Best J-pipe for 2007 tl-s
12-06-2009, 12:37 PM
#1
The obstacle is the path.
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Best J-pipe for 2007 tl-s
What would you guys recommend for the best j-pipes available for a 2007 Tl-s??
Just learned about them (yea im a noob
), and in love with the fact that there bolt on so that it wont ruin my warranty 
thanks
Just learned about them (yea im a noob
), and in love with the fact that there bolt on so that it wont ruin my warranty thanks
12-06-2009, 03:40 PM
#4
XLR8 is the best due to exhaust scavenging.
ATLP V2 is drop friendly (more than 2") and 1-2 whp short of the XLR8.
RV6 is a good deal, but won't show as much gains. The price of it for the difference of the power gained is all up to you if it is worth it.
RV6 PCD and test/race pipe are the best, considering quality, price, and performance.
ATLP V2 is drop friendly (more than 2") and 1-2 whp short of the XLR8.
RV6 is a good deal, but won't show as much gains. The price of it for the difference of the power gained is all up to you if it is worth it.
RV6 PCD and test/race pipe are the best, considering quality, price, and performance.
12-06-2009, 05:20 PM
#5
The obstacle is the path.
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XLR8 is the best due to exhaust scavenging.
ATLP V2 is drop friendly (more than 2") and 1-2 whp short of the XLR8.
RV6 is a good deal, but won't show as much gains. The price of it for the difference of the power gained is all up to you if it is worth it.
RV6 PCD and test/race pipe are the best, considering quality, price, and performance.
ATLP V2 is drop friendly (more than 2") and 1-2 whp short of the XLR8.
RV6 is a good deal, but won't show as much gains. The price of it for the difference of the power gained is all up to you if it is worth it.
RV6 PCD and test/race pipe are the best, considering quality, price, and performance.
Thanks again
12-06-2009, 07:54 PM
#7
Oh ok thanks alot. But i read from one of the vendors blogs that the xlr8 wont make much noise if you keep your entire exhaust stock. Which one would you recommend(loud noise wise) considering i cant change anything thats not bolt on on my exhaust because of my strict warranty?
Thanks again
Thanks again
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12-06-2009, 08:04 PM
#8
The obstacle is the path.
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12-07-2009, 08:47 AM
#9
Both are bolt ons. The precats really open up the exhaust. Not sure if precats would affect warranty issues but you are removing part of the emissions system. You will see a nice increase in performance. Cat back is more for sound/look than power gains.
12-07-2009, 11:16 AM
#12
I'd like to point out that it doesn't change anything at all when it comes to noise.
12-07-2009, 08:15 PM
#13
XLR8 is the best due to exhaust scavenging.
ATLP V2 is drop friendly (more than 2") and 1-2 whp short of the XLR8.
RV6 is a good deal, but won't show as much gains. The price of it for the difference of the power gained is all up to you if it is worth it.
RV6 PCD and test/race pipe are the best, considering quality, price, and performance.
ATLP V2 is drop friendly (more than 2") and 1-2 whp short of the XLR8.
RV6 is a good deal, but won't show as much gains. The price of it for the difference of the power gained is all up to you if it is worth it.
RV6 PCD and test/race pipe are the best, considering quality, price, and performance.
12-08-2009, 07:06 AM
#16
Safety Car
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PrimeTimeTSA (12-01-2015)
12-08-2009, 07:36 AM
#17
Safety Car
12-08-2009, 11:33 AM
#20
12-09-2009, 09:23 PM
#21
This pic below was the published dyno chart for the ATLP Version 1. The ATLP version 1 and XLR8 were nearly identical in design. Therefore, this dyno chart should give a good idea of the gains that you would get from the XLR8. I know that in my case when I installed the XLR8 jpipe, the gains for sure reflected this dyno chart.
