So, about that snorkel :
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Originally Posted by 2forme
This^
They probably had the hood open, and a fan blowing on it.
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Aren't all sessions on the dyno done this way?
*Before you get to what you want to say, read on...*
Quote:
Originally Posted by ATL BRZ
It absolutely makes a difference. IMO the Airaid dyno run should be scrapped and done again since Airaid has stated many times in their intake development thread that when they put it on a flowbench after removing the snorkel that they measured a 20% improvement in airflow. It is clearly a bottleneck for the Airaid in particular. The velocity stack design of the Airaid inlet is actually very good at drawing in fresh, cool air versus the snorkel.
The instructions for the Airaid do not require snorkel removal but it is strongly suggested by all their reps and everyone that installs their intakes for max performance. That's likely a contributing factor to why you're seeing the top end loss on the dyno.
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Would it have helped if I put a carpet fan blowing right into the snorkel from 2 feet away and doing the tests to compensate for more airflow, albeit I don't have a flowbench?
Quote:
Originally Posted by brichard0625
I took the snorkel out of my bumper and the gap is pretty much the same and with out the snorkel according to the results my car pulled in about 7 more g/s and kept the intake cooler during wot with the stock intake and hks intake filter.
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Did this on another customer's car in regards to AiRaid, had negligible differences.
Quote:
Originally Posted by ATL BRZ
This. Plus the presence of the snorkel in all these tests (where the Airaid and Takeda need a snorkel delete for best results) is why I think everyone should take these results with a huge grain of salt.
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Indeed. Like I said, take it for what it's worth - but there will be people who want to see what they want to see. All things equal in a dyno environment though, these are the results...
Quote:
Originally Posted by 2forme
The Injen and AIRAID units pull more air from the engine bay. As the temps rise in the engine bay, the power these intakes put out decrease (the effect is rather quick, actually). By just leaving the hood open for all intakes, you're negating this advantage, which can produce unrealistic results.
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Sure, warmer IATs would yield less power, that's a given. That's why there's cooling fan in front of the car and the hood popped. You're also assuming I'm doing back to back to back runs, which I'm not.
Each run had sufficient time to cool down +/1 3 minutes between runs but hey, I'm not here to argue with you. Did YOU get to do YOUR tests they way you want on the AiRaid intake? Would have been nice to see some collective results.
Regards,
Bob @ Drift-Office, LLC