoy91 · 01-10-2013, 10:37 PM

Those are pretty nice numbers for those three modifications.

DEpointfive0 · 01-11-2013, 12:27 AM

Quote:

Originally Posted by Liquid_G

do you have a baseline to compare against on the same dyno? number don't really mean anything by themselves.

Nope, sorry... I never, ever intended to dyno my car...
I think the guy has a dyno sheet from a stock 370 though

DEpointfive0 · 01-11-2013, 12:32 AM

Quote:

Originally Posted by fxroar

The tune is not just for the highest WHP/WTRQ gained but rather improving the variables under the curve. Also fan control/idle rpm/top speed limiter etc etc. There are other reasons for uprev/tune. The driveability also improved. In the end its your choice.

I do agree with those,
Playing with fan control and tunes for valets are nice...

But a LOT (dare I say) the majority of people believe a tune is necessary to squeeze the max HP out of the car

My car did also hit the limiter too, lol

So I guess a tune can lift that too (not sure how often you go over 155 though)

chrischhorn · 01-11-2013, 03:49 AM

Quote:

Originally Posted by DEpointfive0

My car did also hit the limiter too, lol

So I guess a tune can lift that too (not sure how often you go over 155 though)

Everyday of my life.....Which i live a quarter mile at a time.....

DEpointfive0 · 01-11-2013, 04:21 AM

This is a before and after of my custom intake manifold, hence the lower numbers:

JMac88 · 01-11-2013, 06:36 AM

Afr?

redline727 · 01-11-2013, 07:18 AM

Quote:

Originally Posted by DEpointfive0

Hey guys,

This has been BEATEN to death, yes I know...

Dynojet, highest was 321HP, followed by 319.8, and 318.4...
Tq was 266-268
WITH a CEL (TP related)

Mods:
Stillen G3
Megan Resonated TP's
Stillen CBE

NO TUNE
Mods have been on for thousands of miles though

While these aren't THE highest numbers ever... They're up there, I think people are hell bent on thinking a tune WILL give better numbers...
While I still believe that if you let your car make the adjustments, you'll do just fine
Maybe with the VVEL unlocked you'll gain more... But it is worth it?

I will post dyno numbers when I get to a computer
Unless someone wants to text me and I can text them the pics
(310)eight nine three-4207

Oh and on a 7AT

So maybe my numbers aren't totally unbelievable alot of people seem to think something was wrong with the Dyno I was on. Plus bc I don't have a stock baseline sheet either i was modded before my tune. My sheet just shows the curve before and after uprev but with mods. Similar to yours, intakes, test pipes and cat-back. Then a custom uprev tune. One day ill go back and re Dyno my car bc now I have HFC bc of state inspection screwed me, thought I could get by with out someone checking bc we don't have emissions where I am but they noticed I didn't have cats and failed me. The shop I go to said a retune wasn't really necessary by putting on the HFC since they were only 200cel it may have made the car a tad richer but nothing I needed to pay for a retune for.

Red__Zed · 01-11-2013, 07:28 AM

Quote:

Originally Posted by JMac88

Afr?

^ this is why you tune

98intrigue · 01-11-2013, 07:55 AM

So many people are stuck up on dyno numbers. Run your car in the 1/4 mile and that is the true measure of horsepower (your trap speed). My car made 440whp on S&Rs dyno and then only 380whp on Z1s dyno before my retune.

Even if you run on 1 dynojet and then drive 10 miles to another shop that has a dynojet...your numbers can still vary.

edub370 · 01-11-2013, 08:05 AM

low end/mid range torque will improve, as well as throttle response. peak hp is not vastly affected by a tune. happy afr's = happy car

red6spd · 01-11-2013, 08:08 AM

Quote:

Originally Posted by JMac88

Afr?

I'm going to explain this a little bit more because I don't think the OP understands the importance of a tune with all those mods. Yea you will creep out a few hp more and have your CEL turned off but the biggest reason is to make all those mods work together with your Z. The Z tends to run on the lean side with all those mods and a tune really cleans it up. A good tuner should be able to show you how messed up your AFR is and how a tune can clean it up.

