The GT3 gets dyno'ed after mods
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Joined: Sep 2003
Posts: 4,823
From: DFW, TX
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Juan!!
Great numbers on the GT3 man!! Are you going to the track Wed. night with Abid?? He just called and asked me if I wanted to bring the M5 out since its going to be so cold... Lets see if we can get an M5 into the 10's!!!!!!
Regards,
Evan
http://www.mufflex-performance.com/
(Last I knew)
Great numbers on the GT3 man!! Are you going to the track Wed. night with Abid?? He just called and asked me if I wanted to bring the M5 out since its going to be so cold... Lets see if we can get an M5 into the 10's!!!!!!
Regards,
Evan
(Last I knew)
Registered User
Joined: Aug 2007
Posts: 112
From: San Diego
Rep Power: 23
Dyno Results
First allow me to apologize, I could not get color when scanning the dyno graphs.
The two lower curves are hp and the two upper curves are torque. The lower curve of each pair is are the stock results and the upper curve of each pair are the results w/ FVD headers.
Stock = 363.3 rwhp //// Mod. FVD = 383.5 rwhp
http://picasaweb.google.com/whitneyd.../DynoResults03
View it in the slideshow, it projects larger.
Between 3300 to 5400 rpm is the real substance of the headers. There are hp gains of 25 t0 30 rwhp and 35 to 40 ft/lbs of torque.
Peak was a 20 rwhp and 10ft/lbs torque.
Several runs were done but with the increasing engine temp the results were becoming affected. It's hot down here.
Now to the Dymags, a topic that's awaited. Well let me tell you the results were a disappointment. The Dymag rep from California was there at Champion when we dyno'ed. We dyno'ed with the Dymags on and the results were as shown. Then we took off the Dymags and put back the HRE 890R's that were on previously and the dyno results were the same. No measureably significant hp difference. Many runs were done but no need to show redundant results.
These headers/exhaust system sounds great and look well developed.
The total weight savings is 39 lbs. exactly. Removal of the side mufflers equals 42 lbs savings but you must take into account the difference in the weight of the stock manifolds vs. FVD headers.
A system saying they save 60 lbs. I do not believe it.
The rear center section is NOT a muffler as often called, rather it is a resonator.
http://picasaweb.google.com/whitneyd...63/DymagWheels
http://multimedia.fvd-web.com/FVD111...11199750RS.wmv
Gentlemen I love this exhaust, it works, sounds great and the price is better than ALL competitors. Right now the FVD race exhaust is $4,000.
The Supersprint header and exhaust system looks good but results are still unknown. Long pipes are not necessary good for making power. I guarantee you this will cost 8 - 10K. Lets see but my SS headers for the M5 without Cats was 7K.
The QuickSilver header system looks good but there is little info out.
I know of a forum member who installed this system and got good dyno results. I do not know the price of the QuickSilver headers.
Cheers gentlemen,
GT3Ranger...Juan
The Supersprint headers system looks good
The two lower curves are hp and the two upper curves are torque. The lower curve of each pair is are the stock results and the upper curve of each pair are the results w/ FVD headers.
Stock = 363.3 rwhp //// Mod. FVD = 383.5 rwhp
http://picasaweb.google.com/whitneyd.../DynoResults03
View it in the slideshow, it projects larger.
Between 3300 to 5400 rpm is the real substance of the headers. There are hp gains of 25 t0 30 rwhp and 35 to 40 ft/lbs of torque.
Peak was a 20 rwhp and 10ft/lbs torque.
Several runs were done but with the increasing engine temp the results were becoming affected. It's hot down here.
Now to the Dymags, a topic that's awaited. Well let me tell you the results were a disappointment. The Dymag rep from California was there at Champion when we dyno'ed. We dyno'ed with the Dymags on and the results were as shown. Then we took off the Dymags and put back the HRE 890R's that were on previously and the dyno results were the same. No measureably significant hp difference. Many runs were done but no need to show redundant results.
These headers/exhaust system sounds great and look well developed.
The total weight savings is 39 lbs. exactly. Removal of the side mufflers equals 42 lbs savings but you must take into account the difference in the weight of the stock manifolds vs. FVD headers.
A system saying they save 60 lbs. I do not believe it.
