Sorry to hear that Spawn, judging from some of the posts they made about it being more of a cool factor I was worried the power wouldn't be that great. For the meantime you'll be the only twin supercharged system out there, and hopefully GTM can get the numbers better or you'll be the only twin supercharged system out there.

Good luck to both parties involved, this is a step in the right direction and someone has to lead the way in this new design. It's not always pretty at first but I'm sure they'll do their best to make it right!

Hmmmmm. That is surprising, but in some ways not. Twin centrifugal SCs do not overcome the low RPM boost problem as easily as twin turbos since the centrifugal SC still needs peak RPM to make peak boost, with a fairly linear boost curve from start to finish. You are making more WTQ at that WHP level than most of the single SC setups out there, and the GTM guys are not done with it yet. Here's hoping they can squeeze a bit more out of it. But, hey, at the end of the day, you still have one of the most unique FI setups out there right now. :tup:

I'll OTE=elperuano;1916123]Sorrysalt o hear that Spawn, judging from the posts they made about it being me of a cool factor I was worried the power wouldn't be that great. For the meantime you'll be the only twin supercharged system out there, and hopefully GTM can get the numbers better or you'll be the only twin supercharged system out there.

Good luck to both parties involved, this is a step in the right direction and someone has to lead the way in this new design. It's not always pretty at first but I'm sure they'll do their best to make it right![/QUOTE]

I just got off the phone with Sam and got some clarity. It is at 480hp now and about 360tq. However, that is on 91gas. He thinks he has a way to get the smaller pulleys and on Meth it should be over 700bhp. I'd be totally happy with that. I will post more as I know more.

I just got off the phone with Sam and got some clarity. It is at 480hp now and about 360tq. However, that is on 91gas. He thinks he has a way to get the smaller pulleys and on Meth it should be over 700bhp. I'd be totally happy with that. I will post more as I know more.[/QUOTE]

that must be one hell of a pulley to jump that much HP

A little clarification. The car made 480whp, 360wtq on the first pull. In my opinion this is very good results for a new system on 91 octane and on a simple base map. Keep in mind that the ultimate goal right now is to stabilize the car and make sure that everything is functioning correctly. The system is far from done. So far all we have is about 7 - 9 dyno pulls since we are looking into VVEL lift variation between bank 1 and bank 2. This VVEL issue is definitely separate from the Twin Supercharger as the system is very unobtrusive and the VVEL system is not touched during installation. Also, having a VVEL code means that the engine is not running properly and is not ingesting air like should.

Right now, our main focus is ensuring that the system works properly and that this VVEL code is resolved. Once that is taken care of, we will be working on getting the power and torque. For now, that is not our primary concern.

Sam

rome wasnt built in a day lol system sounds awesome i watched the youtube vids last night. keep up the good work. i'm excited to see what kind of future results you guys get. :tup:

Even though you very clearly stated "700 BHP", it's probably safer to talk in WHP numbers around these parts to avoid any confusion.

I'll speak inOTE=Nixlimited;1916519]Even though you very clearly stated "700 BHP", it's probably safer to talk in WHP numbers around these parts to avoid any confusion.[/QUOTE]

Sorry about that. I am focused on BHP since my brother got the new GT500 and has 650bhp (supposedly). I will speak in whp from here on out.

No worries. Your brother's car is a cool one. Very fast in a straight line. I would not expect to compete well with that in a straight-line given its huge torque numbers. Anyway, raw numbers don't matter much. If you can get yours down/around the track faster, you win!

Update:

After spending the majority of the day checking the entire system for the cam timing issue, checking engine oil pressure all the way to pinout testing of the ECM. The only thing left in the system is the valve control solenoid. Everything is pointing to a failure in this component. Unfortunately, this solenoid is located behind the main supercharger bracket and will require the complete removal of both brackets to get to it. Below are a couple snapshots of what is happening with the solenoid. The one that is labeled "No Good" is the car we're working on. Notice how bank 2 solenoid voltage is flat lining vs. the "Good" one that is from a properly working car for comparison.

Once we get this resolved, we will continue with the tuning.