As you mentioned, principals aren't the same as they would be for headers as the primary cats and cast manifold affect a lot of the characteristics of exhaust flow prior to even arriving at the J-Pipe. We've done a lot of testing with various piping sizes from 1.75" to 2.5", various lengths, and designs. Because of the limitations that this is a post cat and not a true-header layout, there is only so much to what a J-Pipe can achieve. If you extended the primaries all the way back, would you see a gain? Probably not, as there is a certain balance where the velocity drops of, and that is where you implement a cross-over in order to utilize "scavenging" created from the individual pulses. At some point creating a longer pipe doesn't yield you any more results. And I believe both J-Pipes in question are right at that point where moving it back or fourth will theoretically yield half a horsepower, not realistically will not Also keep in mind, the I.D. is also larger than stock.
On a final note, here is the inside construction of our y-merge. I can't imagine it being any "smoother" than this?
The above torque gains are pretty impressive. Any gains as far as HP go?
Sorry Inaccurate, you're going to have to make sense of this huge thought bubble in my head. If you want to discuss more feel free to PM me.
12-10-2009, 08:08 AM
#22
Safety Car
aznbo187,
I am in agreement with all of your points.
This is a discussion that would benefit the readers. Best not taken offline (PM).
Sorry for any confusion I may have caused. I did attempt to make this point in my post. In my first sentence of my post (Post #17), I wrote "This pic below was the published dyno chart for the ATLP Version 1."
I agree. There is an optimum length at some point. More and more is not better.
In my post in that other thread, I stated in the opening sentence that my post was "based on theory and conjecture." However, I am a firm believer in empirical data, collected from testing and/or observation/experience. As such, I concede. :surrender To me, your testing means more than my "theory and conjecture".
I have been known to exaggerate and be biased at times 
. I try to fight that natural instinct... just human at times.
And in closing, I would like to mention the following again (first posted in that other thread).
"We should appreciate that we TL owners have companies that are willing to produce performance goodies for our small market. As such, I try to point out the strengths of each company's product. The strength of the ATLP J-pipe (Version 2) is that it is slammed-friendly, providing more clearance for a lowered suspension."
Thank you to ATLP, Excelerate, Heeltoe, RonJon, and RV6 (in alphabetical order) for supporting our forum and our need for performance.
I am in agreement with all of your points.
This is a discussion that would benefit the readers. Best not taken offline (PM).
In my post in that other thread, I stated in the opening sentence that my post was "based on theory and conjecture." However, I am a firm believer in empirical data, collected from testing and/or observation/experience. As such, I concede. :surrender To me, your testing means more than my "theory and conjecture".
. I try to fight that natural instinct... just human at times.And in closing, I would like to mention the following again (first posted in that other thread).
"We should appreciate that we TL owners have companies that are willing to produce performance goodies for our small market. As such, I try to point out the strengths of each company's product. The strength of the ATLP J-pipe (Version 2) is that it is slammed-friendly, providing more clearance for a lowered suspension."
Thank you to ATLP, Excelerate, Heeltoe, RonJon, and RV6 (in alphabetical order) for supporting our forum and our need for performance.
12-10-2009, 03:48 PM
#23
The obstacle is the path.
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Join Date: Sep 2008
Location: Boca Raton
Age: 33
Posts: 63
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aznbo187,
I am in agreement with all of your points.
This is a discussion that would benefit the readers. Best not taken offline (PM).
Sorry for any confusion I may have caused. I did attempt to make this point in my post. In my first sentence of my post (Post #17), I wrote "This pic below was the published dyno chart for the ATLP Version 1."
I agree. There is an optimum length at some point. More and more is not better.
In my post in that other thread, I stated in the opening sentence that my post was "based on theory and conjecture." However, I am a firm believer in empirical data, collected from testing and/or observation/experience. As such, I concede. :surrender To me, your testing means more than my "theory and conjecture".
I have been known to exaggerate and be biased at times. I try to fight that natural instinct... just human at times.
