are FLP's unequal length?
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From: Henderson, NV
are FLP's unequal length? I know how people say FLP's flow better and i know they make more power (or do they <img border="0" title="" alt="[Roll Eyes]" src="images/icons/rolleyes.gif" /> )
But i always wondered when i look at the SLP header pictures, the tube at the back of the block is all twisted to make it equal to the length of the pipe at the front of the block which goes straight down to the collector......NOW i when looking at the FLP's they are badsically all straight, so how are all those four tubes on each header equal?
But i always wondered when i look at the SLP header pictures, the tube at the back of the block is all twisted to make it equal to the length of the pipe at the front of the block which goes straight down to the collector......NOW i when looking at the FLP's they are badsically all straight, so how are all those four tubes on each header equal?
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Posts: 712
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From: Dallas,Texas
Re: are FLP's unequal length? They are not equal length..
There best area is in the upper rpm range..
They are great for lowered cars , the slp
headers that I have hang lower, but I would
not trade them for the world.. they look great
sound great.. im pleased..
here is a flp picture
http://www.ls1info.com/article.php?sid=92
to compare here is a slp picture
http://ls1info.com/modules.php?set_a...view_album.php
The one thing to think about is flp requires extra parts and everything you need is with the slp.
There best area is in the upper rpm range..
They are great for lowered cars , the slp
headers that I have hang lower, but I would
not trade them for the world.. they look great
sound great.. im pleased..
here is a flp picture
http://www.ls1info.com/article.php?sid=92
to compare here is a slp picture
http://ls1info.com/modules.php?set_a...view_album.php
The one thing to think about is flp requires extra parts and everything you need is with the slp.
Re: are FLP's unequal length? It depends on what you compare it to as to whether or not the FLP's show more power. If you compare them to a set of Macs, for instance, on a stock-internal LS1, you're not going to see a power gain; the setup doesn't require it. Now, if you look at gains with the FLP's over the Macs with a stroker, the gains are significant. I gained an additional 10 RWHP at 7,000 RPM on my '98 T/A 383 with the FLP's over the Macs, and I gained 38 RWHP and 40 RWTQ at 4,500 and 5,000 RPM! The gains were across the board.
As for the SLP headers, I don't like them. The more bends you have the more it hurts exhaust flow. While the FLP's will show a nice gain throughout the mid-range AND the top-end, the SLP headers will shine best in the mid-range power. That equates to a nice SOTP feeling driving around town, but this mid-range power will not be used when going down the 1/4. Your RPM's stay above all of this mid-range power. SLP's website is VERY misleading because they show you this huge gain of power, but it's only in the mid-range. I like to refer to the SLP headers as the spaghetti headers. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> A very reputable sponsor on this site has tested every set of headers on the dyno, and the only one they saw a decrease in peak power from on a heads/cam setup was the SLP's. The decrease was in comparison to the FLPs, Hookers, and Grots.
As for the SLP headers, I don't like them. The more bends you have the more it hurts exhaust flow. While the FLP's will show a nice gain throughout the mid-range AND the top-end, the SLP headers will shine best in the mid-range power. That equates to a nice SOTP feeling driving around town, but this mid-range power will not be used when going down the 1/4. Your RPM's stay above all of this mid-range power. SLP's website is VERY misleading because they show you this huge gain of power, but it's only in the mid-range. I like to refer to the SLP headers as the spaghetti headers. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" /> A very reputable sponsor on this site has tested every set of headers on the dyno, and the only one they saw a decrease in peak power from on a heads/cam setup was the SLP's. The decrease was in comparison to the FLPs, Hookers, and Grots.
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From: Chi-Town, IL
Re: are FLP's unequal length? FLP really doesn't require extra parts...for 1200 bucks you get EVERYTHING....Headers, Y-pipe, with a selection of ORP's and Cats, all the clamps, the header gaskets, etc...the only thing I can think of thats "extra" is the EGR crap thats involved with them...but thats not really that hard to get around
Thread Starter
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From: Henderson, NV
Re: are FLP's unequal length? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by TA_2001:
<strong>They are not equal length..
There best area is in the upper rpm range..
