Pairing Full length catless LT's Headers to factory/aftermarket catbacks? - Pontiac G8 Forum: G8 Forums - G8Board.com
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post #1 of 14 (permalink) Old 06-30-2017, 02:31 PM Thread Starter
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Pairing Full length catless LT's Headers to factory/aftermarket catbacks?

Hey guys I've been up and down about headers on my g8 and have narrowed my choices down to what will suit me best. I currently have 2.5 borla cat back system installed and need to know the most cost effective and easy way of getting long tubes to fit my cat back.

I've ruled out kooks mids, slp lt and the cheap manzos and pypes. As of right now DT lt's, pacesetter and TSP headers seem the best for me.

Im leaning to The TSP headers due to their stainless steel construction, primary size and the fact they can sell me just the headers without the mid pipe for 500$. I'm curious to see if the Pacesetters LT extensions 82-1168 can be used to pair the borla without having to hack or cut anything. Has anyone seen or have done this as a way to this?
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post #2 of 14 (permalink) Old 07-01-2017, 06:59 AM
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I build headers as a side business and for the money and quality kooks are the way to go,, I bought a set and they went in with ease ,, for a mass production part it is real nice ,,, I couldn't build them for the money
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kook 1 7/8 long tubes, ls3 cam,dod delete,tuning school transmission tune,cai,corsa exhaust,lowered 1",staggered wheel set 19x8.5 19x9.5 breyton gts av,3.45 gear ,BMR rear control arm/w poly bushings
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post #3 of 14 (permalink) Old 07-02-2017, 10:45 PM
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Kooks won't line up with the Borla though, you'd have to mod the front section of the exhaust.

Matt Jones
2009 WH G8 GT Vararam/Kooks LT's/Corsa/BLP Probationary LL 219/223 .612/.615 112LSA/3.45s
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post #4 of 14 (permalink) Old 07-03-2017, 01:46 AM
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Oooooo man. This was one of the more frustrating parts of building my g8. I bought a solo performance catback, and then bought my headers later, not realizing how few *good* options there are to mate LT's to a catback system. I bought the kooks/solo connection pipes and they aren't great -especially since they're 3" and my catback was 2.5". I tried to adapt down on my own and it was crap. I contemplated switching to SLP LT's but couldn't give up my kooks so I ended up taking it to a well known exhaust shop who made me a custom mandrel bent mid pipe and it looks and works beautiful....but was also $400. So headers + custom mid pipe + catback = $2,000. But damnit does she sound like 'Merica.
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post #5 of 14 (permalink) Old 07-03-2017, 11:31 AM
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my cat back is a corsa so I fabricated 2 sets of connector pipes, one set with cats and one with out ,,, but kooks does offer pipes that connect to the corsa exhaust

kook 1 7/8 long tubes, ls3 cam,dod delete,tuning school transmission tune,cai,corsa exhaust,lowered 1",staggered wheel set 19x8.5 19x9.5 breyton gts av,3.45 gear ,BMR rear control arm/w poly bushings
12.86 @ 109.00 n/a
11.66 @ 118.79 boosted
LSA supercharger w/id 850 injectors,2 fan h/e 8lbs of boost
tune by gmonde performance
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post #6 of 14 (permalink) Old 07-08-2017, 07:22 PM
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I went with the SLP from Maryland speed. Fit together nicely.
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post #7 of 14 (permalink) Old 07-08-2017, 11:39 PM
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I have Kooks LTs with their catted connection pipes going into Corsa catback and everyone says it sounds the best. Fairly quiet if you baby the throttle. Loud when you want it loud.


2009.5 LR G8 GT
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GO: Roto-fab, Kooks LTs & H/F cats, Corsa, VMS.

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post #8 of 14 (permalink) Old 07-12-2017, 01:31 PM
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The only 2 on your short list that straight bolt up to the stock cat back are the DT's and the Pacesetters. No cats so you have to have them tuned out. Pacesetters can be ordered pre coated so they will last a bit longer.

