power loss from 12 bolt
04-01-2006, 09:54 PM
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power loss from 12 bolt Well my car put down 333hp and 339tq. After the 12bolt it put down 328hp and 334tq so it lost about 5hp and tq.
What sucked was that it was very lean. Around 13.6:1. Any ideas on what it could be? We swapped out the maf and that wasn't it.
What sucked was that it was very lean. Around 13.6:1. Any ideas on what it could be? We swapped out the maf and that wasn't it.
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04-03-2006, 06:19 PM
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Originally Posted by chupr0kabra
Did you change gear ratios?
-Mike
-Mike
04-05-2006, 10:24 PM
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Actually, 13.6 is not lean at all, the ideal AFR is about 14.7:1 for fuel economy. But My Hot Rod U instructor said maximum power is achieved at 13.0:1. You probably could richen it up a tad bit. as far as the 5 HP loss I could see that because the ring gear is beefier as well as the axles giving You a little more rotational mass. Plus 5 HP isn't ****, You wont even notice it while driving.