Editing Forums/Z31P/z31-performance-upgrade-forums engine-management/Professional Tuning.

{{ForumImport
|op_user=NissanXRMA
|op_date=2011-06-27 23:58:54
|post_count=20
|archive_url=/Z31performance_archive/forum/z31-performance-upgrade-forums/engine-management/14822-professional-tuning.html
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'''NissanXRMA:''' <small>(2011-06-27 23:58:54)</small>

So I have my Z running and its been driving well. I have Nistune controlling 420cc injectors. My mod list is below. I hope to be running about 15-20psi.

So i have a base tune so far with 376 K constant and 76 as the latency. The car runs well and boosts safe. I think there's a lean spot since it does pull sometimes more than others.

I plan on getting it tunes at [http://enhancedstreetperformance.com/ http://enhancedstreetperformance.com/] in my hometown. IT would be tuned by there nissan tech guy. It's 175 an hour and the guy there said it could take 2-3 hours. My bothers 240 was tuned in a hour. I'm wonder how worth it is getting tuned professionally and how much it can help power-wise from say a "homemade" tune. Since it could potentially cost me 350-400 dollars.

3" MSA catback

3" downpipe

Satan turbo relocation pipe

Cat delete

Airesearch T04b

Manual boost controller

Front mounted intercooler 2.5" piping

Nistune

420cc MB injectors

Stock MAF

Cone intake

Apex'i Twin chamber BOV

38mm Wastegate

South Bend Stage 2

Walbro 255lph

E-fan conversion

Egr block-off

14point7 Wideband controller.

6 heat range NGK coppers gapped from .44 to .29

93 octane

Accel 8.8 spark plug wires

Deleted all emissions and idle/cold idle controllers

Professional products Adjustable FPR set to 37 Base with a 1:1 reference.

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'''aehs01:''' <small>(2011-06-28 00:08:37)</small>

I think you should, but only based on the fact that when I do get Nistune i'll be needing to take my car to a shop somewhere in MA and right now I don't know of any places that know it. I don't want to waste money while someone 'learns'. I don't know enough of the benefits to a professional tune vs. what you have done already so I can't give an opinion on that. Although I am guessing they will be able to get you more power out of your current setup after an hour or two.

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'''Careless:''' <small>(2011-06-28 01:47:33)</small>

how is the pro products FPR treating you? I think we have the same on.

Mine tends to leak where the fittings go in, but I may just have them a tad too loose?

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'''NissanXRMA:''' <small>(2011-06-28 02:10:34)</small>

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Yes i had a lot of trouble with it leaking through the threads. Finally found a gas resistant sealant. Some special order loctite.

Anyways. Back to the thread…

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'''88sinZ:''' <small>(2011-06-28 02:12:21)</small>

'''Find out if its a load bearing dyno or a inertia dyno, ideally a load bearing can be more useful for tuning

you should expect most experienced tuners for Nissan will be from a 240sx background, it would be good to ask about NisTune experience'''

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'''Chrisw_2003:''' <small>(2011-06-28 02:14:55)</small>

Has the guy used nistune before? If not see if he can cut you a deal on the price since he is going to be learning how to use the software.

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'''SATAN:''' <small>(2011-06-28 04:37:38)</small>

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FIXED.

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'''NissanXRMA:''' <small>(2011-06-28 11:24:14)</small>

There website praises their load-bearing dyno.

But I'm asking the effect on the car. What can be unleashed vs a homemade tune.

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'''300zxturboftw:''' <small>(2011-06-28 12:40:02)</small>

Depending on how good your current tune is you can "unleash" a lot of HP especially on the dyno where you can effectively set timing and boost to where it's efficient.

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'''NIVO:''' <small>(2011-06-28 13:22:03)</small>

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'''

I know the guys there and the guys there know me, who exactly is their Nissan guy who is tuning?

is the Apex'i TCBOV vented directly to atmosphere, that can cause a stall/lag effect in between gears when still using the MAF.

also only people I know that does Nistune and first hand experience with it:

RDZ Motorsports'''

12 South Street

Danbury, CT 06810

Contact Rich on Tel. 203-628-7725

rich@rdz300.com

[http://www.RDZ300.com www.RDZ300.com]

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'''NIVO:''' <small>(2011-06-28 13:29:42)</small>

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They have an AWD mustang Dyno (the brand). It is a load dyno and you need to know the actual weight of your car with you in it to give you the correct numbers. You need to weigh it at the scale with you in it. Worcester has a public scale on Southbridge street.

a homemade tune you can't see the torque gains from adding or removing timing which translates to more power. on that dyno you can do steady state tuning which you cant do on the road.

