All righty bois!

good news for 2003 VQ35 drivers, TechnoSquare has cracked the ECU code and preliminary results are back.

we used a Bosch Dyno to do tuning, and came up with ~20-25 hp gain at the crank on a stock Max--

Ignore the lowest line, that was done in the wrong gear. The 2 other lines (brown) is stock and red is with ECU. The car had modify stock exhaust (I think mid section taken out). That was it.

The owner is going to dyno his car at a dyno jet this week and he will post results here...

Thoughts? Comments? Please post. i will post a larger image later tonite

 

Wow! Looks goodly Cheston!

 

i say....where do i sign up....amex needs to get charged....

 

i love it!!!

 

Awesome! Now we need one for the VQ30DE-K.

 

I can't see the picture for some reason, but this sounds sweet. Depending on the cost and time to do this, I would definitely be interested. Keep us posted, please.

 

i think its going to be $595. Thats the # I saw on the alti boards...
GD anyone?

 

sounds good!

 

$595? Ouch...

 

Did they ever figure out how to RAISE the redline on the VQ?

 

'
adnagoih8yi

 

CHEAP ****! I'd pay DOUBLE that!

As long as it had at least a 7000rpm rev-limit.

Appears to be a 13+whp gain in some places.

 

Some interesting links from our alti friends...

http://www.technosquareinc.com/350z.htm

http://www.nissantalk.com/forum/show...hreadid=118852

http://g35driver.com/forums/showflat...=5&part=4&vc=1

Chebosto is all over these links!

 

Have you seen a dyno?

 

looks nice...headers and this should make my max even more healthy

 

Do they incorporate the ability to turn off the higher performance? I know that APR for Audi makes an ECU that you can toggle between stock and mod so that among other things, you can preserve gas, etc. I always thought this was a great feature and would like to have it in any ECU mod for the Max.

 

you said good news for 2003 vq3.5 drivers....I am assuming this will work for 2002 models as well

 

PLEASE tell me it's so.... anyone?

 

I don't think so.

I *HEAR* they switched to a "flash" type chip. You guys could most likely have them burn you a chip and then you'd have to remove the old chip/sodder it.

Or maybe swap in a 2K3 ECU.

 

oooohh nooooo.....

 

is that possible?

who can I call to ask these questions? I am really interested in pursuing this and will definitely give it a hard look when it's tested more.

 

Hey, some of us don't have $600 laying around, or have the get up and go to shell that out at one time. I am a student, and even though I do have a savings account, I don't think I can allow myself to spend that much at one time. Nothing cheap about it, just did not expect it to be over $350.

 

I thought the 02's were "flash" type as well. Like those guys who got the hesitation fix..werent their ecus flashed? Can someone look up the part #'s for the ECUs and see if they are the same?

 

I don't think you have a realistic idea on what ecu modifications go for on import cars. Take a look at BMW flash upgrades. You will think $600 is a bargin. You have to pay to play in this regard.

 

I think they were just "re-teaching" their drive-by-wire to play nice.

I believe the 2K3 and 350Z share the same "flash" type ECU's. Not sure who said that, but sounded knowledgeable.

 

I guess I don't have much of an idea, since I only thought about the VW chip upgrades, which are somewhere in the $400 range, if I am not mistaken. How much work goes into "flashing" and reprogramming the chip? How is the amount of work compared to the demand for the product? Somehow, I think the demand for the product pushes the price much further than the work involved.

 

Questions.

Does this apply to autos?

When can we start ordering and how?

 

Honestly, don't know. DAVEB *might* be able to find out if the connectors are any different.

Someones going to have to be the guinea pig.

 

They are probably looking at their limited market. You can't sell flash upgrades for $350 if you can only sell 50-75 of them. Also there are only 1-2 companies thare are able to crack the Nissan ecu code. So there's that to consider. VW has many aftermarket companies and their code doesn't seem as hard to crack(ie.. less research $).

If you are in school, consider a 200 series macro economics class.

 

Took one, hated it, now pre-med.

Thanks for the info, though..

 

I paid $595 for My SE-R JWT ECU that gave me a whopping 5 WHP. There is a lot of R&D that go into ECU upgrades, especially with newer cars. I think the 02-03 max chips are 32 bit, where as the older ones were 16 bit. Then again, what the heck do i know!

 

$500ish is more accurate: http://www.goapr.com/VW/products/ecu..._jetta18t.html

LOTS of work and HUNDREDS of dyno pulls NOT to mention some one beating the poop out of their car, *cough**Cheston**cough*.

APR sells lots of ECUs, so that probably helps bring down the price.

 

so I guess we wait for Chebosto to get more info?

Chebosto !!!! Get more info !!!


edit: so if this is 13hp to 25hp gain, what would that translate to in the 1/4m and 0-60? Hypothetically speaking of course.

 

damn...if this baby works for my 2k2 .....it will be my next mod....

 

Does anyone here know how to remove the ECU from 2k-2k1? I need to do some messing around with it.


SHIFT_woosh

 

I could have swore that when Cheston posted before about the Z ECU being modified, that he said the 2k2s are different than 2k3s.

 

The Nissan parts catalog isn't much help. It shows 3 different ECM part #'s for '03 6-speeds alone! I might be wrong, but I think the basic architecture of all the 5th gen ECM's are about the same. I'm pretty sure the pin breakdown is different on '02+, but it seems odd that we would use the same equipment to reprogram them (Consult) if how the chip is "flashed" is fundamentally different.

 

sounds very interesting! Keep us in tune of further developments please.

 

Thanks Cheston!!

Do I need to round up 2003 ECU's for everyone to put in their 2002 cars?

 

If thats the case, i'll take one!