I'm in the market for longtube headers and was debating between the FLP's and the SLP's. I would like to know how they match up performance wise as well as, say, how much ground clearance to they give. I have an '02 WS-6 M6 with the following bolt-ons: slp air lid + filter, ported throttle body, throttle body by-pass free mod, cutout, SLP cat-back exhaust w/ Magnaflow muffler. Future mods include: SLP MAF Sensor, ASP pulleys, TR LS1 cam, and most importantly for this thread... the SLP L1 Suspension Kit (which should drop my car 1" - 1.5"). I plan on running my car with cats. Any information is appreciated. thanks

 

If I had to choose I would go with the FLPs. They don't have that stupid "spagetti" design and they seem to be better quality.

 

I would go with the FLP's as well I plan on buying a set as soon as I have a lil extra cash.
Jimmy

 

the FLP's are what i would go with as well.
The SLP headers have very poor ground clearence.

 

I am in the same boat and I have had the FLP recommended to me b/c of emmission issues, even though there are none in AL. Hi-flow cats are the way to go. If ground clearance is a big issue you might want to look at the QTPs <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

 

FLP's are the best headers barnone. if u dont want to pay that much u should look at the QTP headers.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tripp:
<strong> FLP's are the best headers barnone. if u dont want to pay that much u should look at the QTP headers. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, when you compare apples to apples, the QTP are more. Take the cost of the headers and about $500 for the Y pipe and it is more the the FLP. Also, I personally think the QTP are better because they look to more of a LT design, are stainless, have a better Y pipe setup, and have optional high velicity collectors.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 1BAD-SS:
<strong> I have had the FLP recommended to me b/c of emmission issues, even though there are none in AL. Hi-flow cats are the way to go. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Why would you care about emission issues if you don't have any testing? Skip the cats, save the money.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tripp:
<strong> FLP's are the best headers barnone. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I disagree. For an LT header, I would pick TTS as top chioce.

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by RPM WS6:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tripp:
<strong> FLP's are the best headers barnone. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I disagree. For an LT header, I would pick TTS as top chioce. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I would disagree with TTS just because the Y pipe isn't that good and the cats are not very high flowing compared to other aftermarkets.

 

he said for a LT header, not cats or Y.

byrd have you checked out QTP?

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 98 LPE SS:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tripp:
<strong> FLP's are the best headers barnone. if u dont want to pay that much u should look at the QTP headers. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, when you compare apples to apples, the QTP are more. Take the cost of the headers and about $500 for the Y pipe and it is more the the FLP. Also, I personally think the QTP are better because they look to more of a LT design, are stainless, have a better Y pipe setup, and have optional high velicity collectors. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I wanna see how bada$$ a 500$ ypipe is, maybe im readin that wrong?

No flame inteded, i would never pay for Jethot coated or more then 200$ for a ypipe,

 

I have SLP's myself. So far I've had no problems at all with ground clearance or anything else. But then again they are just sitting on my floor waiting for my lazy butt to install them. If smog isn't a problem just nix the cats and run them straight. <img border="0" title="" alt="[Razz]" src="gr_images/icons/tongue.gif" />

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Jason98z:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 98 LPE SS:
<strong> </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Tripp:
<strong> FLP's are the best headers barnone. if u dont want to pay that much u should look at the QTP headers. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Actually, when you compare apples to apples, the QTP are more. Take the cost of the headers and about $500 for the Y pipe and it is more the the FLP. Also, I personally think the QTP are better because they look to more of a LT design, are stainless, have a better Y pipe setup, and have optional high velicity collectors. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I wanna see how bada$$ a 500$ ypipe is, maybe im readin that wrong?

No flame inteded, i would never pay for Jethot coated or more then 200$ for a ypipe, </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">The $500 does sound really expensive initially until you break it down. Most coated Y pipes are actually more expensive then SS and are about $250. Throw in the two cats, the FLowmaster Y collector and the labor to put it together and $500 makes some sense. The More Y pipe is even more at $550 but it does come with RT cats but no Flowmaster Y collector.

 

Thanks for all the info.

Between the two (FLP/SLP), I'm leaning towards FLP... but I am going to research QTP and TTS before buying anything.

and for the record... I'm in CA (bay area) and smog is definitely an issue.

thanks again.

 

Go with the FLP's over the SLP's. I've installed the SLP's on a few cars. The install sucks with the SLp's. Personally though, I'd go with the headers from Proven Performance. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

 

...my FLPs bang ...i have installed them with the cats and y-pipe....the y pipe bangs like hell on the floor board...can't seem to fix it...

...i even took it to a shop and they could not cure it either....

...so I say stay away from the FLPs....

 

robertbartsch:

How low is your car? Have you modified your suspension?

thanks

 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by robertbartsch:
<strong> ...my FLPs bang ...i have installed them with the cats and y-pipe....the y pipe bangs like hell on the floor board...can't seem to fix it...

...i even took it to a shop and they could not cure it either....

...so I say stay away from the FLPs.... </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Have you tried a poly trans mount?
My friend had a problem with his Hooker headers and y-pipe banging that the poly trans mount seemed to fix. Helped him install it and went for a ride. It was as quiet as my 1LE mount is (we shaved off the bumps and got rid of the preload plate).

Chris

 

I see all of these props to FLP headers, but yet when i talk to people that have them they dislike them and wish they had gotten something cheaper and better. Yeah they clear the ground better, but they bang the floorboard because of that CLEARANCE... SLP's hang about 1-2inches lower for that SOLE reason.. no bangin <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

PLus ive seen SLP's no more than a year old and they look like they are 5years old. My SLP's were one of the first 10 shipped from Tbyrne and still they look BRAND NEW

My vote is for SLP! They are a little harder to install... but I got mine on GP for 800bucks! NO cats also