Well the topic states it all, Im looking into getting some headers for my 01 SS M6, and was wondering which is the better company to go with? My car is basically all stock, does anyone have any dyno comparisions, or track numbers on the 2?

any info would be great...thanks

 

SLPS here... only prob i had was when i hit a little dip in the road going 85ish and the passanger side rubbed... <img src="gr_sad.gif" border="0">


they hang low, but they are cheaper than FLPS..

i got mine for 840 with offroad pipe shipped <img src="gr_grin.gif" border="0">

[ March 12, 2002: Message edited by: 98TAauto ]</p>

 

[quote]Originally posted by 98TAauto:
<strong>

i got mine for 840 with offroad pipe shipped

[ March 12, 2002: Message edited by: 98TAauto ]</strong><hr></blockquote>

Thats what I paid too. Alittle more cause I go the Cats though. Raging Mototrsports has them for about 780 I think. Anyway, here are my HP numbers with them. we figured about 320HP before the Headers with my trap times/speeds and vehicle weight. I got 338HP/358TQ (actual dyno, i have the sheet nice and flat)for final numbers. Feels good driving and they sound good as well. They are a biotch to install, helps with help. I did have some issues with the wire install but have since spliced and rerouted the wires and no more problems. No track times yet this year has started for us yet. The SLP's are great if you are going to stay relitivly stock (no more than 410HP) but if you plan on really gearing into it go for the FLP's. I didn't have the money for the FLP's at the time and I am impatient when it comes to these things, if I don't spend it now the wife will take it, so I got the SLP's. Shortly I love my headers and they sound awsome with my Whisper Cat Back.

<img src="gr_grin.gif" border="0">

[ March 12, 2002: Message edited by: bd mnky ]</p>

 

I have FLPs and my car is lowered. I only have about 4" clearance between the cat and the ground. Don't forget that with FLPs you can switch the cats out with the off road extensions.

My Y pipe does not hit my floorboard.

I hear these are on back order for a while.

 

Bd MNK I do have to agree with you on the when theres money in hand, you need to spend it rule. I dont care to wait either. I do appreciate everyones info so far, havent quite made a decision, but I'm leaning more towards the SLP right now. and what wire did you have to spice into and move...the O2 wires?

 

i went with flps so i could swap to cats when needed.

installed was a piece of cake

no clearance problems and my car is lowered a bit in the front

only problem i have is the coating. 5K miles and they are starting to rust <img src="gr_images/icons/mad.gif" border="0">

 

TRYMYSS,

I'm going threw the same debate you are. The only mod I have is an MTI lid and I would like to get headers. I still can't decide between FLP's or the SLP's. FYI (like someone already mentioned) the FLP's are sold as a package. They come with the headers, cats, ORP, and the y pipe. If you compare the price of that with headers, cats, and y pipe from SLP, the SLP's are actually a little more expensive. In addition, I called SLP and asked if their headers were compatable with the stock y pipe and they said no. You have to install the SLP headers, cats, and y pipe at the same time. Maybe someone with SLP's can verify this.

Thanks

 

Here is a photo of the wire he is talking about it is in the orange tube. I made a heat shield to cover the heat resistant orange cover.



[ March 12, 2002: Message edited by: 2000 Camaro SS ]</p>

 

I like the idea of the heat shield, but did you make that with the top end off? I think it would be hard to make and fasten good with the head in the way.

I have the slp's THEY DO bang the floorboard, I fixed that with a little cutting and bending though. haha I love mine.

 

I have pics but can't post them if someone for me could I can show you what I did. I spliced and extened all those wires in that orange loom. They use to travel the same as his now mine go down to the fender well behind the A/C lines then they travel down with the battery ground to the block. They go no where near the headers now. I re-routed the Batt positive wire behind the headers as well as the O2 extensions. You can actually change out the race pipes and the cats with the SLP's but it is a pain. The Y pipe you get with the SLP's is a cannon 3 in all teh way back to the collector and mandral bent. I welded my cats to the Y, I am not concered with teh race pipe/cat swap I don't move enough air through my car to where that is even a concern yet. If I was blown damn stright those cats are coming out. You can get the Dyna Tecks which from what I under stand are FLP's with out all the other stuff. But a friend of mine in our club got those and paid just as much for all the custom Y pipe and all as he would if he just bought SLP's. They both are good, and they both have their good and bad points the worst is usually alot of people use the flip of a coin. Don't rule out Macs either though. Smokeur50 (Mark owner of Raging Motorsports) runs low 11's with macs. If you want me to send any of you pics of my wire relocation email me and I will more than happily send them to you. Good luck on the decision. <img src="gr_stretch.gif" border="0"> ONe thing is for sure the torque I made, made me one happy camper with the SLP's. And I have basic modes from the lid, catback, and a ported TB i got hte numbers I posted before. And teh dyno sheet is nice and flat. Most gains start around the mid and they climb nice till 5200-5600 before they loss any momentum, i dropped to 345 tq at my rev limiter, and from 0-5300 RPMS it never drops under 310TQ until teh HP and TQ meet then the HP curve takes off to 338 at about 4300 RPM's and peeks at 5600 then drops. These headers helped in the mid range where most of our down shifts begin so I punch out early and as long as I am ahead and don't fug up I usually stay there. Which is what I like the most

 

Most guys went with FLP's. I went with SLP's.

