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 Write-Up: Installing SLP Exhaust Headers

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AA
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Fri May 14, 2010 10:38 pm

I used clamps to hold till I got to the muffler shop, then let them weld it in place for $20. They offered to do it for $15.

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'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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Abaddon
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Fri May 14, 2010 10:38 pm

Good point Rick (for VJ). I currently have no cat or rear O2, so the install should be easy.

1.) Put headers on...
2.) Drive to exhaust shop making excessive noise...maybe a couple extra laps...
3.) Have 'em make flange on existing pipe and bolt...
4.) Done!
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sun May 23, 2010 10:51 pm

So, I put the headers on yesterday. Took about 4 1/2 hours to do. It took me more time I think to demolish my trans dipstick tube......had to bend the hell out of it to get it in the hole so my trans doesn't leak until I get the new one. Also had to add about a 1-1/2' of wire to the O2 sensor harness so it could plug in.....

After I got the rear manifold off, I was happy to find that the engine had the good steel gaskets on it, and in great shape, so now I can return the ones I bought happy


IMO, the rear header was easier to remove than the front, mainly because of the accessibility from under the car. The front was a knuckle busting PITA. The studs on the passenger side are at a weird angle, and the socket kept wanting to slip off. All manifold studs, and the bolts holding the brackets on are 13mm, with regard to the EGR tube bolt and the trans dipstick hold down which are 10mm.
I was again impressed (and somewhat lucky), at how easily ALL the manifold studs came out.
I didn't take as many pictures as I wanted to because I was pressed for time. My boss let me use the shop after they closed, and he was kickin me out at 5. I just appreciate that he let me do it in the first place.....




The car didn't want to start at first, I think it was confused scratch
Once it started, I found that the EGR tube was leaking. I ended up cutting "that end" off the gasket of the gaskets that came with the headers....problem solved. After I fixed the EGR problem and got it runnin right, it smoked like crazy (which I expected). I followed the directions on the DEI header wrap paint can....let it warm up for 10 minutes, shut it down for 10, repeat. This was to properly cure the paint. Minimum cure temp is 400*, so the paint booth's 180* didn't cut it. After 24 hours, the smell is now gone....

The final result...
After resetting the fuel trims and driving to my buddy's shop to have the center pipe welded, I am extremely surprised to say that the headers are quieter than the stock manifolds were. I guess it's because of the wrap job (clap) and the better quality steel of the DP. All the sound is now out the back of the car. The tone changed as well. It's significantly louder at WOT, and the cruising drone got deeper and louder, which doesn't bother me. The power band is great, and the car gets moving it seems without hardly any throttle. It pulls, and it pulls hard(er) twisted
Last night, I just drove. This afternoon, I just drove. No plans, no destination, just the radio and my Riv with the new lungs wink.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Mon May 24, 2010 8:46 pm

I'm glad the install went well for you. Although I'm sorry you didn't pick up on the need to either buy an O2 extension harness (which I did) or have already made one to make the job go faster. I also had the luxury of buying a brand new dipstick tube and dipstick from GM prior to doing mine.
And you are able to validate what I've been saying since installing SSAC Headers on my car, that if wrapped properly they are QUIET and do not need anything more.
Although, I don't have any cruising drone at all.

Have you changed any part of the rest of your exhaust system aft of the Converter.???

I only installed the wrapped headers, downpipe and then installed the 3" Cat Conv. and welded to stock exhaust system. No highway or anytime drone.
Thankfully, cause i hate drone. That is what has stopped me from doing any additional exhaust mod's, is everyone talks of drone.
I like it quiet, unless of course I can hear the equivalent of a V8 muscle car from back in the day.
And we all know that ain't happening so I'll stick with what I have, short of installing some dual tips I bough almost 2 years ago.
Still need to cut my tailpipes and weld these in.
Anyway, congrat's on the successful install.
Rick
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Mon Jun 07, 2010 8:50 am

Sure glad I waited to get the trans dipstick nono . I think it was harder to get that stupid lil 10mm hold down bolt in than it was the rear header. The space between the rear pipe and the bolt is nil. Anywho, Morad had one for $15 shipped.....So now I spose the job is "complete".
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PostSubject: SLP Header Instillation Trouble   Fri May 18, 2012 8:41 pm

Hey everybody I'm in need of some help! Early this morning I started installing my SLP Headers and I ran into a bit of trouble with the O2 sensors.

