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Just because your Dyno did not go below 3k does not mean your engine will never operate below that. I dive in auto when the engine is cold and into and around town. It often runs at 2k and sometimes a little below.
I applaud you for all the work you did in choosing an exhaust and been a great source to all of us here; however engine construction, intake and exhaust systems have an effect on engine operation. Porsche has put more effort into design and development of the whole engine, and the intake and exhaust systems are a big part of this. Part of Porsches goals were to create an engine that was able to serve race duty while being able to also operate very well on the street by expanding the power curve. Like it or not most after market exhaust manufactures chose to only do the rear bypass and leave the valves for a reason.
+ 1M
the valves open and close ~sometimes partially~ dependent on countless factors with one or more goals being to retain and/or improve torque. dynos will not tell the whole story. the results can sometimes be misleading and can be manipulated. partial throttle applications and undulating terrain can alter the need for varying excavating exhaust gases; hence the need for the varied valve exhaust valve openings. as intake velocity and intake runner length may contribute to torque and hp, so may exhaust gas velocity. bigger is not always better; i could, but wont go there... Sharkwerks, i.e. offers their proprietary bypass with similar i.d. tubing to stock for a reason.
the torque loss is likely there above 3k rpm as well. i would guess as the manual reads. i find it difficult to believe eliminating these valves improves torque.
if one always drive above 5k, or just like the sound with the valves open, great. i won't pretend it's otherwise.
I apologize. My intent is not to hurt any feelings. It's my opinion.
For $500 I would be ok with the presentation, quality, and fitment. At $1500 it should be impeccable. When opening a Sharkwerks box, what I perceived as a high quality brand, I would expect a great presentation whether or not it will be seen on the car. Take Cobb Tuning's exhausts. They have good presentation as well as good quality even on low volume parts.
If a high quality method is used to cut thin steel flanges they still look like thin, slightly wavy, steel flanges. Again, if this was going on a Mazdaspeed 3 for $500 I would have a different opinion.
The fitment was just ok. Once again I have high standards for the price and perceived high end branding. Talking to a tech who has installed a few of sharkwerks bypasses he said something along the lines of "the fit is not that great for what it is".
All I'm saying it there is room for improvement without a MSRP price change that would positively affect the brand. You can pay Wolf/Subzero prices for Kenmore and be happy. For me I expect something well done for the cost and especially from a brand image I respected.
I apologize. My intent is not to hurt and feelings. It's my opinion.
For $500 I would be ok with the presentation, quality, and fitment. At $1500 it should be impeccable. When opening a Sharkwerks box, what I perceived as a high quality brand, I would expect a great presentation whether or not it will be seen on the car. Take Cobb Tuning's exhausts. They have good presentation as well as good quality even on low volume parts.
If a high quality method is used to cut thin steel flanges they still look like thin, slightly wavy, steel flanges. Again, if this was going on a Mazdaspeed 3 for $500 I would have a different opinion.
The fitment was just ok. Once again I have high standards for the price and perceived high end branding. Talking to a tech who has installed a few of sharkwerks bypasses he said something along the lines of "the fit is not that great for what it is".
All I'm saying it there is room for improvement without a MSRP price change that would positively affect the brand. You can pay Wolf/Subzero prices for Kenmore and be happy. For me I expect something well done for the cost and especially from a brand image I respected.
Hey your allowed your opinion and I respect it. I'm certainly not paid by SW to promote products its simply an experience thing for me. You say the tech said "the fit is not that great for what it is"? What is it other than a simple thin walled pipe that eliminates 16lbs of unwanted factory center muffler? What was wrong with your fitment that made it "not that great"? It's very adjustable/movable to get mounted in correct position and in installing multiple units myself I'm not sure how it could fit better? I've seen a GMG install and I see no better fitment for the money they charge? No worries either way as one needs to pick the sound they want and go for whatever brand you want but absolutely nothing wrong with the SW product.
BTW...Cobb tuning is great and nice looking but just 1 of those pieces looks to weigh what entire SW bypass weighs?
the valves open and close ~sometimes partially~ dependent on countless factors with one or more goals being to retain and/or improve torque. dynos will not tell the whole story. the results can sometimes be misleading and can be manipulated. partial throttle applications and undulating terrain can alter the need for varying excavating exhaust gases; hence the need for the varied valve exhaust valve openings. as intake velocity and intake runner length may contribute to torque and hp, so may exhaust gas velocity. bigger is not always better; i could, but wont go there... Sharkwerks, i.e. offers their proprietary bypass with similar i.d. tubing to stock for a reason.
the torque loss is likely there above 3k rpm as well. i would guess as the manual reads. i find it difficult to believe eliminating these valves improves torque.
if one always drive above 5k, or just like the sound with the valves open, great. i won't pretend it's otherwise.
Sharkwerks stands behind their product. Its not only what you buy, its who you buy it from.
^^this. Alex/James/Dan are awesome! Best customer service I have ever experienced in the automotive industry. Not just once. But so many times now I lost count.
^^this. Alex/James/Dan are awesome! Best customer service I have ever experienced in the automotive industry. Not just once. But so many times now I lost count.
I agree. I still think the SW bypass is the best overall solution for the masses. The GMG is better for the crazies.
08-11-2015, 06:57 PM
