Agreed. The power differences look pretty close to me, and will be even more similar once GTM dynos with an aftermarket cat-back.

The difference is $900, right? That's fairly significant, IMO. Could be put towards a couple additional supporting mods like an oil cooler, clutch, flywheel, gauges, bigger/stickier rear tires, or maybe some suspension upgrades.

and really, have you ever heard of anyone who went forced induction and kept the stock exhaust?

CARB people :roflpuke2:

which is why GTM did thiers that way, now we need a new dyno with CBE

CBE+LTH+GTM supercharger tuned=500whp and that gentlemen is fkin awesome!

Don't need a CARB expemtion order for cat-back-exhaust. You do need them for hi flow cats and headers though.

Another side note: CBE exhaust are only good for about 5hp based on dozens of before and after dyno results. An yeah, I get that a SC engine will flow more exhaust and be more restrictive, but it's going to be how much, 7hp difference?

Another side note: There's no way to know which kit is making more power without running them back to back on the same dyno. I have seen as much as 40hp difference in readings on my own car based on temp, alt and dyno manufacturer differences. One of my dyno guys says you can tinker with the settings to get the dyno to read higher or lower as well.

Nearly stock torque #'s at low rpm is typical for centrifugal supercahrgers. The faster you spin them, the more boost they make. Positive displacement superchargers, on the other hand, reach maximum boost at roughly 1/3rd of maximum operating speed, meaning you have full boost at 2,500 engine rpm.

The torque curve that the GTM kit makes looks typical for a positive displacement supercharger and I'm amazed that they are getting that out of a centrifugal charger.

Oh I'm aware of the TQ characteristics with a Centrifugal SC, but was just shocked to see such results from the GTM. Personally, I think the low end TQ would be more fun to have. I mean top end HP is great and all but when you are already at 400+ HP what's another 20 over some serious TQ 500-1000 RPM sooner in the powerband. Thats just my opinion though.

It's unfortunate though that the Dyno for the GTM and STILLEN do not start at the same RPMs. One starts at roughly 3k and the other at 3.5k.

If they both started at 3k that would make for a great comparison.

Edit- Comparison in positive gains not in overall peak number. Different dynos etc but they both did baselines so a overall gain can be determined.

A CBE is more like 15 hp on a stock engine, atleast thats what FIs and Berks and allo them dynos show. HFCs installed after a CBE is about 5 hp.

agree about the dyno, Ive been trying to get an answer on what dyno GTM used.

The torque curve of the GTM kit is great. I want to know how the torque curve changes, if at all, with the other stages.

GTM uses a dynojet, I believe.

This isn't directed to anyone in particular, but these dyno comparisons are getting silly. There are simply too many variables involved when comparing dyno numbers. Correction factors, boost pressure, ambient temps, baro pressures are just a few of the factors involved. Not to mention, the two kits have entirely different tunes and are on entirely different sides of the country. To accurately compare the two, they need to be installed on bone stock cars, same types of transmission, same dyno, same conditions.

Agree for the most part, except both companies are in Southern CA.

Yup. I live like 5 min. away from Stillen.

I'm about 15 :p

Gosh dangit, for some reason I had AAM's location in my mind, on the East coast. I'll take my licks for that one :icon17:

What will the price be for the stage 1 kit after the introductory price ends?
 

I have seen the question asked atleast six times and still have not seen an answer yet, or may be I just read over it. I will ask it again: How long will the introductory price last? What will the price be for the stage 1 kit after the introductory price ends? Thanks

Sorry about that. and the answer is to to the end of the month .

Sam

Just need to finish few things on the dyno and will be here to answer them all, including your other thread.

Sam

Sam, have you guys decided what the price for the stage 1 is going to be set at after the introductory price ends? Thanks

DynoJet...and they are located near Ontario, CA.

:tup:

I got 13rwhp with Invidia CBE on a DynoDynamics dyno.

Anyways, i had Stillen S/C on my old 350z, and i didn't like their crappy RC 7th injector and their control box that required some wires to be cut and solderned to the ECU harness, what i really like about GTM kit is that they made it the way people like it, and you get your own ECU reflashed and tuned for it, which is much better than having a piggyback unit.
The price so far is not that much between the 2 kits, but i heared that Stillen price is for pre-orders only, after release the price well be around $6700, that's what i've been reading on the other thread.

But anyways, in a matter of few months we'll see both kits on the same car on the same dyno for comparsion, it's too early to say this better than that, so far all we know now is the price.

When Stillen and Vortech released their kits, there was no Cobb or other flash devices available. I'm not sure Technosquare at the time had enough control of the ECU and that would have been an imperfect solution anyway with people shipping their ECU back and forth 10 times to get a tune right. If GTM was releasing a kit in early 2004, they would have traveled the same road.

Both kits have pre-order pricing and will supposedly rise. Of course ultimately supply and demand will dictate pricing. If there is no demand at $6700, the kit will either disappear or come down in price.

Sam my money has been sent. wooot. me so happy

do you know how much the install is going to cost you?

they are going to include an installation dvd, so if you are brave you could install it yourself. I'll probably go that route when I get around to getting this kit.

How hard can it be?

Famous last words...

na mister zuma will get this done. He has the skills

He prolly talks to his Z at night...


"I can rebuild you... I have the technology. I can make you better, faster, stronger!"

Actually it's the other way around ......... I hear voices and it's coming from the garage! :eek:

Now if I can only figure out what it's trying to tell me :p

it says : give shumby your car

Haha, if he were self installing a twin turbo kit, I would agree. Any supercharger kit installation should be pretty straight forward.

Hi guys,
I think that intro price is crazy - You can make a car run close to GTR-type levels with a fraction of the total cost! My question as a noob is: should I go with a Supercharger or a Twin Turbo if I want to make the car more powerful all-around. I know there are some advantages/disadvantages to each, but at $5K, a Supercharger is hard to beat if it's the best upgrade option, right?

Any thoughts

Can Sam offer a quick expert opinion as well?

The twin turbo systems available for the 370Z have far more hp potential than a supercharger setup. For stock block guys wanting ~400whp though, a supercharger is a really great option.

From the position of the supercharger, I was wondering how much dirt and debre it will be exposed too.

Would this affect the life and usage of the supercharger?

Those who daily drive their cars will probably have this on their minds because at least here in Chicago we still use salt to melt snow and we all know how bad salt is.

If you really have to ask that question ... instead of learning your own opinion... you should probably invest in a performance driving school first... I am sure the Z has much more get up and go than 99% of us need (read: not want but need lol)..