i read an article on fordmuscle.com were they used lake pipe inserts on a car instead of running mufflers under the car...the inserts are made by car chemistry... i plan on trying it has anyone else done this? here's the article http://www.fordmuscle.com/archives/2000/09/ccinserts/index.php
I am not 100% sold on the comment that was made about; "Most Cars Run Best Uncapped". As with many drag strips and even the SCCA when racing at tracks like Laguna Seca and Sears Point (Infinion Raceway) require mufflers. The peak dB is measured less than 20' and for the big boys it is 109dB. The Maverick I just purchased has "Race Mufflers" on it and this car has run 9.90's through the mufflers..................10.5's with the throttle stop. Race mufflers are a lot better than most people believe and only bring the dB down maybe 5/10............ This baffles look like they would interupt the flow and only be effective on a street type motor where you want the look of open headers, but with less noise...................and HP. IMHO
I have the CC inserts (3 disc) on my Mav as we speak. it depends on what you are loking for out od them. I chose to run them cause I want to run an X-pipe and exit the exhuast out in front of the rear wheels, similar to the old 65-66 R-model Shelbys. I haven't finshed the system yet, its still just open header, but I can tell you when I broke in the SBF, it was really quiet and seemed to respond quick to the throttle. so I'm not sure how it can be that restrictive. (by quiet, I mean you don't have to shout across the car when your tuning the carb at during break-in). Also as the pipes warm up it seems to get a tad quieter. not sure if that helps you any. but this will be a street car with occasional strip use, but mostly street.
Yeah, and the comment that you need back pressure to make low rpm torque. Somebody doesn't understand how an internal combustion engine works, think "pumping loss". So, if you stuff those muffler inserts into the collector, the collector no longer appears as an open volume to help the primary tubes scavange each other. Most collectors are to short anyway, that's why they make collector extensions and termination boxes.
