Custom exhaust Version 2
#21
#22
Is this more if a chamber crossover ? I bought but have not installed yet .. https://www.ebay.com/p/Lawson-Indust...ipe/1740041273
Note the difference, here is the one you bought,
and the Magnaflow version...
Cheers,
Dave
#23
I believe what Ranchero was talking about when he said "Muffler Shop" was partially related to the non-Mandrel Bends. Those are power robbing and start at the beginning and are evident all the way through. Anytime you see such bends you can be assured you don't have the right Exhaust Guy, or he doesn't have the right equipment to do your project justice. Nothing personal, it is what it is.
Here are some pics that better illustrate part of what Ranchero was talking about, choked off non-Mandrel Bends are circled in red..... IMHO,those are a full stop situation.
For comparison, note the mandrel bends in the closeup of my Modular Crossover...look close at the bends and notice no choking off of the airflow.
Happy Weekend to all,
Dave
The following 3 users liked this post by 10XKR:
#24
Has anyone actually disected our silencers? Do they not flow from one pipe to the other already providing a crossover of the exhaust flow? Also are silencers actually restrictive? My problem now is after putting in high flows exhaust is extremely raspy and loud over 2500rpm, wondering if an xpipe will fix fox this or I would need a silencers of another type added.
Last edited by AlexJag; 07-14-2018 at 06:38 PM.
#25
Has anyone actually disected our silencers? Do they not flow from one pipe to the other already providing a crossover of the exhaust flow? Also are silencers actually restrictive? My problem now is after putting in high flows exhaust is extremely raspy and loud over 2500rpm, wondering if an xpipe will fix fox this or I would need a silencers of another type added.
#26
Hi Guys,
I believe what Ranchero was talking about when he said "Muffler Shop" was partially related to the non-Mandrel Bends. Those are power robbing and start at the beginning and are evident all the way through. Anytime you see such bends you can be assured you don't have the right Exhaust Guy, or he doesn't have the right equipment to do your project justice. Nothing personal, it is what it is.
Here are some pics that better illustrate part of what Ranchero was talking about, choked off non-Mandrel Bends are circled in red..... IMHO,those are a full stop situation.
For comparison, note the mandrel bends in the closeup of my Modular Crossover...look close at the bends and notice no choking off of the airflow.
Happy Weekend to all,
Dave
I believe what Ranchero was talking about when he said "Muffler Shop" was partially related to the non-Mandrel Bends. Those are power robbing and start at the beginning and are evident all the way through. Anytime you see such bends you can be assured you don't have the right Exhaust Guy, or he doesn't have the right equipment to do your project justice. Nothing personal, it is what it is.
Here are some pics that better illustrate part of what Ranchero was talking about, choked off non-Mandrel Bends are circled in red..... IMHO,those are a full stop situation.
For comparison, note the mandrel bends in the closeup of my Modular Crossover...look close at the bends and notice no choking off of the airflow.
Happy Weekend to all,
Dave
My intent was to have as free flowing of an exhaust system as possible especially to be mated with the more open intakes. I think I'm going to have the 200 cell cats removed for straight pipes and perhaps explore an H connector closer to the headers and perhaps a couple of Helmholtzs at the rear for cabin noise.
#27
Your car sounds really good on the Sebring videos. I think at the end of the day as long as your fuel economy doesn't tank that the intake and exhaust systems are working well.
I lost 2 mpg when I swapped from the stock box back to my exhaust but I think that's mostly because I drove exhaust, not the car with the new system. I did do a 2nd gear acceleration check leaving the local shopping center where my used book place is and where the local motorheads were hanging out and with the windows down got a very obvious blower whine as the old girl lifted her skirts. I never hear it with the glass up.
I lost 2 mpg when I swapped from the stock box back to my exhaust but I think that's mostly because I drove exhaust, not the car with the new system. I did do a 2nd gear acceleration check leaving the local shopping center where my used book place is and where the local motorheads were hanging out and with the windows down got a very obvious blower whine as the old girl lifted her skirts. I never hear it with the glass up.
#28
This is what's on my XKR, along with the stock rear muffler and 400 cell cats, the one on the left obviously, stock on the right.
The pipe diameter was increased from 55mm OD to 2-1/2" (~63mm) OD, bends are mandel type, done on a CNC bender.
The x-pipe is obviously fabricated from pipe and although it "looks" like a bit of a restriction, our 1/4 mile results confirm it flows enough for 500+ hp so IMHO there's no need for bigger or less restrictive designs.
The pipe diameter was increased from 55mm OD to 2-1/2" (~63mm) OD, bends are mandel type, done on a CNC bender.
The x-pipe is obviously fabricated from pipe and although it "looks" like a bit of a restriction, our 1/4 mile results confirm it flows enough for 500+ hp so IMHO there's no need for bigger or less restrictive designs.
#29
#30
#31
This is what's on my XKR, along with the stock rear muffler and 400 cell cats, the one on the left obviously, stock on the right.
The pipe diameter was increased from 55mm OD to 2-1/2" (~63mm) OD, bends are mandel type, done on a CNC bender.
The x-pipe is obviously fabricated from pipe and although it "looks" like a bit of a restriction, our 1/4 mile results confirm it flows enough for 500+ hp so IMHO there's no need for bigger or less restrictive designs.
The pipe diameter was increased from 55mm OD to 2-1/2" (~63mm) OD, bends are mandel type, done on a CNC bender.
The x-pipe is obviously fabricated from pipe and although it "looks" like a bit of a restriction, our 1/4 mile results confirm it flows enough for 500+ hp so IMHO there's no need for bigger or less restrictive designs.
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