Thread: Time for some exhaust mods

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  1. #1 Time for some exhaust mods 
    SE Level Member Felix's Avatar
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    So, looking to get some headers. Most likely the SD ones since I heard they pretty much do the same job as the more expensive ones. I've heard about the downpipe being extremely low to the ground, my question is how low? Could anyone possibly post a picture on a GP? Also looking for a full catback exhaust. Could anyone possibly link me to where I can get the stock catback from? Does anyone know if the SD headers work with a ZZP DP?
    Plis Halp
    02 GP GTP "Delphene" in Redfire Metallic
    CURRENT - E85, AEM E85 Pump, 60# SD60, 3.4 pulley, ZZP DP, K&N CAI.
    NEAR FUTURE - 3.2/3.0 pulley, TEP HPS3 TRANS, ZZP 3in catback exhaust.
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  2. #2 Re: Time for some exhaust mods 
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    Quote Originally Posted by Felix View Post
    So, looking to get some headers. Most likely the SD ones since I heard they pretty much do the same job as the more expensive ones. I've heard about the downpipe being extremely low to the ground, my question is how low? Could anyone possibly post a picture on a GP? Also looking for a full catback exhaust. Could anyone possibly link me to where I can get the stock catback from? Does anyone know if the SD headers work with a ZZP DP?
    I'm looking for $350 for my SD Headers. Brand new with 0 miles on them! Not even. I have 3 coats of VHT 2000° Silver. Chipped paint is all because I bought the wrong headers. I have an 04 Pontiac Grand Prix Supercharged. Headers only fit 1997-2003 smh, rookie mistake!... Two 3 inch & two 2.5 clamps from ZZP. I have the SD gaskets but it's recommended to buy Felpro gaskets or GM Original... The V band clamp is not in the pic but it's included.

    FYI, the clamps that come with the SD Headers are for sure not recommended. Problems with leaks and deforming the shape of the headers. Definitely create problem if you want to take them off...

    As shown they're wrapped with with the high quality Titanium wrap, making the engine bay super cooler than usual, also keeping heat inside, making the headers seem longer and heat flow faster out. Wrap on the cross pipe will also kee the throttle body cooler. Included, the rest of the role of headrr wrap for the back header along with 6 stainless steel zip ties to finish wrap.

    As you can see, the paint is chipped and not cured or baked on the headers to keep header paint on. That's just ware and tare from trying to make them fit only to realize they're only for (97-03) GTP's, Buick & so on . As well, you can see that they're not used. An obvious shine of newness.

    I live in California and I'm looking for $350
    Everything is brand new!

    Shipping from California.

    Let me know?

    Sent from my SM-N950U using Tapatalk
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  3. #3 Re: Time for some exhaust mods 
    SE Level Member derpyimp's Avatar
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    I recently installed SD headers in my 04 GTP. I don't have pictures at the moment, but the bend on the downpipe doesn't sit terribly low. It is definitely lower than the stock downpipe, but only maybe an inch lower than the engine cradle. I haven't scraped it on anything yet after over a month. Installation was a huge pain due to rusted bolts and whatnot on the old exhaust coming out. Took me about ten hours in total, by myself.

    Oh, and the SD headers will not bolt up to a ZZP downpipe.
    '04 GTP Comp-G - 14.871 @ 93.30 (6600 ft DA) - 3.6 MPS, SD headers w/ high-flow cat, Gutted stock airbox, Transgo shift kit, AL 104s, 180 tstat, GMPP front sway bar, poly control arm bushings, Tune by Dyno Brian
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  4. #4 Re: Time for some exhaust mods 
    Killa Bee Scottydoggs's Avatar
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    those headers will fit, i know of many who have em. what part didnt fit right? you might have got a set with a poorly bent cross over pipe. be the only reason they dont fit.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  5. #5 Re: Time for some exhaust mods 
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    Quote Originally Posted by Scottydoggs View Post
    those headers will fit, i know of many who have em. what part didnt fit right? you might have got a set with a poorly bent cross over pipe. be the only reason they dont fit.
    Yeah, I tried everything. I'm based in California and no shop wants to touch them. And I can't find anyone who will. So tomorrow, I'm going to have one last go at it. Was told I'll need an o2 bung extension and to re wrap the headers a couple of inches away from the welds to prevent cracking. I'm going to give it one last go.

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  6. #6 Re: Time for some exhaust mods 
    Killa Bee Scottydoggs's Avatar
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    being your in ca, what you need to do is re use the stock cat to pass inspection, the in and out tubes need to be cut off then cut open to a 3 inch pipe size and welded in, so you can use the header dp.

    if the cross over pipe is the hang up its not bent right, would need a shop or some one who can weld and or bend pipe for ya to fix it.

    you need a o2 extension harness cause it gets moved lower. you also nee to hammer the fire wall so the o2 clears it.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  8. #7 Re: Time for some exhaust mods 
    GXP Level Member GTPpower's Avatar
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    I wish I could figure out how to sell something that does not increase performance and causes the owner nothing but headache.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  9. #8 Re: Time for some exhaust mods 
    GT Level Member Pursell1911's Avatar
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    Quote Originally Posted by GTPpower View Post
    I wish I could figure out how to sell something that does not increase performance and causes the owner nothing but headache.
    Lol, so you don't recommend headers?
    2006 Grand Prix GT - 3" Downpipe | DIY Intake
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  10. #9 Re: Time for some exhaust mods 
    GXP Level Member GTPpower's Avatar
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    Quote Originally Posted by Pursell1911 View Post
    Lol, so you don't recommend headers?
    Correct


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  11. #10 Re: Time for some exhaust mods 
    SE Level Member jaydubb71's Avatar
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    Get the headers.
    1998 GTP Coupe: Self-tuned with HPTuners, 3.4, FWI w/ 12 inch K&N, Autolite 103's, hot-wired FP, Caspers fan override, 180 t-stat, Speed Daddy headers, SLP exhaust w/ GTX tips, 12 inch brakes (Riviera/Impala), 6000K HID's, solid rubber engine and trans mounts, poly dogbone inserts (SOLD 3/2020!!! )
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