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Posted by: mlindner Mar 4 2021, 02:14 PM

I have a beautiful set of Ben's header and his sport exhaust. Would like the exhaust a lot louder, what are you guys running. Mark

Posted by: brant Mar 4 2021, 02:24 PM

full open
not megaphones

I went from 2 separate exhausts to a cross over system
dyno'd at an additional 14 ft. lbs. back to back

Posted by: Jetsetsurfshop Mar 4 2021, 06:38 PM

QUOTE(brant @ Mar 4 2021, 12:24 PM)

Posted by: vintage914racer Mar 4 2021, 07:40 PM

QUOTE(Jetsetsurfshop @ Mar 4 2021, 04:38 PM)

QUOTE(brant @ Mar 4 2021, 12:24 PM)

full open
not megaphones

I went from 2 separate exhausts to a cross over system
dyno'd at an additional 14 ft. lbs. back to back

Who's system do you have? Whats it look like?

Posted by: wndsrfr Mar 5 2021, 07:46 AM

I'm running both megaphones and glass packs depending on my mood and the noise restrictions at whatever track I'm going to next....
Here's a couple of photos, not pretty but you get the idea....
The glass packs are "Jones Turbine" and are 2 inch inlet & outlet--had a local muffler shop weld on the flange.
Interesting to note....dyno runs with both show no difference...215ish so guess it's not the muffler that is controlling top end....

Here's a link to the Jones mufflers at Summit....
https://www.summitracing.com/parts/jex-jr20?seid=srese1&gclid=Cj0KCQiAyoeCBhCTARIsAOfpKxh5u-iiwNiicswKybUNQMdV5Mf8vYEcu8em739a1ZxuEUV-NeakCTIaApfCEALw_wcB

PS, Yes, that's Peter Dawe at the dyno....

Posted by: brant Mar 5 2021, 11:23 AM

things are crazy busy right now..
I just took pictures from my build thread to save time

original exhaust was straight through twin borla Stainless mufflers

2nd exhaust is not a true cross over. a true cross over should/could be even better
this is just a collector that brings the banks together at the very end of the system

still picked up 14ft lbs on a back to back dyno run




Attached image(s)

Posted by: brant Mar 5 2021, 07:00 PM

QUOTE(Jetsetsurfshop @ Mar 4 2021, 05:38 PM)

QUOTE(brant @ Mar 4 2021, 12:24 PM)

full open
not megaphones

I went from 2 separate exhausts to a cross over system
dyno'd at an additional 14 ft. lbs. back to back

Who's system do you have? Whats it look like?

Posted by: brant Mar 5 2021, 07:27 PM

Current pictures

Many years later




Attached thumbnail(s)

Posted by: mlindner Mar 8 2021, 03:59 PM

Thanks all for the reply.I have a set from Accumoto to test, sound is great. Will post a video when It works. Mark

Posted by: stownsen914 Mar 9 2021, 10:19 AM

I've run megaphones and an open 2 into 1 on my 2.7L race engine. I haven't dyno'd and honestly couldn't distinguish with the butt dyno either, but have always heard that the 2 into 1 will give better mid range.

I just saw a nice looking custom 2 into 1 in the classifieds.

Posted by: bretth Mar 9 2021, 10:42 AM

Get a Scart muffler.
https://www.youtube.com/watch?v=dXbVkl6CQ_Q

Posted by: stownsen914 Mar 9 2021, 02:20 PM

http://www.914world.com/bbs2/index.php?showtopic=351925

Posted by: Trekkor Mar 12 2021, 07:41 PM

https://youtu.be/jm6RbFUJaK4

KT

Posted by: wndsrfr Mar 12 2021, 09:12 PM

Here ya go with the Jones resonators....pump up the volume & enjoy!
https://www.youtube.com/watch?v=8H-i1WCOib4

Posted by: Trekkor Mar 12 2021, 09:24 PM

https://youtu.be/JL7RoUdv_nk

KT

Posted by: Justinp71 Mar 22 2021, 10:39 AM

I agree combining your exhaust gives extra power. I drove a more highly modified 3.0 with super trapps vs my more stock 3.0 (at the time) with combined exhaust and the difference of the two motors was not as noticeable as I would have thought. Meaning I believe having straight out exhaust combated his mods, but it was less drony.

Posted by: BadToTheBown Apr 19 2021, 10:13 PM

Just updated to cookie cutters from my SuperTrapps, certainly loud...

Posted by: carr914 Apr 20 2021, 04:50 AM