They are great for lowered cars , the slp
headers that I have hang lower, but I would
not trade them for the world.. they look great
sound great.. im pleased..
here is a flp picture
http://www.ls1info.com/article.php?sid=92
to compare here is a slp picture
http://ls1info.com/modules.php?set_albumName=album02&op=modload& name=gallery&file=index&include=view_album.php
The one thing to think about is flp requires extra parts and everything you need is with the slp.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">yeah dude....what the heck are you talking about???
And you never said whether equal or unequal length matters.
<strong>They are not equal length..
There best area is in the upper rpm range..
They are great for lowered cars , the slp
headers that I have hang lower, but I would
not trade them for the world.. they look great
sound great.. im pleased..
here is a flp picture
http://www.ls1info.com/article.php?sid=92
to compare here is a slp picture
http://ls1info.com/modules.php?set_albumName=album02&op=modload& name=gallery&file=index&include=view_album.php
The one thing to think about is flp requires extra parts and everything you need is with the slp.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">yeah dude....what the heck are you talking about???
And you never said whether equal or unequal length matters.
Re: are FLP's unequal length? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by BIGBOS:
<strong>FLP really doesn't require extra parts...for 1200 bucks you get EVERYTHING....Headers, Y-pipe, with a selection of ORP's and Cats, all the clamps, the header gaskets, etc...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">One of my gripes about the FLP setup is that I have to buy the cats, too. Don't need them where I am at!
Geoff
'02 Hawk #646 No mods YET!
<strong>FLP really doesn't require extra parts...for 1200 bucks you get EVERYTHING....Headers, Y-pipe, with a selection of ORP's and Cats, all the clamps, the header gaskets, etc...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">One of my gripes about the FLP setup is that I have to buy the cats, too. Don't need them where I am at!
Geoff
'02 Hawk #646 No mods YET!
Thread Starter
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From: Henderson, NV
Re: are FLP's unequal length? also i thought that the FLPs came with everything you need like gaskets, bolts, etc. NO!? even though the install is harder with SLPs wouldnt you want to trade that off for getting some new gaskets and bolts.....
....(i mean all thats required for the SLP's is unbolting the mount for the torque arm or something to allow you to push it aside right?)
....(i mean all thats required for the SLP's is unbolting the mount for the torque arm or something to allow you to push it aside right?)
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TECH Enthusiast
Joined: Nov 2001
Posts: 712
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From: Dallas,Texas
Re: are FLP's unequal length? This may have changed soon as FLP started making
2001+ headers with NO egr..
exra parts required..
http://www.ls1info.com/article.php?sid=55
2001+ headers with NO egr..
exra parts required..
http://www.ls1info.com/article.php?sid=55
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From: Naperville, IL
Re: are FLP's unequal length? Guys,
Our headers do come with bolts and gaskets, there are only two things extra you will need. The first is one 02 extender for the left side, which is not neccessary, using the rear 02's you can make both of them work on the front. A extender will make for a easier and cleaner install. The second is simms.
The only time you will need different EGR or air tube fittings is on a 2000, which uses the early model stuff. Once again however, you can make the 2000 stuff work very easily.
You can buy the system without cats, the credit is $100.00
As for equal or tuned length headers vs unequal length tubes, the dyno numbers speak for themselves. This is a sales tool for people. On a race car, they are worth something, even then it is very little. However on a street car with a muffler and exhaust after it, any gain from that, is negated.
Dan
FLP
Our headers do come with bolts and gaskets, there are only two things extra you will need. The first is one 02 extender for the left side, which is not neccessary, using the rear 02's you can make both of them work on the front. A extender will make for a easier and cleaner install. The second is simms.
The only time you will need different EGR or air tube fittings is on a 2000, which uses the early model stuff. Once again however, you can make the 2000 stuff work very easily.
You can buy the system without cats, the credit is $100.00
As for equal or tuned length headers vs unequal length tubes, the dyno numbers speak for themselves. This is a sales tool for people. On a race car, they are worth something, even then it is very little. However on a street car with a muffler and exhaust after it, any gain from that, is negated.
Dan
FLP
