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cat + slow = very

Old Feb 28, 2007 | 11:03 AM
  #16  
boostedwrx's Avatar
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From: Seattle, WA
For Noizes info, I have the Helix HFC and that is what I was dynoed with...
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Old Feb 28, 2007 | 11:34 AM
  #17  
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From: SL,UT
Yeah, the most notable improvement was the boost/power/torque curves... he may have only hit 15 hp less than me but almost every dyno run I held my hp longer than he did and hit the max faster than he did (spool up was faster).

What's funny about the testpipe-cat deal is that here in Utah (dunno about other states) but I passed the "sniff" test with the stick up the tailpipe but there was no "visable" cat so I failed... And my tint is too dark in the front. Hopefully I don't run into any problems again this year.

And CARB laws suck! Props to all the people who love cars and still live in Cali.
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Old Feb 28, 2007 | 12:54 PM
  #18  
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When I had my DSM and DSMLink, I did logs on the same day with a hi-flow cat and a test pipe.

Nothing else was change and I picked up 1.5 lb/min of airflow at around the 400 HP level. So, that equates to roughly 15 HP, like some have said already.


Eric
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