When installing the rear header, I mounted the front O2 sensor in the correct location but noticed that it's about a foot short of reaching the other plug in. When I received my SLP header kit, I received an extension for the rear O2 sensor only. Is there supposed to be an extension for the front O2 sensor? Did they send me the wrong extension in the kit? I'd really appreciate your help. Thanks.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sat May 19, 2012 12:07 am

The included extension is meant to be used for the front O2 sensor, since many installations don't use the rear O2. You would only wire the rear O2 if you installed the optional high flow cat. Then you would need to buy an additional extension. The extension is made long, so it can reach either sensor.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sat May 19, 2012 2:03 am

The included extension only hooks up to the rear O2 sensor, not the front one. They have different ends on them. That's the problem.. The extension won't work with the front O2 sensor.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sat May 19, 2012 11:30 am

I used the extension for the front O2. I was able to use the stock wiring for the rear O2. The wiring should be the same.

I actually made my own extension.

But the rear O2 is behind the cat, which should not be changing location.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sat May 19, 2012 1:08 pm

I used the provided extension for my front O2. Rear O2 is not connected.

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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http://www.cardomain.com/ride/657082/4
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sat May 19, 2012 3:00 pm

I don't see how either of you used the extension for the front O2. If it's the same as mine, then it will only hook up to the rear O2.

They have completely different ends on them. The front O2 is flat four prong, while the back one is a square 2X2 four prong. The extension that came with my SLP kit is a square 2X2 four prong, and will only hook up to the rear O2 sensor.

This is what I've been trying to say. I need at least a foot long extension for the front O2 and it did not come with my kit. Only the extension for the rear O2 sensor was included, which I don't even need. Can I call SLP and just order a front O2 extension? I need help! I'm without my car until it's resolved.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Sat May 19, 2012 9:04 pm

I recall my front O2 sensor having a square plug. Maybe somebody changed that along the way?
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Nov 20, 2013 3:10 pm

96's have the narrow plug with all four wires parallel. The 97+ have the square plug. I did not read all 12 pages but was there any additional issues with fitment on the 96? ZZP website says " Not recommended for 97 GTs with the 460 transmission because of tight clearances." So will there be problems with the 96 which uses the 460 ? And are the ZZP headers the same as the SLP's?
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Thu Dec 12, 2013 7:21 pm

man I can't wait till I find someone worthy and realistic on prices too install my new parts man its h gone be a new feel
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Dec 18, 2013 10:18 pm

With the headers in the back is it hard to get too. Cause 400 dollars seems a bit stiff for an install with a shop
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 7:21 pm

Man wtf I went to everyone to try and get my headers put on they want to charge me 400 bucks and hold my car forever and a week I needs me a mechanic
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 7:29 pm

Many here have installed their own headers. If you don't feel it's something you can tackle, you're stuck with paying a shop. If they are all quoting about the same... that's likely the deal you'll find where you are. The cost is labor, it ain't cheap, and it's somewhat unpredictable if a shop hasn't done it on one of our Riv's before. They'll quote on the high side to cover if it takes longer than expected. Or, you could always ask for a time and materials job. But what's shop labor there? It can add up fast.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 7:35 pm

75/hour some are 100/hr I don't have the time to be laying on the ground but that's Louisa for ya they have no competition they charge on the high...everyone wants to take the motor out the car why
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 9:37 pm

That's about right. What's 6 hours of your time worth to you?

_________________
'98 SC Riviera 268k miles 298 HP/370 TQ 0-60: 5.79s ET: 13.97 @ 99.28 4087 lb 20.1 avg MPG Nelson Ledges Lap: 1:30
3.4" pulley AL104 plugs 180 t-stat FWI w/K&N 1.9:1 rockers OR pushrods LS6 valve springs SLP headers ZZP fuel rails
KYB GR2 struts MaxAir shocks Addco sway bars UMI bushings GM STB Enkei 18" EV5s w/ Dunlop DZ101s F-body calipers
EBC bluestuff/Hawk HP plus SS lines Brembo slotted discs DHP tuned Aeroforce Hidden Hitch


'05 GTO 49k miles 0-60: 4.8s 16.9 avg MPG Nelson Ledges Lap: 1:26
Because fun
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http://www.cardomain.com/ride/657082/4
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 9:41 pm

I work and go to school AA im just not seeing the luxury of six hours... that's trying too be greedy whats the easiest way to get the rears out ?
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 9:52 pm

Hey, spring break is coming up isn't it? That would be a great time for mods, especially if you could get a day or two off. Let me know when you get around to it, I might snag your old DP/cat from you.
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 9:58 pm

I dont have a down pipe or cat it's all str8 pipe im trying to get it done cause my inspection is up this month...being catless in Texas is 2Grand worth of fines
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 10:10 pm

Ah I see. I was just going off of your sig. Either way, I might still be interested in it since my car will be eligible for historic tags soon (no emissions or inspections needed).
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Wed Feb 05, 2014 10:14 pm

You have on board diagnostics systems in the car no matter how old the car might be
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PostSubject: Re: Write-Up: Installing SLP Exhaust Headers   Thu Feb 06, 2014 7:23 pm

Johhny5 have you fixed your other problems before you are going to introduce a new unknown to the equation? Sorry to have to ask but I haven't been able to keep track.
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