'09 PBM GT. #2 Kook's Mids, Solo Mach balanced, SCT X4 Tuner. LED H/lamps, Tail lamps and Interior
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post #9 of 14 (permalink) Old 07-12-2017, 06:53 PM Thread Starter
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Found a sweet deal on some Pacesetters.450$ for coated LT ,connection and o2 exenstion
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post #10 of 14 (permalink) Old 07-13-2017, 09:21 AM
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Quote:
Originally Posted by Austinkd727 View Post
Found a sweet deal on some Pacesetters.450$ for coated LT ,connection and o2 exenstion
So you said in your OP that you don't want "cheap" Pypes headers but are buying really cheap pacesetters? Doesn't make sense to me. I believe you'll connection pipes for those too. My true pypes headers are stainless, the PS's are not. They also bolted up straight to my Borla midpipe without any issue and still make 400 wheel with a mild cam. They work just fine and the quality is good for a "budget" header.

2009 LR GT,Red/Onyx, Sport, Roof
Vararam, pypes headers, Borla X pipe, 2014 SS mufflers, Pat G custom cam, 3.45 Camaro diff, Powerhaus/ Sky tune
Koni yellows, H&R springs (cut dead coil), Polyelast strut bushings, BMR Toe Rods and Trailing arms, Whiteline radius rod, front lower control arm and rear cradle bushings, GXP Front Bumper and Diffuser,
Axis 18's, 255/40 (front), 275/40 (rear) Firestone Indy 500 Tires

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post #11 of 14 (permalink) Old 07-13-2017, 12:16 PM Thread Starter
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Originally Posted by JAYDBPR View Post
Quote:
Originally Posted by Austinkd727 View Post
Found a sweet deal on some Pacesetters.450$ for coated LT ,connection and o2 exenstion
So you said in your OP that you don't want "cheap" Pypes headers but are buying really cheap pacesetters? Doesn't make sense to me. I believe you'll connection pipes for those too. My true pypes headers are stainless, the PS's are not. They also bolted up straight to my Borla midpipe without any issue and still make 400 wheel with a mild cam. They work just fine and the quality is good for a "budget" header.
just decided to stick towards budget headers, but manzo and pypes just doesn't sell it for me. Pacesetters being the best choice. Full length runners and 3" collector. Steel quality doesn't concern me due to where I'm located.
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post #12 of 14 (permalink) Old 07-13-2017, 01:58 PM
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Quote:
Originally Posted by Austinkd727 View Post
just decided to stick towards budget headers, but manzo and pypes just doesn't sell it for me. Pacesetters being the best choice. Full length runners and 3" collector. Steel quality doesn't concern me due to where I'm located.
Didn't even think to look at your location...definitely the one downside to the pypes is that they neck down to 2.5 in the collector.

2009 LR GT,Red/Onyx, Sport, Roof
Vararam, pypes headers, Borla X pipe, 2014 SS mufflers, Pat G custom cam, 3.45 Camaro diff, Powerhaus/ Sky tune
Koni yellows, H&R springs (cut dead coil), Polyelast strut bushings, BMR Toe Rods and Trailing arms, Whiteline radius rod, front lower control arm and rear cradle bushings, GXP Front Bumper and Diffuser,
Axis 18's, 255/40 (front), 275/40 (rear) Firestone Indy 500 Tires

12.29 @ 114
1.9 60 ft
[SIGPIC][/SIGPIC]
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post #13 of 14 (permalink) Old 07-14-2017, 08:45 AM
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After installing over 6 different brands of headers on G8's, I hate to say the Pacesetters fit pretty nice and with their connector pipes bolt up to your factory cat back.

I have ARH on my car and they are 409 Stainless, 1 7/8", but I have their full catback to GXP mufflers and love the sound, but you will be at 2k when its all said and done.
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post #14 of 14 (permalink) Old 07-14-2017, 10:02 AM Thread Starter
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Quote:
Originally Posted by Strykerblue09GT View Post
After installing over 6 different brands of headers on G8's, I hate to say the Pacesetters fit pretty nice and with their connector pipes bolt up to your factory cat back.

I have ARH on my car and they are 409 Stainless, 1 7/8", but I have their full catback to GXP mufflers and love the sound, but you will be at 2k when its all said and done.
that's impressive lol. I've read only a few issue with their connection pipes being shotty when it comes to clamping then down on the collector.You think it'd be nessacary to weld them on instead of using the supplied clamp?
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