Can it handle it??

UltraIron1

I have an '09 Nismo 370Z and am considering installing the new supercharger system from Stillen. My question is how many out there have experience with this kind of modification and how do the rest of the system components on the Z handle the added horsepower and torque? I definitely like the idea of the added power but don't want to turn my Z into a breakdown and repair nightmare.

XwChriswX

Before everyone else pounces on you, I highly recommend using the 'Search' feature on the forum.



You've been warned.

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tomnavone

And search gtm supercharger while you're at it

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Nixlimited

Yes, tons of information on FI and 370Z in this forum already. To give you the ultra-high level overview: the consensus seems to be that the stock block is safe to 450ish WHP. This is at best an educated guess based on the smallish number of FI 370Zs out there with significant mileage. The GTM stage 1 kit makes about 400ish WHP and the as yet to be released stage 2 makes 475ish WHP. I have seen the Stillen kit make in a range of 400-475ish WHP, though some of the higher numbers were with custom tunes and upgraded SC units. I have driven the GTM stage 1 car and loved it, and I plan to go stage 1 or potentially stage 2 once I can find a car to buy.

I should add that another concern with FI 370Zs is cooling. The engine tends to run pretty hot. Plan on investing in an oil cooler and potentially upgrading other cooling system components. The stock clutch seems to hold up pretty well, but will need replacing eventually so count on that as well.

Nismo370

Don't get that junk go Twins you'll be much happier...

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SPOHN

Do not get the Stillen kit!!! Go GTM.

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esfourteen

the bias on the forums is so strong, it's sad.

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dal1307

I agree, especially bad when it is coming from people who have no personal experience with either option.

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ZInferno0248

I have a 2010 nismo (7000 miles) with a GTM stage 1 SC. I had it installed recently and really like the kit. My only issue was that it took about two months for GTM to send it out, after I paid for it. (I haven't posted the info in the finished build section yet, but will as soon as I have time). I got 390.3 WHP with 323.4 FtLb of torque at 7000 rpm on a Dyno Dynamics dyno (It was 90 degrees that day). I also installed a oil cooler, resonated test pipes, and got a custom tune.
My car was totally transformed by these mods. It is a blast to drive. The SC kit fits the car so well, it almost looks stock. I believe your car gets cut up a lot more with the Stillen kit. As far as reliability, time will tell. My advice would be to think carefully about which kit you pick, do your research, find a good tuning shop, and go for it. A large increase in power will always = less longevity, but I think having a car that stands out from the rest is worth it.

Osiris

GTM FTW. and yes, i am bias.

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SPOHN

What experience do you have to have to recognize junk. It was junk in the 350Z era. I've been around more than enough to know. Seen it first hand.

I have no personal experience eating crap but I know to stay away from it.

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esfourteen

The term "junk" is being used in this thread, please can someone elaborate on what exactly is junk about the stillen kit?

The tune that comes with it is obviously not the best tune you can get, they are going after that CARB approval after all so its certainly not as aggressive. People run it never the less and their cars work perfectly fine. Some people have experienced drivability issues (after the car is warm for example), but the same is true for GTM kits as well, its all about the tune there. I personally wouldn't run any unit without a dyno tune but that comes from bad experiences with canned tunes.

The vortech V3 is a great blower and multiple power levels are attainable by changing pullies/impeller. In stock form it makes similar power to a stage 1 gtm, when modified it has made numbers closer to the new stage 2 gtm. The limit to power with this blower is what the engine and IC setup can handle, not the unit itself. Is 400-500hp "junk"?

The intercooler is a very efficient air-water setup built into the intake manifold, this is probably the only "weak" point if you wanted to run big power with this car (more power then the stock block can handle). The compact design makes it incredibly easy to install and no FMIC blocking air flow to oil coolers/radiator. Another benefit is the lack of heat soak when stopped as the water is constantly being pumped through the heat exchanger/IC.

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Lug

wow

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98intrigue

I agree. I don't have anything bad to say about GTM, but I don't like when people hate on something they don't have first hand experience with. Stillen has been around for a long time and have a relationship with Nissan/Infiniti with dealers installing their kits...so i wouldn't say their kits are junk. Are there pros/cons of each kit? Yes...but I wouldn't say one or the other is junk.

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Osiris

roughly $7-8k for 282 ft lb torque. Price to power ratio sucks. Junk is not an accurate term, maybe lackluster would be better. The car runs, it is stable, it will pull good numbers on the dyno....but due to the low torque, the low end power is only just slightly more than a stock 370. The GTM kit, however, seems to have better torque numbers from what i read.

I have run my car down 1/4 mile against stock 370's and i only beat them by .3 seconds. Granted, if i were using slicks, i may get a full second faster.

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