Kraftwerks Supercharger Owners Thread

[sw20kosh]

Originally Posted by dren

The check valve is a few inches after the bend towards the engine. It is about an inch long.

And now that I think about it, the check valve just makes sure you have power brakes if the engine dies when driving. It's a safety feature. I'll definitely get a replacement.

I ran without a check valve for a bit. It doesn't affect your driving unless you are driving spiritedly or on the track. Quick transitions from WOT to brakes will reveal a super hard brake pedal which will get softer after the cylinder fills with vacuum again. Def get a check valve if you do this type of driving.

I couldn't find any the right size and the hose from subaru was over $100 so I found this from another thread on here. It works perfectly and is cheap as hell:

http://www.usplastic.com/catalog/ite...rtnumber=64175

64175 is the part number. I bought a bunch.

[dren]

Originally Posted by sw20kosh

I ran without a check valve for a bit. It doesn't affect your driving unless you are driving spiritedly or on the track. Quick transitions from WOT to brakes will reveal a super hard brake pedal which will get softer after the cylinder fills with vacuum again. Def get a check valve if you do this type of driving.

I couldn't find any the right size and the hose from subaru was over $100 so I found this from another thread on here. It works perfectly and is cheap as hell:

http://www.usplastic.com/catalog/ite...rtnumber=64175

64175 is the part number. I bought a bunch.

I ordered the replacement hose from Subaru online store and it was $24. I'll receive it tomorrow so I'll let you know if it's the right part...

[dren]

Originally Posted by digital_assassin

Glad your up and running Dren! Are you going to have a dyno pull done to see where things are at?

I am not going to have a dyno pull, but since it is stock and I am running the below tune for stock, it should be this:

[cobrabyte]

I'm still waiting on injectors, oil cooler and some other bits to show up before tackling the install. I only want to pull the bumper once.

[sw20kosh]

Originally Posted by dren

I am not going to have a dyno pull, but since it is stock and I am running the below tune for stock, it should be this:

Here is unbiased 3rd party dynojet of the kit with a header:

[sw20kosh]

Originally Posted by Ralph Spoilsport

E85?

No, neither this graph nor the graph I posted in last page were E85. They were pump fuel.

Kraftwerks released an E85 graph that showed ~350 whp I believe.

[Ralph Spoilsport]

Originally Posted by sw20kosh

No, neither this graph nor the graph I posted in last page were E85. They were pump fuel.

Kraftwerks released an E85 graph that showed ~350 whp I believe.

Me confused. Okay, there's this http://cms.kraftwerksusa.com/id/954/...-Dyno-Updates/ 338 HP E85, header, etc. (fuel upgrades, one would suspect, but not listed...) vs 157 HP baseline stock.

Looking forward to seeing others results. It does seem a little ahhhhh, optimistic.

[digital_assassin]

Originally Posted by sw20kosh

Here is unbiased 3rd party dynojet of the kit with a header:

This is my car and I have stock headers.

[Ralph Spoilsport]

Originally Posted by digital_assassin

This is my car and I have stock headers.

Thanks for clarifying. I like your numbers and this kit.

[dren]

From what I have seen here and the Delicious Tuning 91 octane on a stock car graph I posted (and tune I am using) this kit does produce good numbers. 100+ hp at peak over stock at the wheels. If you back calculate assuming 22% losses (based this on the 200hp motor rating and 157hp at the wheels) the motor is making around 340-350hp.

[digital_assassin]

Originally Posted by Ralph Spoilsport

Thanks for clarifying. I like your numbers and this kit.

This is a conservative tune on winter gas so numbers should change in the summer. On both the KW kit and the JR kit Bob kept our Rev Limiter at 7,400 and I can't recall for sure if this could be raised with higher flowing injectors and fuel pump or not, but I recall him saying he was having issues getting enough fuel.

[sw20kosh]

Originally Posted by digital_assassin

This is a conservative tune on winter gas so numbers should change in the summer. On both the KW kit and the JR kit Bob kept our Rev Limiter at 7,400 and I can't recall for sure if this could be raised with higher flowing injectors and fuel pump or not, but I recall him saying he was having issues getting enough fuel.

If you look at your graph, it would make no sense to raise the limiter.

[digital_assassin]

I've been testing the toothed pulleys on the kit with Kraftwerks and the results are very good. Here is a video of the kit with toothed pulleys at idle. Pretty big difference. I close the hood at the last part of the video and it's barely detectable when idling. When you get on it the whine is there though. Sounds great now! A finalized version will be going into production and will be on the streets soon.

[ame="http://youtu.be/JoqCUIKY3D8"]http://youtu.be/JoqCUIKY3D8[/ame]

[CSG Mike]

Originally Posted by digital_assassin

This is a conservative tune on winter gas so numbers should change in the summer. On both the KW kit and the JR kit Bob kept our Rev Limiter at 7,400 and I can't recall for sure if this could be raised with higher flowing injectors and fuel pump or not, but I recall him saying he was having issues getting enough fuel.

You'll need more fuel pressure to make more power; that's fairly easy. The larger concern, IMO, is how weak the valve springs are; I'm personally against raising the redline without some headwork.