GTM Performance Engineering Stage 1 Turn key Supercharger kit In house Installation.

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...

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

theDreamer · 06-11-2010, 02:55 PM

Quote:

Originally Posted by shumby

that sounds good to me . lol

i think the lack of kissing it will be te issue

Just buy her something fancy, usually shiny.

JB-370z · 06-11-2010, 03:08 PM

Quote:

Originally Posted by theDreamer

Just buy her something fancy, usually shiny.

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

theDreamer · 06-11-2010, 03:44 PM

Quote:

Originally Posted by JB-370z

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

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

FuszNissan · 06-11-2010, 04:03 PM

Quote:

Originally Posted by theDreamer

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

FuszNissan · 06-11-2010, 04:03 PM

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

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!

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.

Jordo! · 06-11-2010, 09:16 PM

Quote:

Originally Posted by Neo187H

No one has cracked VVEL yet, hence the issues.

Meaning no one can even tune the maps or they can edit the values but have no idea what they are doing...?

If the former, that's going to make FI a PITA to tune...

fstrnldr · 06-11-2010, 10:18 PM

Quote:

Originally Posted by Jordo!

Meaning no one can even tune the maps or they can edit the values but have no idea what they are doing...?

If the former, that's going to make FI a PITA to tune...

The cams aren't even controlled by the same ECU as the engine. VVEL has its very own "ECU" that gets a single can bus data line from the engine ECU, then makes the adjustments to the cam duration and lift based on that data. It makes things a bit more complicated that just some editing on the tuning program everyone is using.

Now for the real questions ... how many anniversaries does Shumby have ahead of him before his wife will finally let this go?

good luck on both accounts

Jordo! · 06-12-2010, 12:49 AM

Quote:

Originally Posted by fstrnldr

The cams aren't even controlled by the same ECU as the engine. VVEL has its very own "ECU" that gets a single can bus data line from the engine ECU, then makes the adjustments to the cam duration and lift based on that data. It makes things a bit more complicated that just some editing on the tuning program everyone is using.

Now for the real questions ... how many anniversaries does Shumby have ahead of him before his wife will finally let this go?

good luck on both accounts

Really??? Huh... I had no idea. Still learning...

shumby · 06-11-2010, 07:28 PM

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

06-11-2010, 02:50 PM	#1 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	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 __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

06-11-2010, 02:51 PM	#2 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	damn one post to slow __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

06-11-2010, 02:52 PM	#3 (permalink)
bullitt5897 Premium Member Join Date: Jan 2009 Location: North GA Posts: 6,831 Drives: Twin Turbo Z34 Rep Power: 3683	probably was... Sam will have you taken care of. Your gonna have to kiss your wifes butt for a long time!!! __________________ *Shop Cars: 2013 318whp Nismo VspecII 370z SOLD, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054*

06-11-2010, 02:53 PM	#4 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	that sounds good to me . lol i think the lack of kissing it will be te issue __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

06-11-2010, 04:03 PM	#9 (permalink)
FuszNissan A True Z Fanatic Join Date: May 2009 Location: St. Louis Posts: 14,275 Drives: Pure Sex Rep Power: 542	If I was Sam, I would include a set of Diamond Earrings with every F.I. purchase. __________________ Mods: Too Many to list! LouFuszNissan ZDAYZ 2012

06-11-2010, 07:21 PM	#10 (permalink)
Jordo! A True Z Fanatic Join Date: May 2010 Location: nirvana Posts: 6,394 Drives: 2023 NATM Rep Power: 418	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! __________________ Enjoy it. Destroy it.

06-11-2010, 07:28 PM	#15 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	^^^ sumed it up nicely in one line. thank you __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

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