FLP's easer to install
give nice power
fine quality
some problem with hitting floorboard
good clearance
a few problems (not many) with the coating
Affordable.

SLP's Fuggin hard to install
nice power
fine quality
do not hit floorboard
with high flow cats little ground Clarence 6-7 inches
very good coating
not to affordable

I can say my SLP's sound great and I got a very good SOTP feel especially with torque. I'm not sure on HP numbers to tell you the truth I don't think thee are a whole lot of us out here with SLP's. I could be wrong. I would like to see some Dyno numbers myself on the SLP's.

 

My SLP's work great. 5000 miles and no real problems. They have only scraped 3 times. <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" /> <img src="graemlins/fluffy.gif" border="0" alt="[Fluffy]" />

 

I have the SLPs and have some HP #s. Ill have to find what site my sheets are on, but for just a couple bolt ons I made 350 HP and 360 TQ N/A. Ill find the graph.

 

moving to Engine bolt-on forum

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by terry99ta:
<strong>I like the idea of the heat shield, but did you make that with the top end off? I think it would be hard to make and fasten good with the head in the way.

I have the slp's THEY DO bang the floorboard, I fixed that with a little cutting and bending though. haha I love mine.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Yes the top end was off I took advantage of that. I don't think it could be done with out it off. Mabe with the headers off but there would be not much room to move.

 

The only wire of concern can be tied back with a simple wire-tie. Less than one minute and less than one dollar.

 

FLP's here. Been on about a year now. No floor board banging. No ground scraping but I'm stock height. Finish still looks like new. I have not done so but liked the idea of being able to swap Cats for race pipes if desired. The design of the couplings makes that a comparative snap compared to old style flange type of coupling. Have heard both claims of better/worse to SLP performance wise. Somewhat discount most of that as we all are prone to support our own choices. Most info does support easier install of FLP and several wrenchers support the FLP for ease of working around them in the engine bay in the future.

 

SLP here.. i love em....

here is some pictures of the kit..

http://ls1info.com/modules.php?op=mo...ery&file=index

 

In October of 2000, I was fortunate to get the first FLP header package and was the first to dyno them. I wrote a "testimional" and posted it on LS1.com right afterwards. I still have those comments so I will copy/paste them here.

I continue to be amazed at the sound and the quality of the FLP's. I have never regretted buying them.

BTW, when the FLP's were installed, my only mods were Borla, MTI lid and K&N.

Danny

First the APPEARANCE. Everything is made out of heavy duty material and is ceramic coated. It's beautiful and should outlast the rest of my car.

Next the EXHAUST NOTE. In a word, AWESOME. It's almost worth the price of admission for the incredible sound. Initially, I installed the OFF-ROAD-PIPE. At idle there is a nice little rumble. Only the hint of what is in store for you. Touch the accelerator and the engine comes to life and starts making these wonderful sounds. At WOT, it sounds mean-as-hell. Let off the gas afterwards and there is another set of great sounds. My words really can't do it justice. With the CATS, the sound level is about half. It is a more refined sound, not quite so mean and scary. I "should" run the cats most of the time to reduce the chances of drawing unwanted attention from the cops, but I must admit ... I will be looking for excuses to put the off-road-pipes back on my car every chance I get. Swapping the ORPs and Cats is easy with the v-flange clamps.

INSTALLATION. Peace of cake, compared to some headers from what I've heard. I don't do a whole lot on my car but I was able to do the installation by myself one weekend. The headers easily slide in from the bottom. It took me longer to get the stock junk off my car than to install the FLP header package.

Finally the DYNO RESULTS. Dyno was done at MTI where my previous dyno was done. The numbers are "corrected" numbers with the off-road pipes installed. The cats work well, only 2.5 rwhp less and 2.1 rwtq less than with ORPs.

Peak rwhp went from 315.0 to 341.4 +26.4
Peak rwtq went from 331.2 to 355.7 +24.5

BEFORE AFTER
rpm rwhp rwhp Difference
---- ---- ---- ----------
2500 147 154 + 7
3000 178 189 +11
3500 211 228 +17
4000 250 266 +16
4500 283 301 +18
5000 307 329 +22
5500 315 339 +24
6000 307 334 +27


BEFORE AFTER
rpm rwtq rwtq Difference
---- ---- ---- ----------
2500 308 324 +16
3000 311 331 +20
3500 317 342 +25
4000 329 349 +20
4500 330 351 +21
5000 322 345 +23
5500 300 324 +24
6000 268 292 +24

I suspect the cars that will benefit most from the FLP LT header package are those that have been modified with nitrous, cam, heads, supercharger or turbo(s).

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by ACCELR8:
<strong>TRYMYSS,

I'm going threw the same debate you are. The only mod I have is an MTI lid and I would like to get headers. I still can't decide between FLP's or the SLP's. FYI (like someone already mentioned) the FLP's are sold as a package. They come with the headers, cats, ORP, and the y pipe. If you compare the price of that with headers, cats, and y pipe from SLP, the SLP's are actually a little more expensive. In addition, I called SLP and asked if their headers were compatable with the stock y pipe and they said no. You have to install the SLP headers, cats, and y pipe at the same time. Maybe someone with SLP's can verify this.

Thanks</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">This is true about the buying all at once. The stok Y will not work with thes headers and High Flo cats.