True dual piping vs. single pipe dual tip.
#17
06-10-2011, 07:39 PM
back pressure is not good. There's no scavenging after the Y pipe, or x pipe, or whatever you have in that place. Most scavenging is done near the engine. Dual is better for air flow.
on a NA set up, you might actually lose power going larger than a 3" piping.
I'd say go with a single if you are turboed or want a loud system. Otherwise go with a dual set up.
You will get better performance with a 2.25" test pipe into a 2.5" y pipe or x pipe and then into a 3" mid pipe/ muffler
on a NA set up, you might actually lose power going larger than a 3" piping.
I'd say go with a single if you are turboed or want a loud system. Otherwise go with a dual set up.
You will get better performance with a 2.25" test pipe into a 2.5" y pipe or x pipe and then into a 3" mid pipe/ muffler
#18
06-12-2011, 07:10 PM
back pressure is not good. There's no scavenging after the Y pipe, or x pipe, or whatever you have in that place. Most scavenging is done near the engine. Dual is better for air flow.
on a NA set up, you might actually lose power going larger than a 3" piping.
I'd say go with a single if you are turboed or want a loud system. Otherwise go with a dual set up.
You will get better performance with a 2.25" test pipe into a 2.5" y pipe or x pipe and then into a 3" mid pipe/ muffler
on a NA set up, you might actually lose power going larger than a 3" piping.
I'd say go with a single if you are turboed or want a loud system. Otherwise go with a dual set up.
You will get better performance with a 2.25" test pipe into a 2.5" y pipe or x pipe and then into a 3" mid pipe/ muffler
#23
06-14-2011, 12:53 PM
It depends on the piping and what mods you have. If you're not boosted and you're on a stock motor then either a single 3" or dual 2.25" would be ideal. I don't think it would be a good idea to go beyond 2.5" in diameter with a dual. Single 3" would be the better route for a stock motor....at least this is what I was told by a reputable guy that makes his own exhausts for numerous vehicles. He never gave his reasoning to the full, but part of it was cost wise. It would be cheaper since there is less piping, less work, and it would save weight as well.
#24
06-15-2011, 08:24 AM
And I'm giving you the beneift of the doubt that you are actually referring to Tony's comments. AND that you actually understand WHY Tony chooses to design his exahust the way he does.
I bet you don't. Just mentioning backpressure at all illustrates you don't understand what Tony is getting at.
#26
06-15-2011, 11:10 AM
If you look at the numbers - the best gains for NA are from a single path piping for motordynes exhaust. That also includes his exhaust diffuser.
That aside, compare the numbers. The performance difference between variations of Motordyne exhausts are all marginal. From a "cat-back" perspective, there is no real advantage of one piping over the other - just cost and sound.
Different brands/designs will vary much more than anything else though. Research/quality will play a factor.
That aside, compare the numbers. The performance difference between variations of Motordyne exhausts are all marginal. From a "cat-back" perspective, there is no real advantage of one piping over the other - just cost and sound.
Different brands/designs will vary much more than anything else though. Research/quality will play a factor.
#27
06-15-2011, 11:11 AM
If you look at the numbers - the best gains for NA are from a single path piping for motordynes exhaust. That also includes his exhaust diffuser.
That aside, compare the numbers. The performance difference between variations of Motordyne exhausts are all marginal. From a "cat-back" perspective, there is no real advantage of one piping over the other - just cost, weight and sound.
Different brands/designs will vary much more than anything else though. R&D/quality will play a factor.
That aside, compare the numbers. The performance difference between variations of Motordyne exhausts are all marginal. From a "cat-back" perspective, there is no real advantage of one piping over the other - just cost, weight and sound.
Different brands/designs will vary much more than anything else though. R&D/quality will play a factor.
#28
06-15-2011, 11:57 AM
#29
06-15-2011, 01:13 PM
For starters, I don't think Tony uses the incorrect term "backpressure" as a reference.
to summarize his theory, he is interested in exhaust gas velocities. And Tony is willing to give up a slight amount of hp/torque down low if the gains up high are enough.
The reason why tony probably likes the single is that a single big pipe has more area than two smaller pipes. But then again, tony doesn't look for gains after the merge point of the two pipes. To him, the pipe can be not big enough but almost cannot be too big after the merge point. That is if the merge point is assumed to be located at the correct point, of the right sized pipe and is designed right
What are your thoughts?
to summarize his theory, he is interested in exhaust gas velocities. And Tony is willing to give up a slight amount of hp/torque down low if the gains up high are enough.
The reason why tony probably likes the single is that a single big pipe has more area than two smaller pipes. But then again, tony doesn't look for gains after the merge point of the two pipes. To him, the pipe can be not big enough but almost cannot be too big after the merge point. That is if the merge point is assumed to be located at the correct point, of the right sized pipe and is designed right
What are your thoughts?
