Cargraphic Headers. Whose got em?
05-15-2016, 01:17 PM
#31
One of the reasons I went with the FVD LT headers and cats with their valveless sound version exhaust is because they claim that you maintain and enhance the typical Porsche sound. I believe it because M&M makes the parts and they make they exhausts for the Porsche Cup cars. It is important to me to sound Porsche
05-15-2016, 01:31 PM
#32
Race Director
All of this is on order including tune. Should have everything in 3 weeks but then sending headers out to be Swain coated and the tips to be Ceramic Coated Satin Black. This also gives me some time to first break in engine. Figure everything will be done by end of June. I feel need at least 800 miles before swapping and then 500 miles on new set up and then we go "full throttle"
05-15-2016, 01:54 PM
#34
Race Director
You do not need a tune w/ cats. But - I believe John mentioned if you also add an exhaust you may need a tune because she may run too rich. The problem with running too rich is that it will severly shorten the life cycle on your Cats and since they are attched to the headers that is a big expense to replace. I am going to add the tune. Not concerned. My Dealership is fine with it but when they service just to remind them so they do not hook it up. If they have an ECU update they will advise and i will just restore original tune but the Tuner told me they would install any updates from Porsche so no need for them to access my ECU- I really have no concerns. I have more of a concern with the Upgraded throttle body because it appears there is still more work to be done and hate to go in to the engine to install this. Bolt-ons i feel way more comfortable
05-15-2016, 03:33 PM
#36
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05-15-2016, 11:45 PM
#38
+1
Here are the options:
Fabspeed - notice the tubes take a very direct path to the collector, and are much shorter as a result. They show good gains, so the design is efficient and is a great option.
Attachment 1051062
The Car graphics headers have longer tubes that merge onto the cat. Longer tubes give you better scavaging, which helps the engine breath better at certain RPMs, but it has to be tuned correctly, and tends to be give back peaks of torque at the RPMs it was tuned for.
Attachment 1051063
GMG has a similar design, but different length, so different tuning.
Attachment 1051064
Finally no Cats on these Car graphic race headers....
Attachment 1051065
Here are the options:
Fabspeed - notice the tubes take a very direct path to the collector, and are much shorter as a result. They show good gains, so the design is efficient and is a great option.
Attachment 1051062
The Car graphics headers have longer tubes that merge onto the cat. Longer tubes give you better scavaging, which helps the engine breath better at certain RPMs, but it has to be tuned correctly, and tends to be give back peaks of torque at the RPMs it was tuned for.
Attachment 1051063
GMG has a similar design, but different length, so different tuning.
Attachment 1051064
Finally no Cats on these Car graphic race headers....
Attachment 1051065
05-15-2016, 11:49 PM
#39
Anyone seen dyno charts for either the Cargraphic or FVD sports headers? (with no other mods).
Next request would be dyno chart of Cargraphic / FVD sports headers with tune.
For those wanting the Cargraphic headers in this thread, on what basis are you wanting to buy them? I would want to see the dyno graph to see how they affect the power/torque delivery.
Next request would be dyno chart of Cargraphic / FVD sports headers with tune.
For those wanting the Cargraphic headers in this thread, on what basis are you wanting to buy them? I would want to see the dyno graph to see how they affect the power/torque delivery.
05-16-2016, 08:40 AM
#40
Rennlist Member
I'm heavily considering Cargraphic race headers because the design incorporates a slip fit collector that takes stress out of the system, and BGB was instrumental in improving the design from use in their racing program.
So race tested.
Still interested in what Dundon comes up with though.
So race tested.
Still interested in what Dundon comes up with though.
Last edited by d00d; 10-28-2017 at 06:27 PM.
05-16-2016, 02:43 PM
#42
Rennlist Member
05-16-2016, 08:41 PM
#43
Burning Brakes
I'm also interested in headers w/cats to pair with the stock PSE...but, I will likely be waiting a bit before doing so.
Any reason there isn't more love for the GMG headers? They look beautiful.
Any reason there isn't more love for the GMG headers? They look beautiful.
05-16-2016, 09:28 PM
#44
I looked into them, too, I like the smooth transition out of the cats and the merge collectors, but there is a lot less information and development around them. BGB has been putting the Cargraphics on a lot of cars and that is partially why there is a lot of attention focused on them. (BGB was doing 3.8l swaps into 987/981s long before Porsche sold cars like that)
05-17-2016, 08:07 AM
#45
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Whoa...this thread has some momentum. I've read through some of the replies. THANK YOU guys so much for the positive feedback. What can I do to help? In-car video of my GT4 on the way to work so you can hear the sound? What else can I provide?
What do we want? Drive by video? Give my girl a chance to audition for you! Everyone says she's the best sounding Porsche they've ever heard. To reiterate, I've got race manifolds and PSE but this is a track only car and really doesn't get driven on the street, which is why she has the race manifolds.
What do we want? Drive by video? Give my girl a chance to audition for you! Everyone says she's the best sounding Porsche they've ever heard. To reiterate, I've got race manifolds and PSE but this is a track only car and really doesn't get driven on the street, which is why she has the race manifolds.
Last edited by BGB Motorsports; 10-11-2016 at 01:00 PM.