Is it worth adding headers only???
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 7,096
Likes: 153
From: "Atlanta" Ga.
Is it worth adding headers only???
Hey,
I am still working on my exhuast plan, it seems every time I get close I find out something else. I was going to go with Highflow cats but have decided against it.
I would like to keep my titanium exhust. What I am left with is SLP long tube Headers. I have to use these because they will not void my warranty.
Are HEaders only a good bolt on and worth the money???(also it wil be dynotuned again)
I have been told it may be quieter???
Please chime in even though this is the 1000th post on headers
Gonzo
Would I get more with just Borlas stingers??
I am still working on my exhuast plan, it seems every time I get close I find out something else. I was going to go with Highflow cats but have decided against it.
I would like to keep my titanium exhust. What I am left with is SLP long tube Headers. I have to use these because they will not void my warranty.
Are HEaders only a good bolt on and worth the money???(also it wil be dynotuned again)
I have been told it may be quieter???
Please chime in even though this is the 1000th post on headers
Gonzo
Would I get more with just Borlas stingers??
Burning Brakes
Joined: Mar 2002
Posts: 1,176
Likes: 0
From: highland village texas
Re: Is it worth adding headers only??? (Gonzo)
LT headers are nice, car will run better and there is some sound increase. Expect maybe 15-18rwhp...other makes (LG or Kooks) might actually get you more (?).
Burning Brakes
Joined: May 2003
Posts: 787
Likes: 0
Re: Is it worth adding headers only??? (C5 CU)
Not sure you'd get that much hp with just headers. Might need to have the exhaust to go with those headers to get those numbers. Though, I've been wrong before. :)
Burning Brakes
Joined: Nov 2000
Posts: 1,116
Likes: 0
From: Simi Valley CA
Re: Is it worth adding headers only??? (Gonzo)
In theory any modification at all designed to improve the power output the car can void your warranty. You can use non-oem replacement parts as long as they meet or exceed oem quality (like a K&N filter for example, and still have warranty coverage on the car (minus those parts). If the replacement part is found to cause damage they won't cover that damage though (i.e. K&N leaking oil on to the maf sensor). If you care about your warranty do not modify the car at all.
Having said that, these cars are pretty reliable so who cares about the warranty. Get some long tubes, high flow cats, and do a cam and ud pulley while you've got it apart! :)
Having said that, these cars are pretty reliable so who cares about the warranty. Get some long tubes, high flow cats, and do a cam and ud pulley while you've got it apart! :)
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 7,096
Likes: 153
From: "Atlanta" Ga.
Re: Is it worth adding headers only??? (Terry Burger)
In theory any modification at all designed to improve the power output the car can void your warranty. You can use non-oem replacement parts as long as they meet or exceed oem quality (like a K&N filter for example, and still have warranty coverage on the car (minus those parts). If the replacement part is found to cause damage they won't cover that damage though (i.e. K&N leaking oil on to the maf sensor). If you care about your warranty do not modify the car at all.
Having said that, these cars are pretty reliable so who cares about the warranty. Get some long tubes, high flow cats, and do a cam and ud pulley while you've got it apart! :)
Having said that, these cars are pretty reliable so who cares about the warranty. Get some long tubes, high flow cats, and do a cam and ud pulley while you've got it apart! :)
So Back to my question, I dont want any emmisions trouble so the stock cats stay, I like the Ti exhuast because its lighter and I dont want alot of noise, my last vette was loud and I'm getting older. So I am left with SLP headers.
Should I still expect 15 rwhp with dynotune??? if so isn't that more power than a cat back system would give me??
THanks GOnzo
[Modified by Gonzo, 7:35 PM 2/5/2004]
Supporting Vendor
Joined: Mar 2002
Posts: 2,073
Likes: 0
From: Loveland CO
Re: Is it worth adding headers only??? (C5 CU)
Yes, they are worth it. Depending on which header you will see a nice gain in performance. The sound will change also. You will be happy. Kaley
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Instructor
Joined: Sep 2003
Posts: 147
Likes: 0
From: mission b.c.
Re: Is it worth adding headers only??? (Gonzo)
i'm having slp headers installed at this moment w/slp hiflo cats. the headers are 3"outlet ,the slp hpipe for their cats 3" + the cats are 3". from there the stock pipe is 2 1/2" to the muffler connection (i'm replacing this w/3" pipe) my mechanic measured the hiflo magnaflow mufflers on my car @ 2 7/8".
i think that with stock 2 1/2' cats and stock pipes w/ 2 1/2" titanium mufflers you won't see too much of a power increase because of the stock size restriction.BTW the slp instructions quote 8.3 hrs just for header install. the mechanic has over 20 years experience and still not finished install w/cats after 11 hrs but they sure look good and fit perfectly in tight areas.should be finished Friday noon
i think that with stock 2 1/2' cats and stock pipes w/ 2 1/2" titanium mufflers you won't see too much of a power increase because of the stock size restriction.BTW the slp instructions quote 8.3 hrs just for header install. the mechanic has over 20 years experience and still not finished install w/cats after 11 hrs but they sure look good and fit perfectly in tight areas.should be finished Friday noon
Safety Car
Joined: Sep 2003
Posts: 3,558
Likes: 2
From: Cape Coral FL
Re: Is it worth adding headers only??? (Gonzo)
SLP headers are very good header. They are tuned length so there is little wave refelection, so they get very good power and very good torque. Your TI exhausts will work great with the package. They flow freely, are very light in weight, and sound really good. The only problem I see is in using stock cats. They will negate some hp and torque that the headers will give you. Why can't you use RT cats? I have them and they work fine, no OBDll codes at all. And I have around 3000 miles on them. They flow very free, sound really nice, and work just as well as the stock cats, especially if you have it tuned after the install. If you go with RT cats, put a good XPipe in as well. If you put LT headers in and leave the stock cats, I think all you will do is put a lot of heat into your engine compartment and into your interior without getting much hp/tq. :thumbs:
[Modified by ArKay99, 1:09 AM 2/6/2004]
[Modified by ArKay99, 1:09 AM 2/6/2004]
Thread Starter
Le Mans Master
Joined: Dec 2000
Posts: 7,096
Likes: 153
From: "Atlanta" Ga.
Re: Is it worth adding headers only??? (ArKay99)
Thanks Guys
I already have a magnaflow X-pipe, and plan on adding Koolsox on the spark plug wires and a heatmaster shield as well to keep cabin temps down.
What do you Think??? Still High flow cats???
Gonzo
I already have a magnaflow X-pipe, and plan on adding Koolsox on the spark plug wires and a heatmaster shield as well to keep cabin temps down.
What do you Think??? Still High flow cats???
Gonzo
Instructor
Joined: Sep 2003
Posts: 147
Likes: 0
From: mission b.c.
Re: Is it worth adding headers only??? (Gonzo)
Gonzo , i have the magnaflow xpipe cat back also but the slp hiflo cats won't fit the xpipe . the slp hpipe from the headers to fit the hiflo cats spreads the 2 cats too far apart . plus the cats are pushed about 8" further back at the rear connection . I am eliminating my xpipe and putting straight 3" pipes to my mufflers. the only alternatives are to order the slp hpipe from the hiflow cats to the magnaflow mufflers or cut your xpipe + modify it. need a tig welder because its stainless. hope this info helps
