GT Motorsports: 370Z Supercharger system development

LiquidZ

Kenne Bell FTW

I agree. Let's stop the bickering. Both companies will offer great products and both deserve a fair chance.

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SAM@GTM

It is not only about dyno numbers… of course results are important but there are other factors like design and reliability that are equally important .

When we started designing the kit we did not choose the easy way of supercharging the 370z, We chose the design that gives all you can ask for in a force induction kit without any compromises, Good performance,relayblty and factory oem drivability .

Sam

travisjb

In all seriousness, didn't mean to imply that Sam or anyone on this thread had mal-intent... Sam and team have been nothing but helpful to me for over a year, with advice parts etc... truly SORRY if it came across that way... the folks I referenced raised some good questions... my intention was to stimulate the conversation on the Stillen thread re points made here without sounding like a GTM fanboi...

over/out

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2009 370Z #104
*For Sale*

SAM@GTM

Travis it is all good

frost

Travis = much more polite than I.

G37Sam

Sam do you think the larger manifold that comes with the Stillen kit will hinder the VVEL's operation and performance in general? Back in the previous gen Z's, those upgrading to FI manifolds needed cams to get that extra air into the engines efficiently I believe

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SAM@GTM

I would not call it ripping apart… I think technical questions and concerns should be welcomed any time .

Wouldn't you rather somebody bring up the mass air flow sensors placement issue before you invest in a supercharged kit with air temp compensation that has been completely thrown out the window ?

Sam

2fast4thelaw

As my oldest says in this kind of an instance. "That's Tight!"

I am comparing in my head between this and the Stillen and I am planning on installing myself and I am just not commfortable in replacing the intake. Its a little too radical fopr my tastes and I dont live in a area that has HOT weather. Its pretty moderate here in Denver year around so I am not so concerned with air temps.

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To the optimist, the glass is half full. To the pessimist, the glass is half empty. To the engineer, the glass is twice as big as it needs to be.

kdoske

ehheeemm, COOOUGGH*WHIPPLE*COOOUOUGH





Asked this same question in the Stillen post earlier...

SAM@GTM

Sam

Let me take my GTM hat off for a minute.

I as a Tuner have some serious concerns about what stillen did with their manifold disghn and yes it will hinder the performance and drivability of the car in general.

issue # 1

The mass air flow sensors contains the air temp sensors so by placing the sensors on the hot side of the blower and then cooling the air inside the manifold the ecu is not getting the right info and will cause a lot counter actions from the ecu due to the extreme air inlet temp it seeing, if you ever touch the hot side on a vortck blower you will literally burn you hand . these ecu are very advanced and this disghn will cause a lot of issue .

issue # 2

The factory ecu uses two different inputs form the mass air flow sensors to control the fuel trim on bank one and bank two and literally there is separate maps for each bank when it comes to controlling the fuel, these fuel maps are not the same meaning the engineers at nissan knew that the amount of air entering each bank will be different and therefor every bank uses it own majoring devise (mass air flow sensor on each bank)to control the air fuel ratio.
Now when having both sensors on the same tube reading the same voltage to the ecu...…i think the answer is clear.

Maybe stillen knows more about the VQ37VHR then Nissan them self .

It is clear to me that stillen rearranged the car around their supercharge kit without taking all the factors in.

Sam (without the GTM hat)

biggersNISMO

Regardless if you choose GTM, Stillen, or any other company, I'm sure the peeps from CONOC can pitch in and help on the install. We could just grab some beers and pick up the tools and take our time on the car.

And yes, air temps our the least of our worries up here in the Mile High City. The snow is my fear

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an awkward morning beats a boring night CONOC.NET

SAM@GTM

Air temp compensation table look up is utilized at all time and will effect not only power outcome and knock control but also cold/hot start and could also lead to severe engine damage sense the ecu will lean out the the air fuel ratio as the air temps rises

Sam

StillenZ

can't wait to hear some responses from Stillen on all of this... I hope they have an answer... I don't even freakin know half of the things you guys have discussed lol, but doesn't sound great

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Stillen Dual Exhaust / Stillen Gen 3 Intake / Stillen Headers / Eibach Pro-Kit / Euro Fog Lamp / 1000W JL Audio Amp / 2 - 12' JBL P1222's / Pioneer In-dash Nav

m4a1mustang

I didn't mean to imply that the numbers were the be all end all. It's really going to be a function of performance, quality, and cost.

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- Steve

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MMC Racing

Doesn't surprise me that one vendor would talk down about another vendor's product based off a picture. Happens every day. Worth about 1 shiny penny to me. Products will reveal themselves all in good time. If product A is ****, people will not buy product A (all things being equal such as price)...