Nissan 370Z Forum

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-   -   GTM Performance Engineering Stage 1 Turn key Supercharger kit In house Installation. (http://www.the370z.com/forced-induction/20076-gtm-performance-engineering-stage-1-turn-key-supercharger-kit-house-installation.html)

theDreamer 06-11-2010 02:49 PM

Quote:

Originally Posted by shumby (Post 572859)
From Sam i know th enumbers were not anywhere near where we wanted them. So really i do not care. I want the best out of this and this is what Sam sugests to get theat. I trust him fully. he did warn me about the LTH and that it might be an issue. We just did not think it would be this much of an issue

If you had set numbers you wanted to hit then you probably made the right choice to just get to that. Hope it turns out great. :tup:

shumby 06-11-2010 02:50 PM

lol i think he was just sharing. now if he could do this with my 5.0 FX i would be sending him it right now

shumby 06-11-2010 02:51 PM

damn one post to slow

bullitt5897 06-11-2010 02:52 PM

probably was... :tup:

Sam will have you taken care of. Your gonna have to kiss your wifes butt for a long time!!!

shumby 06-11-2010 02:53 PM

that sounds good to me . lol

i think the lack of kissing it will be te issue

rednek01 06-11-2010 02:54 PM

Quote:

Originally Posted by bullitt5897 (Post 572868)
these are two totally different animals the 5.0 and the VQHR especially down to the tuning aspect.

Domestic sports cars are built so that the aftermarket can really pump them up... its been that way for decades.

HUH? both of them have independent variable valve timing. How is it totally a totally different animal? the concepts are the same the engines are similar. the programming is different, yes but they aren't that different.

theDreamer 06-11-2010 02:55 PM

Quote:

Originally Posted by shumby (Post 572874)
that sounds good to me . lol

i think the lack of kissing it will be te issue

Just buy her something fancy, usually shiny. :tup:

JB-370z 06-11-2010 03:08 PM

Quote:

Originally Posted by theDreamer (Post 572877)
Just buy her something fancy, usually shiny. :tup:

No these kinda things can;t be bought. . .Well I guess if he came home with some diamonds she would kool down. But untill then his @ss is grass :eek:

theDreamer 06-11-2010 03:44 PM

Quote:

Originally Posted by JB-370z (Post 572895)
No these kinda things can;t be bought. . .Well I guess if he came home with some diamonds she would kool down. But untill then his @ss is grass :eek:

True, guess a shiny new supercharger will not do it? :ugh2:

FuszNissan 06-11-2010 04:03 PM

Quote:

Originally Posted by theDreamer (Post 572950)
True, guess a shiny new supercharger will not do it? :ugh2:

:icon18:

FuszNissan 06-11-2010 04:03 PM

If I was Sam, I would include a set of Diamond Earrings with every F.I. purchase.

bullitt5897 06-11-2010 05:27 PM

Quote:

Originally Posted by rednek01 (Post 572875)
HUH? both of them have independent variable valve timing. How is it totally a totally different animal? the concepts are the same the engines are similar. the programming is different, yes but they aren't that different.

The 370z has a much more valve overlap than the mustang. Hence the problem that shumby is having with the SC setup. We have different designed valvetrain. Yes we both have a type of vvel but so is vtec. Doesn't mean we have vtec lol

Jordo! 06-11-2010 07:21 PM

I don't get it. Is it that their reflash device can not edit the VVEL maps, or just no one knows what they're doing? They should be able to nail this within 4-6 hrs of systematic changes to the maps provided they have full control over VVEL...

As someone else said, too much valve overlap will blow the boost right out before enough cylinder pressure builds. At least you don't have to deal with the built in restriction of a turbo...

Once they get the rough fuel and spark advance map sorted, they just need to run successive dynos manipulating valve and lift. Overlay the dynos to find where power is gained vs lost, while noting boost levels (note that more boost doesn't always mean more power either).

My educated guess is that you need less overlap in the low and midrange and probably don't even need to mess much with lift until the boost really starts to build (centrifigul's build boost late, so this means few changes until later in the rev range).

If it needs changes early on, it might actually be flowing less air if the manifold design was altered from stock, so it might need a little less lift and a little more duration until higher RPM's when boost starts to seriously build -- again, just a guess).

I'm really sorry you are having a tough time with this -- I hope they figure out what they are doing soon -- good luck!

Neo187H 06-11-2010 07:25 PM

Quote:

Originally Posted by Jordo! (Post 573206)
I don't get it. Is it that their reflash device can not edit the VVEL maps, or just no one knows what they're doing? They should be able to nail this within 4-6 hrs of systematic changes to the maps provided they have full control over VVEL...

As someone else said, too much valve overlap will blow the boost right out before enough cylinder pressure builds. At least you don't have to deal with the built in restriction of a turbo...

Once they get the rough fuel and spark advance map sorted, they just need to run successive dynos manipulating valve and lift. Overlay the dynos to find where power is gained vs lost, while noting boost levels (note that more boost doesn't always mean more power either).

My educated guess is that you need less overlap in the low and midrange and probably don't even need to mess much with lift until the boost really starts to build (centrifigul's build boost late, so this means few changes until later in the rev range).

If it needs changes early on, it might actually be flowing less air if the manifold design was altered from stock, so it might need a little less lift and a little more duration until higher RPM's when boost starts to seriously build -- again, just a guess).

I'm really sorry you are having a tough time with this -- I hope they figure out what they are doing soon -- good luck!

No one has cracked VVEL yet, hence the issues.

shumby 06-11-2010 07:28 PM

^^^ sumed it up nicely in one line. thank you


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