And in closing, I would like to mention the following again (first posted in that other thread).
"We should appreciate that we TL owners have companies that are willing to produce performance goodies for our small market. As such, I try to point out the strengths of each company's product. The strength of the ATLP J-pipe (Version 2) is that it is slammed-friendly, providing more clearance for a lowered suspension."
Thank you to ATLP, Excelerate, Heeltoe, RonJon, and RV6 (in alphabetical order) for supporting our forum and our need for performance.
I am in agreement with all of your points.
This is a discussion that would benefit the readers. Best not taken offline (PM).
Sorry for any confusion I may have caused. I did attempt to make this point in my post. In my first sentence of my post (Post #17), I wrote "This pic below was the published dyno chart for the ATLP Version 1."
I agree. There is an optimum length at some point. More and more is not better.
In my post in that other thread, I stated in the opening sentence that my post was "based on theory and conjecture." However, I am a firm believer in empirical data, collected from testing and/or observation/experience. As such, I concede. :surrender To me, your testing means more than my "theory and conjecture".
I have been known to exaggerate and be biased at times
. I try to fight that natural instinct... just human at times.And in closing, I would like to mention the following again (first posted in that other thread).
"We should appreciate that we TL owners have companies that are willing to produce performance goodies for our small market. As such, I try to point out the strengths of each company's product. The strength of the ATLP J-pipe (Version 2) is that it is slammed-friendly, providing more clearance for a lowered suspension."
Thank you to ATLP, Excelerate, Heeltoe, RonJon, and RV6 (in alphabetical order) for supporting our forum and our need for performance.
12-10-2009, 04:22 PM
#24
aznbo187,
I am in agreement with all of your points.
This is a discussion that would benefit the readers. Best not taken offline (PM).
Sorry for any confusion I may have caused. I did attempt to make this point in my post. In my first sentence of my post (Post #17), I wrote "This pic below was the published dyno chart for the ATLP Version 1."
I agree. There is an optimum length at some point. More and more is not better.
In my post in that other thread, I stated in the opening sentence that my post was "based on theory and conjecture." However, I am a firm believer in empirical data, collected from testing and/or observation/experience. As such, I concede. :surrender To me, your testing means more than my "theory and conjecture".
I have been known to exaggerate and be biased at times. I try to fight that natural instinct... just human at times.
And in closing, I would like to mention the following again (first posted in that other thread).
"We should appreciate that we TL owners have companies that are willing to produce performance goodies for our small market. As such, I try to point out the strengths of each company's product. The strength of the ATLP J-pipe (Version 2) is that it is slammed-friendly, providing more clearance for a lowered suspension."
Thank you to ATLP, Excelerate, Heeltoe, RonJon, and RV6 (in alphabetical order) for supporting our forum and our need for performance.
I am in agreement with all of your points.
This is a discussion that would benefit the readers. Best not taken offline (PM).
Sorry for any confusion I may have caused. I did attempt to make this point in my post. In my first sentence of my post (Post #17), I wrote "This pic below was the published dyno chart for the ATLP Version 1."
I agree. There is an optimum length at some point. More and more is not better.
In my post in that other thread, I stated in the opening sentence that my post was "based on theory and conjecture." However, I am a firm believer in empirical data, collected from testing and/or observation/experience. As such, I concede. :surrender To me, your testing means more than my "theory and conjecture".
I have been known to exaggerate and be biased at times
. I try to fight that natural instinct... just human at times.And in closing, I would like to mention the following again (first posted in that other thread).
"We should appreciate that we TL owners have companies that are willing to produce performance goodies for our small market. As such, I try to point out the strengths of each company's product. The strength of the ATLP J-pipe (Version 2) is that it is slammed-friendly, providing more clearance for a lowered suspension."
Thank you to ATLP, Excelerate, Heeltoe, RonJon, and RV6 (in alphabetical order) for supporting our forum and our need for performance.
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