Kraftwerks Supercharger Owners Thread

[rj101592]

I've been looking around a lot and seeing a lot of different things.. I am torn between going with the kraftwerks and the JRSC kit.. The biggest factor is which one is making more power? both seem to be reliable so now it comes down to which one makes more. It seems as though the kraftwerks is making more (I keep seeing around 250 whp) I am bone stock just looking to add the SC for now and getting around 250-260 to the wheels.

[zoth]

Originally Posted by rj101592

I've been looking around a lot and seeing a lot of different things.. I am torn between going with the kraftwerks and the JRSC kit.. The biggest factor is which one is making more power? both seem to be reliable so now it comes down to which one makes more. It seems as though the kraftwerks is making more (I keep seeing around 250 whp) I am bone stock just looking to add the SC for now and getting around 250-260 to the wheels.

your goal will be easy with both setup... of course I will recommend @KraftWerks for it done well for me so far. Bone stock with injectors you'll get more WHP with E85 tune/flex-tune.

[NightRaid]

What numbers will I achieve with just a C38 upgraded KW kit on stock fuel system and a overpipe + catback setup? Will be running 93 Oct.

[captain_jack]

Originally Posted by rj101592

I've been looking around a lot and seeing a lot of different things.. I am torn between going with the kraftwerks and the JRSC kit.. The biggest factor is which one is making more power? both seem to be reliable so now it comes down to which one makes more. It seems as though the kraftwerks is making more (I keep seeing around 250 whp) I am bone stock just looking to add the SC for now and getting around 250-260 to the wheels.

I have a dyno that shows a Jackson and a kraftwerks with the Same mods same tuner and on the Same dyno. Kraftwerks makes more. And i happen to have a very good deal on a kit, new blower with flex fuel kit and engine oil cooler if your interested.

[rj101592]

I would be interested.. I would need a little time to get the money together but if that is ok with you then I am all ears. Just shoot me a PM.

Originally Posted by captain_jack

I have a dyno that shows a Jackson and a kraftwerks with the Same mods same tuner and on the Same dyno. Kraftwerks makes more. And i happen to have a very good deal on a kit, new blower with flex fuel kit and engine oil cooler if your interested.

[KraftWerks]

Originally Posted by NightRaid

What numbers will I achieve with just a C38 upgraded KW kit on stock fuel system and a overpipe + catback setup? Will be running 93 Oct.

Giving an actually number is tough seeing that each dyno reads a bit differently and your actual location with regards to elevation and conditions is going to come into play as well.

Similar setups have hit around north of 300+whp. Similar numbers should fall into place for you as well especially with the over-pipe and slightly better fuel. You could potentially see 320 or so. Again, this depends on the dyno and your overall location and conditions.

[djliquidsteele]

Originally Posted by KraftWerks

Giving an actually number is tough seeing that each dyno reads a bit differently and your actual location with regards to elevation and conditions is going to come into play as well.

Similar setups have hit around north of 300+whp. Similar numbers should fall into place for you as well especially with the over-pipe and slightly better fuel. You could potentially see 320 or so. Again, this depends on the dyno and your overall location and conditions.

Would there be any appreciable gains seen by upgrading the fuel system but still on 93? Also, if running E85, are the fuel system upgrades necessary? Lastly, and I'm sure this is tuner dependent, but would flex fuel be a feasible option with the c38?

Thanks!

[NightRaid]

Originally Posted by KraftWerks

Giving an actually number is tough seeing that each dyno reads a bit differently and your actual location with regards to elevation and conditions is going to come into play as well.

Similar setups have hit around north of 300+whp. Similar numbers should fall into place for you as well especially with the over-pipe and slightly better fuel. You could potentially see 320 or so. Again, this depends on the dyno and your overall location and conditions.

Is it safe to run the C38 blower with stock fuel system?

[nlowell]

Update on my oil cooler - Kraftwerks made it right and shipped me some new AN fittings and O-rings. They seemed to install with a tighter fit than the original. After some inspection, the new AN fittings have a much wider seat that I'm sure helps the seal. Here's to hoping for no oil leaks at buttonwillow Saturday...

[nlowell]

Originally Posted by NightRaid

Is it safe to run the C38 blower with stock fuel system?

I'm guessing the C38 would max out stock injectors on 91. Stock injectors max out at ~300hp. If the tune was adjusted right then I'm sure it could be safe but you'd be losing available power on the top end.

[nlowell]

Originally Posted by djliquidsteele

Would there be any appreciable gains seen by upgrading the fuel system but still on 93? Also, if running E85, are the fuel system upgrades necessary? Lastly, and I'm sure this is tuner dependent, but would flex fuel be a feasible option with the c38?

Thanks!

The injectors are the first to max out and should be ok on 93 with the c30. I maxed out my injectors on e85 with my c30 at ~6,700 RPM and had to upgrade to get the most out of the c30.

Running e85, upgraded injectors are definitely recommended but theoretically a tuner can adjust it so that you don't need the upgrade (but you will not be getting the most out of your system). Bill @DeliciousTuning adjusted mine until I had my new injectors installed. New injectors, e85, and the C30 with a custom tune I put down 365hp to the wheels.

Flex fuel will definitely work as long as your tune is adjusting for it. Bill is coming out with a pretty sweet plug-n-play kit pretty soon (he just had a new baby).

[KraftWerks]

Originally Posted by djliquidsteele

Would there be any appreciable gains seen by upgrading the fuel system but still on 93? Also, if running E85, are the fuel system upgrades necessary? Lastly, and I'm sure this is tuner dependent, but would flex fuel be a feasible option with the c38?

Thanks!

You might see gains although the pump type fuel is still limited when making power as you won't be able to adjust timing and cam angles enough to make the peak power without worrying about knock.

E85 does not REQUIRE the upgrades although you do use more of it compared to pump fuel thus upgrades are certainly recommended.

E85 should max the OE injectors (non-direct) out around 300whp depending on the dyno,etc. Pump 91/93 should put you around 330-340 although you would be fighting knock at that HP level since the fuel wouldn't be able to allow for those angles and timing as mentioned above.

[KraftWerks]

Originally Posted by NightRaid

Is it safe to run the C38 blower with stock fuel system?

The stock fuel system as a whole is not a restriction.
The direct injection system works very well when utilized properly.

The limitations become the OE Injectors and OE Fuel Pump (non-direct).

At the very least, to remain completely safe, the upgrade to the Grams 550cc Injectors or similar would be recommended for the C38 to utilize the kit to its potential. An upgraded fuel pump should be on the future mod list as well.

[nlowell]

This SC on e85 is a beast! I was just on my way up to Buttonwillow for a track day tomorrow. Cruise control was enabled at 75mph and sport mode was off (it's an AT). I just touched the accelerator to pass someone (maybe 1/2 way) - the car downshifted twice to 4th gear and my back end kicks out. Mind you this is on new RS3s. Eek and wow both at the same time I might have to upgrade my wheels to something much wider sooner than I thought...