Quote:
Originally Posted by mpp9
The invidia is a bit more restrictive than fast intentions, stillen and berk so that it can be a bit tamer but what do you all think about the difference in overall gains when paired with hfcs. It would seem there's a point of diminished return when adding hfcs after a catback or catback after hfcs. You think invidia with hfcs would show the same gains as other exhausts with hfcs?
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I can definitely feel the power increase up top in the higher RPMS. When I saw how restrictive the stock exhaust was when they had it on the lift I knew I was going to feel something. The Invidia looks very similar to the Berks being they both sport the X pipe instead of the Y, and stack the mufflers. I think the average gain from this exhaust is 12whp so a little less then Stillen, Berk, and FI on the dyno. After I get to the track I will know how much extra power I am getting from the CBE. When I ran the 13.16 @ 108.85 I only had the ERZ HFC and Takeda SRI. The short ram intakes don’t do a lot in terms of extra power so most the gains coming from the HFC. I was still able to trap 109.49 which is only about 1mph off Z eliminator trap speed. He had Stillen CBE, G3, Berk HFC, and 4.09 and ran a 12.80 @ 110.33 so I am on par to match his trap speed just need to work on my launch to get some better times.
You think invidia with hfcs would show the same gains as other exhausts with hfcs?
In terms of how the car performs on the track yes the gains seem very similar between other exhaust and hfc combos.