APS

Not sure what it is you don't like about the interceptor computer approach for engine tuning though imho opinion this is the smartest technical approach for mapping igntion timing, air fuel ratio and turbo boost pressure across all rpm and load sites whilst still retaining all of the wonder features of the stock Nissan computer to make compensation changes for altitude and barometric pressure.

I'm 100% postive that if I had your car on the dyno for only 1/2 an hour you would be amazed with the mapping/tuning capability of the interceptor style computer.

Thanks

Peter

JoneZZZ

iTrader: (1)

MIAPLAYA......Has Turbonetics had proven successes reflashing the '04.5 and higher ECU?

Actually this applies to APS also....

APS

I'm sure that a single turbo system design does not allow sufficient space for factory Nissan cats to be retained in the stock position (and one factory cat would not have sufficient gas flow) so for this reason alone a larger higher flowing single cat converter would be required for high powered applications.

Peter

MIAPLAYA

iTrader: (3)

No one has any success period on 05s.. My car is an 04.5 (newer revision of ECU prior to 05 revision) and they have had no problems now that Technosquare got the flash set. (Turbonetics basically bought the flash gear from Technosquare)

SO far no one has finished stuff for 05. Turbonetics and Technosquare are working on that right now...

MIAPLAYA

iTrader: (3)

Which is exactly what Turbonetics did with their cat version.

JoneZZZ

iTrader: (1)

let me clarify my question to both companies...

it seems that there have proven success with the piggyback/ECU reflash.....can you explain how you have overcome the challenges presented with the '04.5+ ECU's?

JoneZZZ

iTrader: (1)

Miaplaya....thx!!

JoneZZZ

iTrader: (1)

Excellent discussion, btw......

MIAPLAYA

iTrader: (3)

Not sure what you are looking for here. Since I am not a Turbonetics employee I'm not sure if I even have the answer you want...

zland

Great thread guys. Keep it informative and positive....

APS

What tuning challenge is there with the 04.5 ECU's?

To the best of my knowledge it's all a very straight forward deal, simply map the ignition timing, air fuel ratio and boost control strategy on a load based dyno for the fuel octane utilised.

From the info I have there is no different computer or different tuning maps required for a 2004.5 Z car, the ECU computers are,

1) pre October 2003

2) post October 2003

This applies to the cars build date.

Thanks and hope this helps.

Peter

MIAPLAYA

iTrader: (3)

Well were at LEAST two different version of the ECU for 2004. As a matter of fact I am aware of some guys from Unichip who even had to re-tune/re-work the system for the later 04 ECUs as the changes to it were VERY significant. Not saying that YOUR specific tune had to change but rather that some Unichip reps were at Technosquare a while back trying to find out how the computer was managing to tune out their changes.. For 05 the ECU is COMPLETELY different...

APS

Miaplaya, I believe your information is incorrect, according to Nissan there are only 2 computer models to suit the 350Z, (not sure about the 05 model) the confusion occurs because Nissan does not use vehicle years models to describe when specifications change.

Nissan dealers use month and year of the vehicle build date as shown on the decal attached to the drivers side door B pillar.

Because the ECU change occured in October 03 built cars though the 04 model Z car was introduced in June 03. This means that in the case of the 350Z coupe there are approx 5 months of the 2004 model year build with the first generation ECU and the the subsequent 7 months with the second generation ECU.

As it happens because the APS engineering car is December 03 build it has the latest generation ECU commonly incorrectly called the 2004.5 ECU, APS can tune/map either generation computer (1st or 2nd generation) without any issues.

Hope this clarifies the issue, I understand it's a little complex though this is because of the way Nissan releases their model year cars.

Thanks

Peter

JimRHIT

iTrader: (6)

Would you rather they call it the 2004 and 5/12ths ECU?

APS

Good post, that put a smile on my face, it's a confusing issue though ultimately there's only 2 different ECU's in the Z car excluding the new 05 model, this APS engineers are still checking.

Thanks

Peter

JimRHIT

iTrader: (6)

Just playin dude. I think we got it all cleared up with the ECU issue. Just want to make sure that there are now THREE different ECUs in existence.

Original
The one commonly referred to as 04.5
The NEW 05 MY

Is this correct?

Brandon@Forged

The 300 HP models IMO SHOULD be different, due to valve/cam timing on both intake and exhaust sides.

turbo-maxima

its a bigger turbo. It will make much more power and yeild better 1.4 mile times. Low end torque is good but it really only helps in 1st and 2nd gear. After that you want a turbo that makes high rpm power. Your going to roost your tires with all that low-end torque. With the APS you get to roast them at 50 mph.

APS

The new 05 model Z car may have the identical computer to the OCT 03 on cars this we need to verify and will over the next few days.

The 35th anniversary model Z car may well have a different computer, well at a minimum different computer maps, again we need to verify this ECU over the next few days.

Thanks

Peter

APS

I believe the reality is the APS single turbo system will deliver a superior boost curve across the entire rpm range (higher averaged Horsepower and Torque), this is a direct result of the shorter and smoother flowing exhaust manifolding (exhaust gas energy) to the awesome APS/Garrett GT series dual ball bearing turbocharger.

Add to the above combination a huge low restriction (low pressure drop) bar and plate air to air intercooler for a massive drop in charge air temperature and the result is an awesome boost curve, particularly impressive in the low to mid rpm range, this delivers loads more Horsepower/Torque right when you need................just hit the go pedal and the power is both instant and awesome.

Turbocharger performance is all about the entire design of the system, not just one single component. It's the entire combination of the ex manifolding, turbo design and matching, intercooler system, return fuel system, ign timing control and CAS harness solution, boost pressure control, exhaust system design, hi volume air cooled oil pan, that delivers the ultimate result, the end power and durability result is very relevant to the thoroughness of the engineering and dedication behind the project.

Bottom line the additional competition drives APS to be good, better, best and we welcome this healthy competition, this provides consumers with the best possible performance/products at the most cost effective price, all good.

Thanks

Peter