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:

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

damn one post to slow

probably was... :tup:

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

that sounds good to me . lol

i think the lack of kissing it will be te issue

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.

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:

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

:icon18:

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

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

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.

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

This is terrible news to hear Shumby. I really hope I don't have the same issues! Hope you get this figured out soon, this really sucks with the wifey. Good luck..

So why did stillens kit not have any issues? does anyone know the difference?

No one has LTH's and the Stillen SC yet. RCZ didn't test it out yet with the shorty headers yet?

Those should have no effect, only help generate more power. i am curious why they are having problems? This is really interesting, I am now on hold on pulling the trigger on the SC kits

With stock headers and cats all is well.

RCZ thanks for the thoughts and well wishes. I think you will be fine with the HFC and headers. The LTH are just too much free flow and the VVEL can had up to 280 deg duration if i remember correctly.


Anyone wanting the SC setup and still on stock cats or HFC should be 100% fine.

RCZ when you doing your dyno run's? I still want to beat you to this. lol

would going different sized pullies or something like that be a way around this?

that might increase the flow a bit but would take the SC out of its eff. range. so not really but not a bad thought

Not out of my efficiency range :)

Tuesday. I didnt know it was a race haha. All I gotta do is tune though.

Can someone comment more on the more aggressive pulley option?

I would keep the LTHs and all for later cuz somewhere down the line they will break the VVEL.

I think the way Stillen is doing different physical stages that this might be a more viable option to keep LTHs.

what i thought we had $100 on it lol.

same is doing different stages too. so not quite following

I thought Stillen was using different sized SC parts for their different stages while GTM was doing it by tuning but not sure.

nope GTM is runnong 3 different staged SC. they have the same footprint but different internals. it is not done through tunning

oh ok, is Stillen doing the same thing?

I am not 100% sure so i'll let RCZ or still answer that. out just check out page one of their thread that should have the info

well if you decide to keep the LTHs on and take off the SC Ill give you halp price for it and pay for shipping. JK. You will be zoom zooming soon enough.

lol. ya by monday i hope. but we all know **** can hppen

No no, GTM was doing the different housings for the different "stages".

Stillen is using one housing for all their kits. The difference in the stillen kits isn't power, its what comes with the kit. For example the tuner kit doesnt have fuel or tuning. Everything else remains the same as the normal kit. If I remember correctly the max psi from the Stillen SC unit is like 18psi, so I got room to explore ;)

Does the exploring have a date on when it will happen? :D

when I get bored of 450whp? So no, no plans to crank the boost too much. Maybe eventually if Stillen releases a 10psi pulley or something fun like that.

This is Shumby's thread, lets not derail it.

no on GTM same housing different internals. :tiphat:

Hey Shumby, why replace the LTH's? Why not just install a HFC on the LTH's?

You could get the best of both worlds..... max evacuation from the LTH's and back pressure from the HFC's

Some modifications will be required though :tiphat: