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FLP Header or SLP ??????

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Old Aug 13, 2002 | 08:40 PM
  #1  
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Default FLP Header or SLP ??????

Is there any kind of dyno charts that compare the FLP with the SLP Headers and Exhaust? I have Borla catback and Im looking for the best system for my money. Bolt on and no welding is the option I am taking. If anyone has dyno charts of before FLP or SLP and after Header install I would greatly appreciate it. Thanks
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Old Aug 13, 2002 | 09:14 PM
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Default Re: FLP Header or SLP ?????? (bbjohn97)

Before you make a final decision on the investment of quality parts in your car I would also consider the other great header alternative from LGM. There are many good choices available on the market, but we belive our headers offer unsurpassed quality, performance, and support that we stand behind.
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Old Aug 14, 2002 | 01:13 AM
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Default Re: FLP Header or SLP ?????? (bbjohn97)

Dont know much about the SLP headers for the C5 but if they are anything like their FBody headers, i would stay away! far away!

the FLP's are the among the best header available for the vettes. we have seen as much as 21hp and 17trq gain on our dyno. no cutting or welding is required unlike most other brands.

LGs headers are definetly among the best, if not the best, but for the money, the FLPs are the way to go. i dont think there would be much difference in hp gains between the two brands of headers on a non head/ cam car. i know LGs would be the way to go on a big cubic inch or stroker motor. in fact, im planning on trying some on my 427 soon! hint, hint!

Nate
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Old Aug 14, 2002 | 07:53 AM
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Default Re: FLP Header or SLP ?????? (bbjohn97)

I can't say which is better SLP or FLP but I can can tell you that I am very satisfied with my set of FLP's... I did the install myself and the quality and workmanship is second to none. Along with the performance (seat-of-the-pants) barometer, the sound is aggressive combined with my Corsa Indy's. The high-flow cats are on my car as a reference... Good luck in your decision! :cheers:
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Old Aug 14, 2002 | 11:34 AM
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Default Re: FLP Header or SLP ?????? (Smoke-N-Shot)

Ditto on the FLP recommendation above. My '98 dyno'd the following improvements: 18RWHP and 20RWT @ peak...this was before Heads and Cam. The fit and sound are great. Good luck with your choices.
Joe
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Old Aug 14, 2002 | 03:06 PM
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Default Re: FLP Header or SLP ?????? (C54FUN)

We sell and install alot of the SLP f-body headers and haven't had any problems with the product. They just take a little while to come in sometimes. The first batch of these headers will be going out very soon so I'm sure there will be feedback posted in the next few weeks. I haven't seen a set of LG headers in person but have been told that they have a very nice product.

Tom
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Old Aug 14, 2002 | 03:22 PM
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Default Re: FLP Header or SLP ?????? (tbyrne)

I have also heard lots of good things about SLP on FBody. I am one of the pioneers trying SLP on the headers, so I will let everyone know once TBryne ships em out :)
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Old Aug 14, 2002 | 04:46 PM
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Default Re: FLP Header or SLP ?????? (Nate@xtreme)

the FLP's are the among the best header available for the vettes. we have seen as much as 21hp and 17trq gain on our dyno. no cutting or welding is required unlike most other brands.
Nate
Are the ~21/17 gains on bolt on cars (ie, cars with stock heads/cam)?
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Old Aug 14, 2002 | 07:10 PM
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Default Re: FLP Header or SLP ?????? (Godspeed)

Hey Godspeed... this wasn't a LG header post. :nono:
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Old Aug 14, 2002 | 07:14 PM
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Default Re: FLP Header or SLP ?????? (bbjohn97)

I just put FLPs on my car.
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Old Aug 14, 2002 | 07:14 PM
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Default Re: FLP Header or SLP ?????? (BADST C5)

FLP! Look at my RWTQ numbers and the few mods. The only power adders I have are FLP, Intake and blackwing really.
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Old Aug 14, 2002 | 08:13 PM
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Default Re: FLP Header or SLP ?????? (TexCorvette)

FLP

they support the forum :yesnod: and have a great product !!!

it is a COMPLETE system and i gained 19 rwhp and 11 rwtq OVER B&B shorties with cats

hope that helps
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Old Aug 15, 2002 | 11:43 AM
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Default Re: FLP Header or SLP ?????? (Ram Air Tony)

I've been very happy with my FLP's. I picked up approx. 20 rwhp and 20 rwtq. with them.

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Old Aug 15, 2002 | 07:29 PM
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Default Re: FLP Header or SLP ?????? (bbjohn97)

FLP is a great system. Here is what C54FUN got:

Before: 316 RWHP w/FLPs 334 RWHP= 18 RWHP Gain Before: 331 Torque w/FLPs 344 Torque= 13 lbs. Torque Gain For what is basically a stock motor, am impressed with the results.

Good luck.
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Old Aug 15, 2002 | 08:07 PM
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Default Re: FLP Header or SLP ?????? (Nate@xtreme)

Dont know much about the SLP headers for the C5 but if they are anything like their FBody headers, i would stay away! far away!

Nate
Nate, could you please explain. What was so problematic with the FBody versions??

Thanks,
Mike
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Old Aug 15, 2002 | 08:19 PM
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Default Re: FLP Header or SLP ?????? (Mikie C)

Nate, could you please explain. What was so problematic with the FBody versions??
I believe installing them is a pain in the neck on an f-body.

Eric
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Old Aug 15, 2002 | 09:13 PM
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Default Re: FLP Header or SLP ?????? (66ImpalaLT1)

Now the only question is what is the difference in price between SLP,FLP,and the LG ones? I had a set of SLP's for my 00WS6 and they were flawless in every way. Very nicely finished.Made one of the mustang guys in town go buy him a set of headers that looked very close in finish. Didnt get any dyno numbers out of them because I sold the T/A to buy the C5. But I would not hesitate to go back with the SLP's. I am looking into the FLP's now also. I was told the LG's are way to expensive. But I havent gotten a real price on them yet.
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Old Aug 15, 2002 | 09:17 PM
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Default Re: FLP Header or SLP ?????? (MY1Fast99C5)

Forgot to add what about the TPIS's? I had looked into these as well.
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Old Aug 15, 2002 | 09:36 PM
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Default Re: FLP Header or SLP ?????? (BADST C5)

Hey Godspeed... this wasn't a LG header post. :nono:
and you're help in Moderating is not appreciated, knock it off :smash:
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Old Aug 15, 2002 | 09:49 PM
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Default Re: FLP Header or SLP ?????? (bbjohn97)

I just installed a set of FLPs and I have no complaints, easy install and everything fit with no swearing or throwing tools around :). Finish was excellent, just wish they were stainless but thats life.

The only 'problem' with the SLP f-body headers was they were a b-i-t-c-h to install and SLP claimed like a 40hp increase which gave them a bad rap to begin with. I owned a set of f-body SLPs, they were a beautiful set of headers. The rusty mac 'cheapo' mid length headers on my old supercharged LS1 f-body worked just fine as well so I always hate to get involved in the grate header debates :) Honestly if the C5 SLPs were available when I was buying I probably would have tried them.

I will be dynoing my car next wendseday with FLPs, LS6 intake ad a vortex - we'll see...
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