Nissan 370Z Forum - NA: 342/275. Anyone higher?

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Nissan 370Z Forum (http://www.the370z.com/)

- Engine & Drivetrain (http://www.the370z.com/engine-drivetrain/)

- - NA: 342/275. Anyone higher? (http://www.the370z.com/engine-drivetrain/62667-na-342-275-anyone-higher.html)

XwChriswX

11-05-2012 01:38 PM

http://www.the370z.com/members/xwchr...ure45647-a.jpg

John@Z1

11-05-2012 02:03 PM

Quote:

Originally Posted by Jordo! (Post 2001020)

I haven't followed every post here, but I it seems as though there is still debate over the value of having access to the VVEL maps.

Here's a simple way to determine their value empirically.

Re-load the previous tune where fuel and timing was optimized for Mike's set-up using stock VVEL mapping. Fine tune as needed -- leave VVEL alone. dyno three runs. Take the best.

Then load the tune with optimized fuel, spark , and VVEL tuning. Fine tune as needed on all relevant maps. Take three dyno runs and report the best.

Compare and contrast -- question answered.

If Mike makes another 10-12 whp (or more) at points throughout the rev range when adjusting all three parameters together as opposed to just two, clearly having access to the VVEL maps is helpful for extracting maximum power.

I tuned the vehicle and I'm telling all of you this power was not gained in VVEL tuning alone. And yes VVEL is helpful but(I seem to have to say this next part a lot) please don't think this is in VVEL tuning alone. Mike has pretty much shared his mods with everyone. There is no need to perform the runs you just mentioned as the VVEL tuning we performed did not net very high numbers(but hey, don't take my word for it I only tuned the car).

Mike	11-05-2012 03:38 PM

Lets just get the remaining few sets of these headers sold and installed and see what the numbers say!

threeseventy

11-05-2012 05:07 PM

^ THERE IT IS... GLWS guys! :tiphat:

Jordo!

11-05-2012 05:54 PM

Quote:

Originally Posted by John@Z1 (Post 2001322)

Obviously the gains are primarily due to other bolt-on mods -- particularly the headers... I don't think anyone here thought 30+ whp came just from valve timing adjustment on a NA car.

What I'm trying to determine is the approximate degree of improvement with this set-up achieved from tuning alone with the ability to ALSO tune VVEL.

Can you give us more detail on that. For example, by how much were you able to increase max lift? Are there limits built into the new software (or constrained by the ECU) to prevent causing physical damage?

I'm not questioning your word -- I'm seeking more detailed information regarding the new tuning parameter...

SPOHN

11-05-2012 05:56 PM

Keeping it simple I just like the fact of a mod that produces great power and weight savings

Mike	11-05-2012 06:07 PM

Quote:

Originally Posted by Jordo! (Post 2001793)

I would suggest you call Z1 and talk to Jon directly. I can't say for sure, but I know if I was the tuner, I wouldn't post what I had done for public consumption. There are too many shops that steal and copy other peoples actual products and certainly intellectual property too.

Jordo!

11-05-2012 07:38 PM

^^ Fair enough... but I was really only looking for general info, not actual maps or specific values on anything...

More like, "we added more overlap lower in the rev range to build torque and raised lift by several degrees over the OEM tune approaching redline..." and "yes -- if you go to far, the ECU will set a CEL, so you can't accidentally hit the pistons with the valves from the tune alone" or whatever they did/discovered. (obviously I am just speculating on all of that -- none of that may be accurate).

The specific settings in anyone's map will vary from set up to set up and need to be empirically determined on a dyno anyway.

I mean no harm -- I just crave knowledge :p

Actually -- just knowing when uprev will make these maps available to end users would be great! Anyone know?

gabe3d

11-05-2012 09:59 PM

I agree that it's probably advantageous to Z1 to keep their findings however small or large they are to themselves since not many tuners have had a chance to delve into this yet.

John@Z1, i don't think it is divulging too much information, but would it be possible for you to answer my previous post.

Quote:

Originally Posted by gabe3d (Post 2000108)

Thanks for sharing this piece of information. From eyeballing Mike's and your dyno there isn't much difference in the power delivery in regards to how it slopes and how far it extends. Mike's car seems to have a nice vertical bump of a few wtq everywhere, perhaps due to better scavenging from the exhaust manifold, which later translates into that slight edge in whp. Would it be possible for you to overlay the two graphs? Also, from a scale of 1-10 how far along do you think mike's tune is in regards to VVEL tuning?
...
Not knowing what can be accomplished by osiris in tuning in that department, i can only ask the experts like Z1 to see how they feel the progress might evolve from here on out since they've been exposed to the capabilities.

John@Z1

11-06-2012 09:08 AM

Quote:

Originally Posted by gabe3d (Post 2002253)

I would much rather you call me at 770-838-7777 ext 311. We'll try to overlay the runs on the next vehicle due to not recalling where I started tuning VVEL on Mike's car. The next tuning session will be saved a little different to be a little more informative to check over the good and the bad.

We plan on tuning a 370Z this week that started life at around 273rwhp and now it has right over 7,000 miles with Momentum headers, Test pipes and Gen 3 intakes(stock cat back). We will keep you guys in the loop.

leighspped

11-06-2012 09:14 AM

Quote:

Originally Posted by John@Z1 (Post 2002919)

do you have the temps for the 273rwhp?

John@Z1

11-06-2012 11:05 AM

Quote:

Originally Posted by leighspped (Post 2002930)

do you have the temps for the 273rwhp?

No, that was dynoed long ago. We will perform a before run on tuning and document the runs as other changes are made.

theDreamer

11-06-2012 11:06 AM

Congrats Mike on some great numbers.
Any plans to do more engine work to see what else is left to be made N/A with the VQ37?

Mike	11-06-2012 12:58 PM

Quote:

Originally Posted by theDreamer (Post 2003172)

Congrats Mike on some great numbers.
Any plans to do more engine work to see what else is left to be made N/A with the VQ37?

probably not. the only possibility is exhaust cams, maybe in a year. They would be close to 3000 installed though, with at least 20 hours of labor.

daisuke149

11-06-2012 01:04 PM

Quote:

Originally Posted by Mike (Post 2003438)

probably not. the only possibility is exhaust cams, maybe in a year. They would be close to 3000 installed though, with at least 20 hours of labor.

do it in the winter. : ) i'll swing by and we can tear it apart and do it!

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