GHL TB vs Vibrant TB

[terbow]

I didnt know the GHL was 2.5 where the resonator was. Thats pretty lame. I just dont agree the vibrant would produce better gains while still using the stock s-pipe. I would agree however if a different s-pipe was installed with the system. There has got to be some dyno evidence somewhere.

i understand, if u get rid of the resonator then ok id agree. but by having a bottleneck your effectivly making the exhaust 2.5". plus no ones done any testing on divided vs non divided s pipes. so maybe having a ported or corksport s pipe actually would yield better gains since its just an open space for it to flow whereas the divided one has 2 smaller paths (i doubt the turbulence on a t25 internal gate warrants a split pipe)(as you stated).

i was just giving my unbiased opinion on the experience i had with both. they are both the best solutions we have for 3" packages. I would certainly like to see a 3" downpipe thats not divided going to the vibrant as i feel that would be the best but its probably not worth the time.

 

[terbow]

Keep in mind the Vibrant is a 2.5 at the s-pipe and then turns into a 3in. And Im not sure if you guys remmember but Rich gained 14whp when he sintalled the MAM 3in s-pipe, but he was running a gt28rs.

right. bigger is always better there, but we dont have any true 3" open downpipes. thats where the biggest gain is. the ghl is divided so its not going to flow like the mam one.

anything is better than stock however.

 

[terbow]

I didnt know the GHL was 2.5 where the resonator was. Thats pretty lame.

i actually have a pic of it. ill see if i can dig it up. problem is, if you remove it, its really loud. and if u have to get ur own 3" one, then its even more cost.

 

[MSP608]

whats wrong with your current exhaust setup John? looking for a 3"? i say go vibrant. other than getting it to fit up with the stock s pipe i have had zero problems. dont think its been mentioned yet but the o2 doesnt have to be extended you can just reroute it and it will reach just fine.

i could help you with install if youre coming back to cville.

 

[alexB]

I currently have the full GHL 3'' TB exhaust. I love it but I will admit that it was very expensive. No doubt. After installing this myself I will say that I feel like the stock s pipe/downpipe looks to be the MOST restrictive part on the MSP exhaust. If I was to do this again I would take a different route. Maybe the GHL down pipe setup($600ish) into a like a QTP electronic cutout. And maybe a diiferent muffler or exhaust tip if you are worried about the looks part.

When I wanted performance open up the cutout. The muffler would give it the whole aftermarket look. Also with the down pipe and muffler the sound would be different all the time but still bareable. Not too loud.

 

[yashooa]

You will have to pry my GHL from my cold, dead hands
I think the GHL is of the utmost quality as well as the Vibrant.
I really like the downpipe and now that I am going forged with 20PSI I will be very glad to have it.
The stock S-pipe is a restrictive P.O.S. IMO
http://www.msprotege.com/members/yashooa/trans 085.jpg

 

[Pirana]

Guys, even thought the GHL does have a divorced wastegate runner...its not a true unrestricted downpipe. I would like to see a good picture of the bellmouth. That looks like a very small pipe going into the turbo exit. Unless you are running in excess of 18psi there wont be much difference between the MSP and the GHL pipe. Juan at Hiboost proved it. He didnt see any gains when he build the prototype. So he scratched the idea. If you are running a bigger turbo and lots of boost, then yes a divorced runner would be beneficial. Not in our OEM application.

 

[carbonkid]

Wow, all great input. I am glad I asked.

Sounds like they are both great solutions, and it just comes down to individual preference for hardware/looks, as the performance differences are negligible (< 5hp). IF we are talking the use of 'band/360* clamps' for the GHL, then I had horrible luck with band clamps on my old SVT Contour SHO-SHOP exhaust (*flashback*) and will probably go Vibrant.

MSP608,
Yeah bro, I just want to try something different. Thanks for the labor offer, and I will be back to C'Ville towards the fall. Anyway, I paid off the car while here, and am allowing myself a little bit of "MSP play money" since a few $K is still a LOT cheaper than a new 335i. LOL! Plus, I am totally still in LOVE with my MSP, 4 years later...(if only I could meet a woman where I say the same thing) *sigh*

Anyway, I am thinking:
-Vibrant/Corksport S (based so far on what I have read here)
-SMIC/hardpipe upgrade from OEM
-EBC slotted/drilled/Yellows at all 4
-opened up IM
-Unichip

Drumfreak:
Maybe I can go for a ride in yours when I get back to MN...I am sure I will like the GHL too.

 

[Pirana]

Looks like you will be running a pretty good set up there...I might suggest (unless you already have one) a good boost controller...HKS, Greddy, Blitz, etc...

 

[Drumfreak]

Sounds good man. Too bad I'm going back to stock boost and selling my ebc so my car wont be quite as quick. Let me know. I would be willing to make some time and meet up.

 

[Jeff@Tri-Point]

This was differences before and after the Corksport S-pipe and Crank Pulley. The light green and dark green are horsepower numbers, use the #'s on the right. Dark blue and light blue are stock boost level changes, use the #'s on the left.

I don't know how much the pulley had to contribute but you can see even at stock boost levels, they were flowing more. Don't concentrate on peak horsepower, look at what it did through out the powerband, you could only imagine with more boost, im sure it will make a huger difference on peak horsepower...

 

[kamon8404]

Thats a definite improvement.

 

[carbonkid]

Indeed...

Drumfreak, can you email me pics of your EBC? thx

 

[sandspeed]

I have never seen a vibrant but I know from reading around here it is a great exhaust system. I do have a ghl full downpipe on the car and love it. I would get the vibrant if you don't plan on heavily modding your speed.

 

[Drumfreak]

Indeed...

Drumfreak, can you email me pics of your EBC? thx

PM me your email and I will see what I can do.