01-10-2013, 10:19 PM	#1 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	Why I THINK a tune isn't necessary 321WHP Hey guys, This has been BEATEN to death, yes I know... Dynojet, highest was 321HP, followed by 319.8, and 318.4... Tq was 266-268 WITH a CEL (TP related) Mods: Stillen G3 Megan Resonated TP's Stillen CBE NO TUNE Mods have been on for thousands of miles though While these aren't THE highest numbers ever... They're up there, I think people are hell bent on thinking a tune WILL give better numbers... While I still believe that if you let your car make the adjustments, you'll do just fine Maybe with the VVEL unlocked you'll gain more... But it is worth it? Dyno sheet below Oh and on a 7AT show2nite and redline727 like this. Last edited by DEpointfive0; 01-11-2013 at 07:56 AM.

01-10-2013, 10:32 PM	#2 (permalink)
Trips Administrator Join Date: May 2009 Location: Disneyland, Ca Posts: 8,728 Drives: 🔰 Rep Power: 10	You are not alone. http://www.the370z.com/tuning/55417-...-thread-2.html __________________

01-10-2013, 10:34 PM	#3 (permalink)
Liquid_G A True Z Fanatic Join Date: Aug 2009 Location: Chicago Burbs Posts: 1,439 Drives: 09 370z Supercharged Rep Power: 43	do you have a baseline to compare against on the same dyno? number don't really mean anything by themselves. fxroar and Sales@AAMComp like this. __________________

01-10-2013, 10:37 PM	#4 (permalink)
fxroar Track Member Join Date: Oct 2009 Location: San Diego, CA Posts: 525 Drives: '10 40th Anniversary Rep Power: 16	The tune is not just for the highest WHP/WTRQ gained but rather improving the variables under the curve. Also fan control/idle rpm/top speed limiter etc etc. There are other reasons for uprev/tune. The driveability also improved. In the end its your choice. gtkiller, roy'sz, elperuano and 3 others like this. __________________ Fast Intentions / K&N / Blox / Evo-R / Uprev / Forgestar 19" F14 / R40 / NST / Z1 / SDCE / H&R / Kenwood / ISS Forged 20" FM10R

01-11-2013, 04:21 AM	#9 (permalink)
DEpointfive0 Premium Member Bitches Join Date: Jan 2012 Location: SoCal Posts: 14,824 Drives: a lot Rep Power: 17151	This is a before and after of my custom intake manifold, hence the lower numbers: fxroar likes this.

01-10-2013, 10:37 PM	#5 (permalink)
Tribalpinoy91 Track Member Join Date: May 2012 Location: Las Vegas Posts: 607 Drives: 370z PW Rep Power: 13	Those are pretty nice numbers for those three modifications.

01-11-2013, 06:36 AM	#10 (permalink)
JMac88 Enthusiast Member Join Date: Jun 2010 Location: Edmonton AB Posts: 416 Drives: 2010 PW 370z Rep Power: 14	Afr? Spikuh and Mitco39 like this. __________________ Full Mod List

01-11-2013, 07:55 AM	#13 (permalink)
98intrigue A True Z Fanatic Join Date: Jul 2010 Location: Clearwater, FL Age: 38 Posts: 4,855 Drives: 2014 Viper Rep Power: 429	So many people are stuck up on dyno numbers. Run your car in the 1/4 mile and that is the true measure of horsepower (your trap speed). My car made 440whp on S&Rs dyno and then only 380whp on Z1s dyno before my retune. Even if you run on 1 dynojet and then drive 10 miles to another shop that has a dynojet...your numbers can still vary. Streetlife, GaleForce and Compdoc777 like this. __________________ Ryan - 2014 Stryker Green Viper Gone - a few Vipers and a couple turbo VQs

01-11-2013, 08:05 AM	#14 (permalink)
edub370 A True Z Fanatic Join Date: May 2011 Location: KCMO Posts: 3,458 Drives: 09 370z S/T 6MT Rep Power: 19	low end/mid range torque will improve, as well as throttle response. peak hp is not vastly affected by a tune. happy afr's = happy car Sales@AAMComp and 2010ZilverZ like this. __________________ 09 370Z ST 6MT//Injen CAI//Greddy CBE//TP//TSW's//Swifts//Stillen lip//Whiteline sways 326whp/268tq

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