Sam

Bummer! :(

hehe what fun would it be to build a kit from scratch and not run into a few bumps along the way

Hows it coming get the problem fixed?

Update:

When the car threw the cam timing codes, we contacted the owner to advise him of the situation. While we had completed the system and the car was running on time per the owner's requested time frame, the car did have an issue that needed to be resolved. The owner decided to have us put the car back to stock instead of diagnosing and solving the issue to get the car running properly. Therefore, the results are on hold for the time being.

The good news is that we are 60% done restoring the car back to stock and we have another car ready and available to get this system installed. So, our press release should happen sometime next week.

Sam

Wow really back to stock? That's the most anti climatic ending this coulda had :(

Wow, bummer!

I want to know what made homeboy change his mine when the kit is practically installed, and then to have a Engine problem which could of been resolved. However things may have boiled down to resources $$$$$$ Who knows.....that Sucks!

well if he wants a shot at getting a new engine under warranty, the car can't just go in with 2 SCs hanging on it

Damn that sucks. So did OP get charged for any of this? He basically paid to have a twin charger on the car and then take it off before ever even driving it? I guess in the end it still worked out for Gtm! Wonder what changed the OP mind

Why does he need a new engine?

The car will be leaving in the same condition it arrived in...it didn't come in with a blown engine, and it won't be leaving with one either.

We called the owner on the Friday we did the forum update to let him know what we have to do to solve the code issue. Everything was fine on the phone, then the following Monday morning, the customer e-mailed us and said he would like to go back to stock and our reply was "sure, no problem".

The way we look at the situation is this: the GTM Twin Supercharger Kit is a really awesome product and we really want the first person that gets it installed to really want it. Plain and simple.

-Mike

I was really looking forward to seeing this kit, and I also hope they do their next install on an AT. As this kit was supposedly developed for AWD and other g37 Platform and 370z platform.

Well i was referring to getting it covered under warranty at a dealership. But if the repair requires disassembly of the engine itself, they will probably just warranty for a new long block

Time to find the first dedicated 370z owner in line and drop it in that bad boy see how the z looks with this kit. We all want more power in the end no matter what we drive

Plenty of dedicated people. The money is most peoples problem lol. If money wasn't an issue they could keep my car for an entire year for all I care.

They currently have my car for this install. Should really see some headway towards the end of the month.

Don't get so butt hurt brother... It's the Internet! :tup:


I'm sure the engine took a hell of a beating with that amount of boost and R&D done on it




If you want a CA car to work on, you can have my 370Z, 7AT to test on...

Point blank: I won't pay you anything until it works though

(I believe the owner of this car had an ongoing rant with you, not looking to have one of those, hence the non payment until the car works, lol)

I really don't know why money is an issue... Most R&D builds warrant a free kit to the R&D car IMO...

Oh, also,
@GTM:
Why don't you just buy a used motor and experiment from there???

OP Shoot me a price. I am also in Cali. How much for kit and how much Installed?

Again, my vehicle is with GTM having this installed :) I have details in my sig link (omitted any $$$ info). Kit runs about $10k without install, it's on their site as well. Big reason I wanted this kit is because it clears long tube headers, anything above stage 1.5 supposedly had clearance issues.

10k??????

Our cars are shop buddies. :tiphat:

That shouldn't really be that surprising, there are two superchargers after all.

Yea and there are 2 turbos in a twin kit and a big stage 2 kit for that is only 7-7500 depending on options.

What he said.

Low volume = higher cost. GTM will probably sell 10 of these total. It really is a solution looking for a problem.

The problem it fixed was AWD auto G37's having little to no options for FI. They just released a TT kit for them as well. It isn't a high volume kit. They are made to order. There was a lot of fabrication and design to get it to market, the superchargers cost a couple thousand each, and the mounting brackets holding the superchargers and pulleys are expensive to manufacturer and low volume.

Hey Firehawk, can you post a video when you get your car back, or one from GTM, when you do the test drive. We all are super curious. Thanks!

There will be updates as I get them. My test drive won't be till August unfortunately, out of the country...so I'll see what I can do in the interim.