I had my car run on a dynojet today! It is a brand new top of the line, etc...

I had them tune the boost controller as well, which is why they did 13 runs. Most of the other ones don't have any settings. Analog 1 is the boost level.

Here is the sheet:



I'm a little disappointed with the tune. I am 100% sure there are no boost leaks, no codes, etc. It stayed way too rich under throttle. I recently cleaned the filter and the MAF as well.

Tune is the Ash-Spec Class-C tune (91 octane).

what all mods do you have again?

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I have Lived and Learned to LOVE... MY Z

zazupilot: you are luminar - slayer of Z's
1991zed: "i have a dual hks exhaust that gives me a good 30hp"
Ballistic: "A lime green Lambo with black wheels: The car of choice for the efeminate guy with the tramp stamp who wants to be a bada$$. Just say no to pillowbiting."
Ballistic: "Be sure to tell someone at your job that he's an idiot. Then stay away. Idiots self-destruct at any given moment."
YOU + ARE = YOU'RE. THEY + ARE = THEY'RE YOU ILLITERATE BASTARDS

Umm...

-Pop Charger
-Specialty Z everything behind the turbos(2.5" pipes)
-GT 2560R center housings in the stock housings
-Fidenza Flywheel
-555cc injectors
-Z1 Intercoolers

I think that is everything....

Anyway, if you look at the A/F, it basically took a dive to 10:1 and stayed there as soon as it hit 4 grand.

yeah i noticed that. when i first got my NA ecu i spoke with ash for a long time about his chips, he said he usually tuned them more rich then everyone else just not THAT rich.

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I have Lived and Learned to LOVE... MY Z

zazupilot: you are luminar - slayer of Z's
1991zed: "i have a dual hks exhaust that gives me a good 30hp"
Ballistic: "A lime green Lambo with black wheels: The car of choice for the efeminate guy with the tramp stamp who wants to be a bada$$. Just say no to pillowbiting."
Ballistic: "Be sure to tell someone at your job that he's an idiot. Then stay away. Idiots self-destruct at any given moment."
YOU + ARE = YOU'RE. THEY + ARE = THEY'RE YOU ILLITERATE BASTARDS

Whats causing the dip in torque at 3800 rpm?

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I taught I taw a putty tat

Ballistic, Ruler of Interstates
Baller Status: God of Roads
Stage XX+ 1993 Z32 NA Wideboy Edition
"SoulTaker"

[www.roadgodz.com]

B- It looks just like a flat spot. I think it might be where I wait for the turbos to spool. There is a bit of lag I think with these, which surprises me a bit.

Someone on TT.net suggested that I might have the tune for 555cc injectors, but really have 615cc injectors. I had talked to Coz when I bought them, and he assured me they were normal 555ccs, but I guess he could be mistaken.

Anyone know a good way to tell?

Have them flow tested. It's the only way to know for sure.

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*-- Just some stuffy advice from a crabby old fart who's too set in his ways. --*

Well thats just a pain....

You're running into the common problem of "off the shelf" tunes being unsatisfying. In reality no one can do a fully effective tune by remote mail order. Each engine behaves a little different with the same components installed. In most cases the standard stage tunes simply allow you to run safely. They are not optimized for your engine and will not produce the best power curve. The only way to get peek performance is to have a customized tune. Then, if you have subtle issues with the system, changes can be made to compensate.

It goes back to what I’ve always said… An engine is more then the sum of its parts. It’s a system of components that must work in harmony.

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*-- Just some stuffy advice from a crabby old fart who's too set in his ways. --*

I agree, I just wasn't looking forward to spending the cash on an AEM just yet. I did find out from Woody that there is a color difference between the 615cc and 555cc injectors. Apparently, I have the yellow ones with the new style clip, which is indicative of 615cc injectors.

I know that the 'off the shelf' tunes aren't going to be perfect, but I figured it would at least be acceptable.

On the bright side, this explains why I cannot keep my bumper clean, and why I keep coking my O2 sensors!

Vipec

Well, if I'm going with a stand-alone, I'm going with an AEM, as my mechanic is one of the premiere AEM pros, so it makes it an easy choice. I'll ask him what he thinks about it, but since the AEM is about the same price, and is proven over and over.

For now, I'm going to just acquire the correct 615cc tune, and realize that it will be an acceptable 'street' tune.

Why not get it dyno-tuned?
Mine ash eprom runs rich as well, and once i get my new clutch and a few other things on, i would like to get it dyno tuned.
Thats cheaper than a stand alone.

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"Kandy has skill and vision"--Ballistic

2Jay-Z

Chances are, if your parents didn't have kids, you most likely won't either.

I had some injectors flow tested by WhitchHunter recently. Great turn-around time. They're up there in your neck of the woods as a matter of fact. FYI.

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If I had a Z, it'd be silver... no... BLACK...

1991 Black 300ZXTT 2+2

COASTAL Z CLUB

When you get it 'dyno tuned', you need some sort of device to 'tune' it with. Either Nis-tune or a standalone of some sort.

I knew Ash's stuff runs a little rich, but this was ridiculously rich, because it is the wrong tune.

Im quite sure I'll be happy with a correct 615cc tune.

Could someone school me on what I'm seeing here please? Is the bottom graph the stoichiometric ratio and your pounds of boost? If so, it looks like you're running at or just a touch over 15psi and 370hp at the wheels at 15psi seems about right... doesn't it? What am I missing?

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JT240Z: if you don't even bother to take the time to make your request legible then why should anyone take the time to answer it. It's kind of a forum courtesy rule thing.
Z-addict: WTF is a whooptie?
Luminar: "hey it cost me over 60$ at a fancy resteraunt to make this, you're really getting a good deal here"
Z-CARR: What part of that NA rear suspension did you think was designed for rear steering?
Zazupilot: FYI kids: YOUR Z IS NOT AN INVESTMENT. IT IS A PRETTY MACHINE THAT EATS MONEY.

On the bottom graph, the 'lower' lines are Air-Fuel, and the upper lines are boost. I was running about 17 PSI at the time.

The problem was, that because of the incorrect tune, it was sending way too much fuel, causing it to go way too rich. With my upgrades at 17 PSI, I should be most likely 20 hp or so higher, close to 400 even or so I think.

When I had your mods I was 405whp at 17PSI.

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93 TT- N/A to TT, Auto to 5 speed, upgrade central. Stage ...Fast!

I figure with cooler temps (ran @ 90 degree outside temps), and a decent tune, I'd get close to that.

Ah, ok. I was looking only at the numbers on the left. I thought they represented the scale for both indicators. Now I see the 0-25 on the right side.

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JT240Z: if you don't even bother to take the time to make your request legible then why should anyone take the time to answer it. It's kind of a forum courtesy rule thing.
Z-addict: WTF is a whooptie?
Luminar: "hey it cost me over 60$ at a fancy resteraunt to make this, you're really getting a good deal here"
Z-CARR: What part of that NA rear suspension did you think was designed for rear steering?
Zazupilot: FYI kids: YOUR Z IS NOT AN INVESTMENT. IT IS A PRETTY MACHINE THAT EATS MONEY.