The auction mentions a break-in period for the ECU. My guess is that the mysterious dyno pull done at StrictlyZ with the Fujitsubo was before disconnecting the battery to reset the ECU. Maybe the "newfound knowlege" is to simply reset and wait a week for the ECU to stabilize?

I think it's likely that intake/exhaust mods will require fuel mapping changes to the ECU to get maximum benefit.

Even so, I can't believe anyone would buy something so expensive without proof that it works.
--
Jeff

 

Z461...hmmmmm could be

My thoughts are that the computer has a learing curve. They are thinking that if the computer is reset then the computer will adapt to more flow and produce more HP....We will see. I'm just a pay check to paycheck white boy but if I had alot of cash I might get that kit, it looks cool....I think the wise thing to do is sit back and wait for dyno proof before anyone makes a final decision about the kits out there.

I'm still waiting for K&N drop-in VS JWT popcharger results....The one making the most HP will soon run out of stock I'm sure.

The computer has alot of folks baffled right now...If it didnt there would be a ECU mod already.

geez my car has the dealer techs baffled and now I got a rental car....These high tech cars where everthings digital is scarey. hee hee... I know my car had loss complete electric power twice since the trottle body sensor and peddle sensor went out of synch. (thats what they say but who knows I'm sure i got a bad sensor or something)

 

$3000????? Geez, the exhaust retails for 223,100 yen in Japan. Even with a 10% tariff to import it to the US, it only costs $2,000 (1800~ +tax). Add $150 for shipping, and it's still only $2,150! Looks like someone wants to make a very healthy profit on it! I guess that's the price you have to pay to be one of the first!

 

I'd lose 20 lbs. if someone would give me $3000.

 

And yet that is exactly what they did! VQ, I really think sometimes all you want to do is get your post count up. It gets tiring sometimes. You don't even have a Z.

Also looks like I am not the only one that knows what happened at that dyno pull. I was asked to keep quiet, but when someone then goes on and tries to sell that exhaust I think I have an obligation to tell what I know. There has also never been another dyno and yet their is still a claim of increased power! Hmmm, I did a dyno and posted the charts the same day, what's so damn hard?? Wake up!!!

As far as "ECU learning" by disconnecting the battery, that is a myth. The ECU is adjusting continually. It is learning all the time, so why would unplugging it do anything??

 

I really didn't want to step in but I think I should clarify a few things.

First of all, the 350Z is a new car. What we are seeing is the first batch. We are dealing with a new car, a new ECU, exhaust etc..

All this stuff is NEW! The Aftermarket is doing a great job of working hard to get stuff out fast for this car. Some stuff will work while others will looky shiny and pretty

With this 350Z having a different ECU I was told 2 different things. One is the disconnect battery idea. Which I'm sure works. But I did some digging after the Dyno and bugged some Nissan people.

Here is what I've been told and hope to check out and try. The Nissan ECU does have its own learning curve. So say you change something like a EXHAUST. In order to get a proper reading you need to drive the car at least 25 miles and put the car through all the ranges.

So is that really true? I'm not sure but hopefully I'll be able to try this in October if I get a chance at the Dyno and some products come in

Till then guys please play nice. We're here to have fun so lets keep the harsh comments to a minimum

Love Life, Love People, Love Cars - Mr. Katayama

 

Anyone who spends 3K or more on that exhaust might regret the purchase in the future. There have been no dyno plots to show any gains in hp, but if you absolutely need it, Japanparts.com has it for 2K plus shipping which is definitely worth the wait.....Why spend your money now when you can have an exhaust that provides more power, less weight, lower cost, and better craftsmanship in 6 months (amuse anyone) ???

 

Do it the domestic way; Get a cut out for like $35. You will probably gain more with this, althought I don't know how it would sound. Hell, while your at it, treat yourself to an electric cut out!$130, be able to switch it on and off, off for low end torque, then flip it onfo top end

 

woooow...the Z logo..man thats worth like what? 20-40hp?
its expensive and not worth it...even if it has the "Z' logo. **** man
for 3k I can get a turrrrbbbbooo for an automobile...

 

In defense of VQ... I think he's been more than polite in all his posts so please, let's not turn this into a personal issue.

His father/family owns the Z. I can be a big fan of Ferrari but will probably never own one so does that mean I can't learn or talk about one?

Anyways... keep it civil.... please...

In regards to the exhaust... I'll just wait for the dyno reports to come in.

 

hehe when I called Fujitsubo, they said the same thing......
I will try dyno again soon. But gotta put more miles first.... now 1700 miles. I will try to put 300 more before that.

 

Jspec81, "plus shipping", you are adding 600 bucks there already, and still tax is missing.

 

P.S. if it is air shipping.

 

Gimme some more time.

I didn't post the dyno for the honor of Fujitsubo yet. And when I called them, they told me to break it in. I already talked to the guy who designed it and said no way to lose HP but need some time for ECU to adpot it and break in the exhaust itself. That's why I decided to post 3 dyno result when I finish breaking in G force 0-60 tests, It was a little bit faster with the mod... of course beause of the less weight...

It's now 1700 miles, I drove only 200 miles after the mod, so I will put some more then I will take it to the shop again.

So gimme some more time. Be patient before you guys blame Fujitsubo. They are the most popular exhaust brand in Japan and they were so proud of the 350Z exhaust that they made better one the stock one.... So let's see after the break in period.

Anyway, it made big difference. The car run smoother after the mod. I can not describe well, but I will give u guys a ride if you live in Bay Area. If someone can bring another Z, it's easier to compare And I want you guys to hear the exhaust!!

Thanks.

 

My guess is some here in this fourm has never read a Nissan Factory Shop manual.
Nissan and Ford have ECUs that have adaptive stragities. That is, as the car ages and sensors get weaker the ECU will comensate for the changes. This is why you can change a cam in a Mustang without a chip and a GM requires a chip. This is why it takes a while for any mod on a Nissan to show changes. Some of the sensor data is read while the engine is cold, some read when hot, and some read only when first started. It takes a while for the ECU to learn all the new varibles. Pulling the battery only resets the ECU back to stock settings. This causes the ECU to relearn a little quicker but with OBDII and varible valve timmimg it may take quite a few hours of run time to get the ECU to learn how the new mods affect the senors and their varibles.

(Tako, sorry if this is not a valuable post, I just notice my points raiting is 10 with 84 posts and i usally only post tech related stuff)

 

nono.. I appriciate that kind of valuable post!! 'cause I am busy and not good at that kind of detailed writing Thanks.

 

OBDII GMs do not have replaceable "chips" that I've seen. They might require reprogramming, but not the old style chips, and haven't for awhile.

 

PhoenixINX,

Over the past few days I've seen several posts where you try to play the "Wizened Sage" card by making fun of someone's age.

It's getting annoying because, according to your profile, you're only 23. Not much older than the "kids" you're making fun of. If you want to dispute facts that's fine. Stop making fun of age, it makes it look like you have nothing intelligent to say.