For BMW's, Porsche, Audi, MB and other cars a tune starts at $900 + the dyno session. $400 is very reasonable.

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'''NissanXRMA:''' <small>(2011-06-28 14:28:32)</small>

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[quote=NIVO]

Not sure who their guy is.

I run a blow through with the MAF/BOV

Danbury if quite far though. :-?

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'''DMANN:''' <small>(2011-06-28 20:43:45)</small>

I'm not sure what the difference is between your own tune and paying someone to tune it???

I thought that Nistune had map trace for the purpose of tuning?

You could do a couple of tunes your self get a average, and take it to a dyno and see and make adjustments from there.

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'''michaelp:''' <small>(2011-06-28 21:01:35)</small>

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If you pay someone else to tune it and they fuck it up its on them :nanan?re

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'''300zxturboftw:''' <small>(2011-06-28 22:12:44)</small>

[quote]'''michaelp wrote:''' 

{{Quote|user=DMANN|I'm not sure what the difference is between your own tune and paying someone to tune it???

I thought that Nistune had map trace for the purpose of tuning?

You could do a couple of tunes your self get a average, and take it to a dyno and see and make adjustments from there.

If you pay someone else to tune it and they *beep* it up its on them :nanan?re}}

There's not one tuner I know that will go, oh my bad, let me rebuild your engine for you now that I screwed it up. They will go, oh dude…yeah…you're wastegate was stuck shut. Good luck next time bro. That's why you do your research on tuners first lol.

And you pay someone to tune it on a dyno for the reasons all above. Mostly because you can tune into max power without blowing it up better than on the street with a butt dyno. Keep upping the boost or timing and see what happens on the street versus seeing power to start decreasing on the dyno telling you when to stop.

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'''NissanXRMA:''' <small>(2011-06-30 16:05:37)</small>

I didn't feel like starting a new thread, but the car has been acting fussy.

The idle is smooth, but idles with AFR's in the 11's and 12's.

Pulls good in boost. Probably could pull harder.

Cruising is also in the 12's and 11's.

Decel is fine.

K value is 360 and latency is around 70.

Just way to rich anywhere but in boost where it's fine and rich.

I decreased the K value to 300 and it still ran rich cruising and idle, but lesser so in boost.

Any ideas to why its cruising rich?

I can email the tune to anyone who wants to look at it.

Thanks in advance.

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'''roastin300:''' <small>(2011-07-01 03:10:27)</small>

Spend some time with it. Nistune is relatively easy with some reading and tinkering. After a few hours of reading and within an hour of it installed driving the car around and tuning, I was hitting 18psi :nanan?re

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'''NissanXRMA:''' <small>(2011-07-01 03:25:05)</small>

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Believe me i've beeen spending a lot of time with it.

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'''300zxturboftw:''' <small>(2011-07-01 04:15:06)</small>

Unfortunately it doesn't always work the way you want it to. Requires some patience for sure.

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'''glitch:''' <small>(2011-07-12 04:47:34)</small>

I have had some personal experience with street tuning a stand-alone ecu and then taking it for a proper dyno tune on a Dyno Dynamics inertia based dyno. It wasn't Nistune, but rather a highly modified Volvo road race car (still street legal, barely) and an SDS EFI set up using an Innovate LM-1 for logging, but the process is the essentially same. We felt that we had a pretty decent street tune, though I will say that finding a "safe" place to do a hard 4th gear run on the street at 25psi was not easy, and not that safe either! We made an additional 70rwhp with our dyno tune, most of which came from cam and ignition timing changes and a bit of work on the fuel. I was shocked that our awesome street tune had left that much horsepower on the table. Dyno tuning is the most accurate way to get a safe and reliable tune with the most torque and horsepower, period.