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Discussion Starter · #1 · (Edited)
As some of you know, we’ve been working hard integrating the TVS family of superchargers to 2ZZ Engine and our Lotus. The TVS blower is the new twin vortices blower from Eaton to replace the more archaic technology that most of us are running found in the MP-62. The results are simply fantastic!

These new blowers are VERY efficient and are even exceeding the efficiency envelope of the infamous Lysholm twin-screw! -eek- We’ve been experiencing performance on par and exceeding that of any air-to-air intercooled MP-62 supercharger system on the market with our NON-INTERCOOLED TVS system. The TVS is so efficient that charge temps and parasitic drag drop enough that at just 10psi boost, with a conservative timing map and properly rich AFRs, we’re seeing about 275wheel horse power and 175 wheel torque!:evil: :shift:

Comparing charge temps of our original setup with 10psi on a non-intercooled MP62 Katana base to our non intercooled TVS there is a drop by approximately 60+*F at peak load and full heat soaked conditions and over 100*F lower off load. Temperature recovery is much faster on this blower from my data logs. That means that when not under full load, temps drop faster and the unit cools faster, which mean an even greater *average* drop in temperature from the MP 62. Parasitic drag also drops with this unit. Another interesting note is that it’s whisper quiet as well…:cool:

Ultimately, we were able to get MP62 intercooled performance (better actually) without all the complex plumbing, weight, and throttle lag of the intercooled systems available today (both OEM and aftermarket).

Better news, yet!! This is the upgrade I think we were all waiting for (I certainly was)!:nanner: I worked very hard to ensure that this is a direct bolt on upgrade to the MP-62 based, non-intercooled, supercharger kits available today (BWR and Sector111’s Katana)! That means you won’t have to completely scrap all the hard earned dollars you spent on your first kit, as many of the bits are reused with our new system. You may even be able to sell your original MP62 to help recoup some cost.:D

We machine the TVS blower housing to fit the Lotus 2ZZ on our CNC mill, make custom pulleys, and adapter plates to fit the two manifold systems on the market today, and mill the bracketry from solid billet steel.

I'm obviously very excited about this. If the interest is there, we’ll work with existing vendors to bring this to the market as an upgrade and/or entirely new kit to the market.

TVS Information (from Eaton’s website): The Eaton Twin Vortices Series or Eaton TVS™ is a patented supercharger design that features twin four-lobe rotors, twisted 160 degrees. By comparison, the original Eaton supercharger features three lobes twisted 60 degrees. The fourth lobe and added twist, when combined with redesigned air inlet and outlet ports, creates a smoother, more efficient flow of air into the engine. In addition to improved overall efficiency, the Eaton TVS supercharger has improved noise and vibration characteristics as well. This is the same family of blower found in the new ZR-1 Corvette and CTS-V

The two dynos below are simply in two different scales. One shows the torque curve better and the other has "forced scaling", which how most dynos are posted... The CAD drawing is the alternator and blower support and the others are my engine bay...

Best,

Phil
 

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Discussion Starter · #2 · (Edited)
Here are some data logs along with another dyno pull. Conditions of the pulls are at the top of each sheet. Notice the TVS creates more boost with less heat. And notice the torque curves builds fast and builds longer...



 

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:drool::drool::drool:

You have my attention.
 

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@Phil,
what mod's do you have from OEM?
When I read description in dyno you threw out the cat, have a CA intake and obviously the EFI. More stuff?
In other words, for less modded cars with just Katana or BWR: they might not be able to reach same #'s as you? Although you didn't max out the possibilies yet re timing etc.

Anyway, congrats!! Great innovation (again) you made for Lotus community!!
 

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Phil:
-What is the actual pulley size, is it the stock katana 3.4???
-What else was modded (exhaust, headers, cat, pistons, rods)? I see headers in your pics and decat CAI. I'd like results on an otherwise stock Elise. If I could get 30rwhp with this SC and a retune that'd be great.
-Will the actuator be placed on the proper side of the SC?

Depending on price, and if you get Charlie to tune your kit, count me as very highly/totally interested. I have absolutely no interest in going stand alone though. I hope your relations with Charlie are good because I don't think many would go for your SC option if it means buying/installing/tuning a stand alone kit.

Let me know.
 

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Can't wait to see it this weekend!

Be sure to tell my wife how it improved the mileage!
 

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Well get Charliex tune, unpack all and sold it.
I prefer a little less hp and high affordable than a peak...

So this one doesn't need any intercooler?
 

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Discussion Starter · #13 · (Edited)
I think it's very reasonable to think Charlie would get the same HP as I did out of this system with a CA intake on a lesser modified car. I say this for a few reasons,

- Charlie's probably better at tuning these cars than I am. He has certainly done a lot more of them and pays more attention to the tuning detail than I do.
-I ran my Mp62 timing curve on the TVS, which is lower than what it could have been, which means I left some horse in the stable. All I did was tune fuel.
-I picked no or VERY little increase when I added the headers, that I can tell (they're Weapon R),
- Decat was present for all pulls and surelly worth no less than 5 hp, IMO.

That said, I did find a nice HP increase when I went from the stock air box to a simple KN on the end of a tube (nothing fancy there)... So dedcut points for that and add points for some of the above;)

Darth- The pulley sizing is totally different. Stock Katana runs about 7psi boost. I was running 10psi boost with a 3.2" pulley on the Katana type setup and was also running exactly 10psi with the TVS (see dyno plot descriptions). You see that with all the stuff on my car and Katana tune, I was running more HP than the normal 215ish that many are running. Then I switched to EFI and added a CA intake and jumped to 240ish, then went to TVS.

I'm quite certain this is *atleast* a 45-50whp increase over the base kits... It was more than that for me, but I have a few more goodies like the CA intake and decat...

Best,

Phil
 

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Great news... I was holding off on the group buy for the SuperCharger hoping someone would make one that offered a bigger bang, the first ones didn't seem too offer much over a stock engine setup.
 

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TP-

"-I picked no or VERY little increase when I added the headers, that I can tell (they're Weapon R),"

Just to clarify: Did you do a back-to-back test? Stock headers and a good tune and then just switch headers and retune for them (leaving all else the same)?

Don
 

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Discussion Starter · #17 ·
TP-

"-I picked no or VERY little increase when I added the headers, that I can tell (they're Weapon R),"

Just to clarify: Did you do a back-to-back test? Stock headers and a good tune and then just switch headers and retune for them (leaving all else the same)?

Don
Don, almost. It wasn't the same day. I picked up maybe 3 hp with the headers and decat from just running decat and stock headers... It may be my tuning abilities wasn't able to extract the ponies from them... They do look pretty though:eek:

Best,

Phil
 

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This sounds awesome! A question from someone who still has a stock Elise ( :( ) and is fairly ignorant about this: Are you offering a new blower and bracket or is there something else I'm missing? I would have to purchase a full SC kit from someone else first, yes?

Just asking. Not trying to imply anything (you know how internet posts go).
 

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Great news... I was holding off on the group buy for the SuperCharger hoping someone would make one that offered a bigger bang, the first ones didn't seem too offer much over a stock engine setup.


The "first ones" do offer much over a stock engine. You can drive mine when it's finished and see for yourself -poke- But this is going to blow them away. You'll be seeing turbocharger-like power :p




Put me on the list of buyers!!!!
 
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