To answer your questions:
#I have not talked with Rhonda (FVD) for a few month now but my last talk with her, she told me that they will not represent Akrapovic after all even though I bought the complete Akrapovic system from them (FVD). They may have changed their business strategy and now represent Akrapovic again, that would be great, my experience with them was superb.
#Sorry, I don't understand these two questions:
Looking at the collectors the design is ?
They have the bung on the cats?
#The whole system as installed weighs 31 lbs, I believe the first picture shows my system on a yellow blanket, this is the way I weighed it, turned it vertical and balanced it on a scale with one finger so as not to influence the reading.
#I was told the complete stock exhaust weighs about 90lbs, mine weighs as stated 31lbs, makes a difference of about 60lbs, I did not weigh the individual parts of the Akrapovic or the stock system.
#Wolfgang Dietz from Akrapovic recommended to tune the ECU on a dyno, I will do that within the next three month, I can then write another report and update all of you
#Which headers did the car come with? Sorry, I do not want to disrespect any company hence I do not want to mention manufacturers. Anyway, what works for some does not work for others and I believe different headers for different applications. Possibly short and tight road courses would benefit long tube headers (more torque in the midrange, hence better acceleration out of the tight turns) and fast race courses with high speed turns would benefit short tube headers due to exiting in higher rpms. This is just a guess on my part, I am not an expert whatsoever!
#3x60lbs: I just quoted Wolgang Dietz who runs the Akrapovic race team in Europe, he talked to Manthey and was given this information. I think what Manthey was referring to is the 60lbs times the distance to the rear axle between 2' and 3' will result in an effective weight which is about 3 times as much under lateral acceleration. The scientists could jump in and enlighten us all in this subject.
#I think the system cost is between $10k and $14k depending on the exchange rate and incentives the company will give at the time of order.
I hope to have answered all your questions!
Quote:
Originally Posted by GT3Ranger
Hey Md11skipper glad to read you're happy with the system.
A couple questions though.
Reading your write up I do not understand what happened with FVD? What exhaust system did they not go through with or dropped?
Looking at the collectors the design is ?
They have the bung on the cats?
The entire system, headers, tubes, cats, rear center muffler / resonator and tips all weigh 31 lbs?
How does it save 60 lbs? Deleting the OEM side mufflers = 42 lbs.
How much does each header bank w/ cat weigh?
Did you do an ECU tune to compliment the headers / exhaust system?
You stated the RS had aftermarket long tube headers when you bought it. Just currious, which headers were those?
btw the comment about 3 times weight savings with "g force' turns is not valid. The 3x's rule applys to the equation of unsprung weight and rotating mass.
Nice road you have there to do your runs. 
Also btw did you do stock and post Akrapovic install dyno's?
You have to dyno.
One final question. Cost of the system. If you like PM me.
Enjoy the system and best of luck.
Ranger |