Vishnu/Vortech SC development

[Shiv@Openflash]

Hi guys,
The extra induction growl you hear at ~4000rpm is just from VVT mapping. Once the OFH is installed, VVT mapping changes and that goes away. But even with that noise there, it's pretty subtle. Seems like it's just amplified from being indoors in the video.

Also, I don't expect much extra power running the 3.0" exhaust over the 2.5". Just a bit more exhaust volume. I'd say we would have to be making another 50hp before I'd expect to see any exhaust restriction worth mentioning.

Lastly, I should have pricing later today.

Cheers
shiv

PS. Pics of our OFH are on our Facebook page and on our website

[bee_are_zee]

Shiv, not sure if this is the best place to ask but here it goes. How would you describe this setup to the ESC for normal street driving. I understand they provide fairly different power curves, but you are one of few people who has had a good amount of seat time with both set ups.


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[Shiv@Openflash]

Originally Posted by bee_are_zee

Shiv, not sure if this is the best place to ask but here it goes. How would you describe this setup to the ESC for normal street driving. I understand they provide fairly different power curves, but you are one of few people who has had a good amount of seat time with both set ups.


Sent from my iPhone using Tapatalk

Two different beasts. Both have very distinct pros and cons. Once I find the time, I'll do a comprehensive write up comparing the two.

Cliff notes: If you want something that can be installed/uninstalled quickly, there is nothing better than the Phantom SC. Once the battery packs are installed, you can literally remove the SC in minutes for dealership visits or, in my case, NA map development/testing. On the dyno, it also provides more torque up to 4500rpm which makes for better top gear highway passing performance (less need to downshift). Being an electric supercharger (not belt driven), you will also see better fuel economy which isn't trivial.

The Vortech kit, on the other hand, will get a a bit less mpg, give you slightly more whirring noise under the hood (I kinda like it). And while it won't give you as much torque on the dyno in the low end, the torque it does give you is IMMEDIATE. Whereas the ESC needs to spool up from rest, the SC is always spinning with the engine. So when the foot goes down, the bypass valve closes and you immediately have boost. This difference alone makes the two feel comparable in the low end. One gives more torque but is lagger. The other gives you less but is immediate. End result is about the same level of performance but with the SC feeling more natural and coherent (just like a larger engine) vs feeling like a smaller engine with an on-demand power adder.

Above 4500rpm, no comparison. SC wins hands down. It's definitely more satisfying. Not just in power but also response and power delivery and controllability. It's not an on/off switch like the ESC. And it makes peak power above 7000rpm which makes it feel and sound like a race car. When driving, you get into a groove of shifting, WOT, shifting, WOT, etc,. and it's very very satisfying in that it feels like a bigger, higher revving engine. No surges or any indication that it's boosted other than the sound of the bypass valve relieving pressure from time to time. Definitely a better driver's tool.

But the ESC is A LOT more affordable, especially when you factor in installation cost. Which in itself, is enough reason for many people to consider it. I suspect you will find more people going with the ESC first and then swapping over to an SC later once they get the taste of boost. I don't foresee people going the other way around. We have the Phantom kit on our shop car and I enjoy it very much. For less than $2k you pick up heaps of torque and ~40whp gains. But I'd be lying if it didn't say I wouldn't go with the SC if it was logistically feasible for us at this time. We are still developing NA maps and can't exactly install/uninstall the Vortech kit as needed.

[Cross]

Originally Posted by shiv@vishnu

Hi guys,
The extra induction growl you hear at ~4000rpm is just from VVT mapping. Once the OFH is installed, VVT mapping changes and that goes away. But even with that noise there, it's pretty subtle. Seems like it's just amplified from being indoors in the video.

Also, I don't expect much extra power running the 3.0" exhaust over the 2.5". Just a bit more exhaust volume. I'd say we would have to be making another 50hp before I'd expect to see any exhaust restriction worth mentioning.

Lastly, I should have pricing later today.

Cheers
shiv

PS. Pics of our OFH are on our Facebook page and on our website

Is it later yet?

[raven1231]

Originally Posted by Cross

Is it later yet?

Reminds me of kids asking are we there yet on road trip lol

[Cross]

Originally Posted by raven1231

Reminds me of kids asking are we there yet on road trip lol

How about now?

DAD SHES TOUCHING ME!!!!!!!!!!!!!!!!!!!!!!

[Malt]

Originally Posted by bee_are_zee

Shiv, not sure if this is the best place to ask but here it goes. How would you describe this setup to the ESC for normal street driving. I understand they provide fairly different power curves, but you are one of few people who has had a good amount of seat time with both set ups.


Sent from my iPhone using Tapatalk

Better yet, when can we expect a compound charging tune for a combo of the ESC and Vortec (just kidding.... or am I?!)

[Cross]

Originally Posted by Malt

Better yet, when can we expect a compound charging tune for a combo of the ESC and Vortec (just kidding.... or am I?!)

Whatever happened with the ESC?

[raven1231]

Originally Posted by Cross

Whatever happened with the ESC?

Shiv said next week hopefully! It's what I'm waiting for got mine sitting in the box

[kiichiro]

Shiv

Indian to Indian I will come by and offer you my Amex to go buck wild on but I need to know you're committed to my results

Last we spoke three months ago and you weren't ready for what mike and I at vortech have done to my car

Are you ready now?
Meth
E85
Race kit oil fed sc 11.5psi
Race gas

Have money to burn can't find a tuner worth my dime

[Cross]

...So... we there yet?

[krulux]

Originally Posted by kiichiro

Shiv

Indian to Indian I will come by and offer you my Amex to go buck wild on but I need to know you're committed to my results

Last we spoke three months ago and you weren't ready for what mike and I at vortech have done to my car

Are you ready now?
Meth
E85
Race kit oil fed sc 11.5psi
Race gas

Have money to burn can't find a tuner worth my dime

Please don't get Shiv strung-out on Meth. We need him.

[AdrianG]

@kiichiro I think your setup really suits speed density tuning, which the OFT can't do.

- AdrianG

[Cross]

Originally Posted by AdrianG

@kiichiro I think your setup really suits speed density tuning, which the OFT can't do.

- AdrianG

I would have to agree it will be pushing the limits. But in the same light Shiv could most likely pull it off.

If he cannot have you talked to Delicious Tuning or @moto-mike?