Quote:
Originally Posted by tjoy
Just read up on Mach V's dyno testing w/ the BRZ over at nasioc.
Three runs
1. Stock run
2. stock exhaust replaced w/ straight pipe
3. air filter removed
Results:
No gains outside of margin of error. I think the idea that an air filter or exhaust (of same weight as stock) will have a performance impact might be put to rest now.
The good news is, it means the engineers who designed the car did a pretty good job w/ those components.
I think when I read Dyno results for exhaust now, it would be safe to completely ignore any gains shown and just make sure there is no loss. Weight and harmonics are the buy levers.
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Ummmm, no.
All Dan accomplished there is a stock run. Period.
The other stuff is just childish antics. I don't think Dan would be posting up something that would prevent him from selling a customer a product that is advertised to make power for the BRZ/FR-S.
Why would anyone assume that taking the filter/muffler off of a modern day FI, DI, Hi-Comp, Flat engine would make HP/TQ?
To really make either of those "mods" work for the car would require some tuning of the factory ECU or put on a piggyback/standalone. You would prolly have to adjust air, fuel, spark, timing, etc, etc...