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      11-10-2012, 11:41 AM   #15
benzy89
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Drives: '08 E90 335i
Join Date: Jan 2012
Location: Northern NJ

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2008 BMW 335i  [3.75]
Quote:
Originally Posted by erm324 View Post
The main difference between Joe@Trinity's car and this one is simply the gas. So your telling me the 80whp+ difference is due to race gas \
Here's the info from the thread (http://www.m3post.com/forums/showthread.php?t=757888) and it adds up:
  • VF620 Baseline with Stock Exhaust - 532 WHP / 353 WTQ
  • VF620 + RPi X-Pipe - 580 WHP / 379 WTQ (X-Pipe Delta of 48 WHP / 26 WTQ)
  • VF620, RPi X-Pipe & 5 Gallons of 109 - 601 WHP / 391 WTQ (Race Gas Blend Delta of 21 WHP / 12 WTQ)


So IMO the numbers add up, but if you're going to be suspect of anything it's the near 50 WHP the RPi X-Pipe yielded. The Akra Exhaust on this car certainly is the highest quality piece available, but there are other exhaust systems that eliminate the cats completely & offer greater gains.
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