RJ MFG Supercharger kit Feeler...

MadSciSnails

The allure of this particular kit to me is its simplicity in design. I drive my z34 more or less daily. I feel the overall design will be more forgiving on a regularly driven car. The price point isn't that big a factor. Simple is reliable. Use your existing intake setup. Minimal plumbing and wiring modifications necessary. That's the way I picture it at least. It's all speculation until we see this thing.


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bcfromfl

I'm not one to condemn innovation, and I'm interested to see where this project goes...although the potential hood issues (and impracticality of pleasing a variety of different Z owners) may keep this within a narrow niche.

I've pondered why turbos seems to be a more popular performance option for this car than s/c, and I think it's just a raw numbers thing of more hp. If you enjoy competitive drag racing, then that's another reason to go turbo. But if the car is a daily driver, or otherwise just gets used on public roads, s/c is clearly the better choice, with its superior power band, and as was mentioned above, closer in feel to a NA engine. I owned a turbo car years ago, and did not like the power band.

I know there are also enthusiasts who like things LOUD and to announce what's under the hood audibly, but there are also others (me included) who like to remain anonymous, and not annoy the neighbors!

Chuck33079

The reason you don't see more sc cars around here is that Stillen was the only option other than GTM/Gamma, and until recently the Stillen kit was problematic (to be kind). The A2A setup fixed all that, but it's only a recent product.

Turbo cars from years ago don't really compare to today's setups in terms of driving feel. In your other thread you mentioned your experience was with a 1980's 4-cylinder turbo car. That cannot be compared with what a Z feels like with a turbo setup in any meaningful way. Most of the drawbacks you mention simply do not exist with a properly designed turbo kit. The sc isn't a clearly better choice, it's just a different option.

I'm also not sure what you mean with your last comment. Are you saying that turbos are inherently loud? That's not the case unless you dump everything to atmosphere, and most don't do that. Other than some whooshing and the BOV, they sound a lot like a regular Z with a mild exhaust.

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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent

daveb91

I would say performance wise...its a great option...deal killer will ge the hood and I dont think I will be alone with that opinion. Dont have a problem with price just the damn hood thing.

phunk

A PD produces a dyno graph that looks like a NA engine, but driving around it does not feel like NA at all. There is a re-circulation valve in the intake manifold that vents the positive pressure back to the SC inlet so that you are not running boost while at part throttle. This valve VERY DISTINCTLY and abruptly closes when you give the engine enough load (throttle), creating a big surge in power and exhaust volume. Its actually REALLY COOL and fun, however its anything but NA-Like (if you ask me, and nobody did).

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cooltoy

with everything said.

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bcfromfl

You've got a great memory!

What I meant was kind of a general comment with respect to BOVs and including exhaust systems, too, but if I choose a FI option for my car, it would definitely have to have a quiet BOV...that would be a deal-breaker for me. Some of the noise experiences I've read in this forum would be intolerable.

Also, I've compared many dynos between turbo and s/c Z-cars, and even the best TT systems still have at best a 500rpm disadvantage when torque starts to advance.

Chuck33079

If you rode in a car with the BOVs plumbed back into the intake and the wastegates plumbed into the exhaust, you'd be amazed how little additional noise there is. Turbos make great mufflers.

A sc setup will make its own noises. Centrifugal scs have the same BOV issue, and a pd will have a whine. Granted, blower whine sounds awesome to many (myself included), but whatever FI route you go will have some additional noise.

Back on topic though, if what you're looking for is a flat torque curve and great throttle response, a pd blower is what you're looking for.

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phunk

This Whipple unit doesnt really whine. At wide open you cant hear them.

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Btalont

My interest has been peaked on this since it first came out. I've turbo'd everything from a Pinto(dating myself now) to my Bullitt Mustang (700HP all forged). Have done Mitsubishis and my daily is a turbo Veloster. As MadSciSnails and Chuck 33079 noted, the simplicity of not having to change exhaust manifolds, coolant/oil plumbing and all the other details that come with a turbo install is enticing. Also typically a lot less heat under the hood. I too have noted at the front of this kit announcement my issue with having to change or modify a hood puts me on the fence.

Ape Factory

I think it'll be imperative to have a proper LSD and not the VLSD so budget another $2K on top of everything else. It seems to be so true with this platform, need to pay to play.

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bcfromfl

I just wanted to say that whatever comes of all this, this thread is really bringing up a lot of good points and is a good read, if nothing else!

This is my preference when considering s/c vs. TT. Whenever I look at a dyno sheet, I don't look at the overall numbers, or what is happening on the right side of the graph. I'm looking at the left side, and the linear nature of the torque curve. That extra 500rpms in the 2000-2500 range means everything in terms of response and fun, instead of having to wait more towards 2800-3000.

I would much rather enjoy blipping the throttle at lower rpms and having predictable torque, than a turbo begging higher rpms and a speed that can't legally (or safely) be used in more than a handful of locations. I know lots of guys love this rush, but I fancy a more balanced machine.

zer099

If I recall, back in December when this started rolling there was talk of the system being a modular price structure. I was thinking base price for the necessities (SC kit, Whipple, cogs, IC, and heat exchanger and pump), then add on what you need/want (tune, injectors of choice, fuel pump(s), pulley (still presuming it is trying to be made to work with the ATI), and things like that). Thus, making the price somewhat flexible especially for some that already have some the things in the kit and just need the base kit and their tuner to sit in the car. Now the kit is coming with intakes; 75% of use have those already, I thought the kit was being developed to avoid things like that. Is this still what we are looking at in the end, a modular price point, or more of a $10k stage 1 take it or leave it, $12k (random guess) stage 1.5 take it or leave it, and so on plus the price of a hood?

I realize tone on the internet can be mistaken, and I mean no anger or unhappiness; just since numbers are starting to be thrown around I wanted to understand if this was still on the table.

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bullitt5897

There is often more interest in a turn key solution but if someone wants to provide their own parts a tuner option will be available. The pricing on that won't be cut and dry since people can add or remove parts as needed.

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Shop Cars: 2013 318whp Nismo VspecII 370z *SOLD*, 2009 1000hp+ 93oct 4.0L TT 370z Fast Intentions STAGE 4 #054

jchammond

Don't want to swap my CAI or exhaust...that's why I been following this thread.
I can fab a cowl induction hood scoop.


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