GT Motorsports: 370Z Supercharger system development

travisjb

to your credit, this is definitely more specific and our posts crossed paths... I agree on a different thread - or just go to the stillen thread and post your thoughts directly there...

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2009 370Z #104
*For Sale*

Buddy Revell

Agreed. It would be interesting to read Kyle and Josh's responses on that thread to stormcrow's points about Stillen's previous and current SC kit designs.

1slow370

well, when you use a water to air intercooler you kinda need hoses. the gtm kit is using a rotrex unit that has it's own oiling system that needs a pump, filter, ?reservoir maybe? not sure on this one, and a crapload of lines. you also need to install new front side accessory brackets, which may require wire/hose extensions. There is also the difference in tuning stillen is most likely using a cobb accessport this time instead of the piggyback they normally use and they have mentioned that they may be divorcing the iat duties from the air mass sensor and relocating them to an individual sensor in the manifold while gtm is going with a blow through setup which means they won't be able to detect pressure in the manifold from the stock 1bar map sensor and the sensors being blow through won't be able to read the extra airflow so there is going to be some serious hacking of the tune on their part to get it to run. both kits are going to have to use recirculation valves as without a pressure sensor the car would run excessively rich on off throttle if vented to atmosphere. I suggest you stop being a tool saying you know more about F/I than the rest of the world and actually read both threads like most of us have.

Edit: why don't we all go back to the boring state of sitting in the corner and waiting for both companies to actually release their kits before making decisions and being a bunch of racists prejudicing the kits based on thier manufactures. Oh and most of us think the old m62 stillen kits were retardly underpowered

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SAM@GTM

With all do respect here, you are way off with what ever you posted above in regards to reading pressure and rich off throttle. i really can't go in detail right now but i will be back to comment on you post after finishing the press release

Sam

jmlenz

1slow370

Sorry got a little muddled posting about both kits at once. A few pages back i asked you if you had changed out the stock MAP sensor and you had said no, being blow-through you have no way of gauging the mass of the air in the manifold then so you must have almost rewritten the tunning tables of the car as from like 3000rpm to redline the map would be maxed out. You have a blow through set up so you wouldn't have to worry about using a blow off valve as the pressure would dip below the max range of the map sensor and the engine would have all the information it would need again. The thing with not using an upgraded MAP sensor and an extended table is that any time the motor is over 1 psi it will only be able to reference a single line on any table referencing load so the motor will be running off of maybe 6 cells of the maps for fuel and igniton when ever it is under boost instead of having the full map to work from. wether you would be at 8 psi or at 2 the motor would only know it has over 1. Which is why i keep asking if you upgraded the damn map sensor or not.

Stillen on the other hand has gone the other route of draw through so even if the pressure is off it is measuring the flow of the air at atmospheric through the MAF sensor so it can calculate the mass of the air off of that and correct the way the engine runs with the maf meter tables. which through the GTM system would also be damn near maxed out when under boost, as the amount of air flowing through the sensor would remain the same only it's density would be increasing constantly. stillen would have a problem if they ran an open blow off valve as the metered air would be disappearing. The gtm kit relies on not metering anything and just telling the motor how much air it should have (unless you upgraded that MAP sensor) as they have taken a N/A car retained all the stock sensors(unless they upgraded) and the car is in no way designed to read pressures over atmospheric in that stock form unless you move sensors around like stillen has.

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