has any one used a crossovers pipe?
I'm planing out a new system for may NA and wanted to know if any one has tested a X or H pipe and dyno tested them for results. I don't know if the scavenging gain would be worth the loss of flow.
my plan was to uses a magna flow dual in dual out muffler as a pre silencer. the one i was looking at is a perforated X pipe that is covered in steal wool. Looking for input. as i don't want to spend the 80+ install cost to find out it will hurt out put a lot more than two wool pack's. also what is the best over all size for a stock port. street/auto-x car. something like 2" header to 2.25" or is that to small? thanks. |
Another one of these...
Wait till Mazdaspeed7 find this thread... :) Racing Beat claims best power out of a true dual. Others will claim otherwise. I still haven't seen the gains on the dyno from these crossover systems. -Ted |
Originally Posted by nillahcaz
I'm planing out a new system for may NA and wanted to know if any one has tested a X or H pipe and dyno tested them for results. I don't know if the scavenging gain would be worth the loss of flow.
http://www.racingbeat.com
Originally Posted by nillahcaz
also what is the best over all size for a stock port. street/auto-x car. something like 2" header to 2.25" or is that to small?
Originally Posted by RETed
Another one of these...
Wait till Mazdaspeed7Racing Beat claims best power out of a true dual. Racing Beat has claimed best power from collected exhausts for decades. It's only recently that they have even offered an uncollected (true dual) exhaust. Is their endorsement of uncollected exhausts something new that I missed, or were you thinking of Mazdatrix? Mazdatrix claims best power on non-ported NA engines with the uncollected exhaust. |
Originally Posted by RETed
Another one of these...
I may go ahead and get it. also have a h pipe and some regular pipes made up and have a dyno day. I think it would be interesting to try. I'll need to see what it would cost. also dose any one know if the new RB presilencer is uncolected? http://www.racingbeat.com/photos/16448a.jpg |
Originally Posted by Evil Aviator
?
Racing Beat has claimed best power from collected exhausts for decades. It's only recently that they have even offered an uncollected (true dual) exhaust. Is their endorsement of uncollected exhausts something new that I missed, or were you thinking of Mazdatrix? Mazdatrix claims best power on non-ported NA engines with the uncollected exhaust. I'm not an NA person. :) -Ted |
Exhaust
Don't know much about street legal just full race car.
But a short header with a 3 inches pipe works the best,and I did the dyno test and saw a 21hp difference between a loong header like the racebeat and my shorty one. here is a link of my exhaust. http://images.realride.com/cgi-bin/i..._Benny/exhaust benny realride.com |
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