new Kraftwerks kit OWNER!
Joined: May 2010
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Originally Posted by leoxle' timestamp='1405575796' post='23247487
This is why I passed up on the Kraftwerks kit and went with SOS. I wanted the ability to expand, not be stuck with the power level right out the box. Kraftwerks said you can up the boost with smaller pulleys, but you have to lower redline and no one wants to do that.
.- thats why i go with kraftwerks!I don't the issue with the KW kit is that its at its limit but the fact their intercooler core is huge and probably not very efficient. I spoke to LHT Performance and said I was interested in the KW kit but running my precision intercooler and John immediately said the KW intercooler is huge compared to the precision. More space equals more space to fill. The KW kit is spinning the c38 to 87,857 rpm (under the 90,000 rpm limit from Rotrex) but only seeing 11psi at the throttle body. If you look at 06S2k07Si dyno in his build thread, he is making 11psi with a restrictor in the inlet of the blower. I don't think Kraftwerks uses a restrictor or anything to limit boost. In my mind (unless I'm wrong about the restrictor) the intercooler or piping is limiting the kit to only making 11psi. Could also be that he is using the larger c38-92 over the 81 with the Kraftwerks kit.
Joined: Sep 2005
Posts: 1,941
Likes: 47
From: Baraboo, WI
Originally Posted by Nik2k
thanks brutha!! now im looking what exhaust go... i have js racing header nvidia testpip 70mm, Im between JS racing 70RR SINGLE OR 70RS DUAL.I dont know what to choose..... 
Joined: Sep 2005
Posts: 1,941
Likes: 47
From: Baraboo, WI
Originally Posted by Redline S2K
Thats very surprising. I sent Chris an email yesterday at 3:01pm (1:01 AZ time) and got a response at 3:10. Sent a second at 3:17 and got a response at 6:15.
I don't the issue with the KW kit is that its at its limit but the fact their intercooler core is huge and probably not very efficient. I spoke to LHT Performance and said I was interested in the KW kit but running my precision intercooler and John immediately said the KW intercooler is huge compared to the precision. More space equals more space to fill. The KW kit is spinning the c38 to 87,857 rpm (under the 90,000 rpm limit from Rotrex) but only seeing 11psi at the throttle body. If you look at 06S2k07Si dyno in his build thread, he is making 11psi with a restrictor in the inlet of the blower. I don't think Kraftwerks uses a restrictor or anything to limit boost. In my mind (unless I'm wrong about the restrictor) the intercooler or piping is limiting the kit to only making 11psi. Could also be that he is using the larger c38-92 over the 81 with the Kraftwerks kit.
I don't the issue with the KW kit is that its at its limit but the fact their intercooler core is huge and probably not very efficient. I spoke to LHT Performance and said I was interested in the KW kit but running my precision intercooler and John immediately said the KW intercooler is huge compared to the precision. More space equals more space to fill. The KW kit is spinning the c38 to 87,857 rpm (under the 90,000 rpm limit from Rotrex) but only seeing 11psi at the throttle body. If you look at 06S2k07Si dyno in his build thread, he is making 11psi with a restrictor in the inlet of the blower. I don't think Kraftwerks uses a restrictor or anything to limit boost. In my mind (unless I'm wrong about the restrictor) the intercooler or piping is limiting the kit to only making 11psi. Could also be that he is using the larger c38-92 over the 81 with the Kraftwerks kit.
Joined: Sep 2005
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From: Baraboo, WI
Originally Posted by Redline S2K
My mistake. What was PSI without the restrictor?
Wasn't really a mistake... The dyno's equipment read 11 on the 9.8 MAP. It was reading about 1.1 psi higher than the MAP sensor.
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Joined: Mar 2013
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From: Cordoba
Originally Posted by Nik2k
thanks brutha!! now im looking what exhaust go... i have js racing header nvidia testpip 70mm, Im between JS racing 70RR SINGLE OR 70RS DUAL.I dont know what to choose.....
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Joined: Mar 2013
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From: Cordoba