The rear center section is NOT a muffler as often called, rather it is a resonator.
http://picasaweb.google.com/whitneyd...63/DymagWheels
http://multimedia.fvd-web.com/FVD111...11199750RS.wmv
Gentlemen I love this exhaust, it works, sounds great and the price is better than ALL competitors. Right now the FVD race exhaust is $4,000.
The Supersprint header and exhaust system looks good but results are still unknown. Long pipes are not necessary good for making power. I guarantee you this will cost 8 - 10K. Lets see but my SS headers for the M5 without Cats was 7K.
The QuickSilver header system looks good but there is little info out.
I know of a forum member who installed this system and got good dyno results. I do not know the price of the QuickSilver headers.
Cheers gentlemen,
GT3Ranger...Juan
The Supersprint headers system looks good
Thread Starter
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Banned
Joined: Jul 2007
Posts: 3,121
From: Miami,FL
Rep Power: 235
Responses:
ze shark : The Dymag wheels w/ their extremely lightweight help in all components of motorsport movement. The greatest positive effect I am experiencing is in the braking. It now takes so much less effort to slow the car and the brake pedal pressure is less because the rotating mass is so much less. The same principles apply to the cars' acceleration and overall handling. Wheel weights is very important especially when the weight difference is so great.
The stock rear wheels (19x12) weigh 31.7 lbs. The Dymag wheel (19x12) weighs 18 lbs. That's a 13.7 lbs difference and considering the unsprung weight equation which states each pound requires 3 times in weight effort. Hence the weight saved between the wheels translate to 13.7 x 3 = 41.1 lbs of unsprung weight saved per each side in the rear. The front stock (19x8.5) wheel weighs 26 lbs. The front Dymag (19x9) weighs 16 lbsThe difference is 10lbs. That's 10 x 3 = 30lbs per each side in front.
Total unsprung weight savings:
rear = 41.1 x 2 = 81.2 lbs.
front = 30 x 2 = 60 lbs.
cdaniels : You are absolutely correct about hot weather. The ambient temperature has alot of bearing on the dyno results. Hot humid weather is a killer of dyno performance. I would have loved to dyno in colder weather but this will not happen soon in South Florida.
The RS wing / decklid is an OEM part ordered from Porsche. I heard that they are back ordered and due to the weaker dollar the wing price has gone up. I agree it is a better looking wing than the GT3 stock wing.
Cheers and happy New Years,
GT3Ranger
ze shark : The Dymag wheels w/ their extremely lightweight help in all components of motorsport movement. The greatest positive effect I am experiencing is in the braking. It now takes so much less effort to slow the car and the brake pedal pressure is less because the rotating mass is so much less. The same principles apply to the cars' acceleration and overall handling. Wheel weights is very important especially when the weight difference is so great.
The stock rear wheels (19x12) weigh 31.7 lbs. The Dymag wheel (19x12) weighs 18 lbs. That's a 13.7 lbs difference and considering the unsprung weight equation which states each pound requires 3 times in weight effort. Hence the weight saved between the wheels translate to 13.7 x 3 = 41.1 lbs of unsprung weight saved per each side in the rear. The front stock (19x8.5) wheel weighs 26 lbs. The front Dymag (19x9) weighs 16 lbsThe difference is 10lbs. That's 10 x 3 = 30lbs per each side in front.
Total unsprung weight savings:
rear = 41.1 x 2 = 81.2 lbs.
front = 30 x 2 = 60 lbs.
cdaniels : You are absolutely correct about hot weather. The ambient temperature has alot of bearing on the dyno results. Hot humid weather is a killer of dyno performance. I would have loved to dyno in colder weather but this will not happen soon in South Florida.
The RS wing / decklid is an OEM part ordered from Porsche. I heard that they are back ordered and due to the weaker dollar the wing price has gone up. I agree it is a better looking wing than the GT3 stock wing.
Cheers and happy New Years,
GT3Ranger
Thread Starter
|
Banned
Joined: Jul 2007
Posts: 3,121
From: Miami,FL
Rep Power: 235
Hey Evan how are you? Yes Abid called me today and YES I plan to go Wednesday next week. I have to work, being on call but I will move heaven and earth to switch w/ my partner so I can be there.
Yes we need to try and get the first E60 M5 in the 10's in the 1/4 mile. That is a great thought and accomplishment.
Abid mentioned about getting drag radials. I know Hoosier makes competition tire in 19". They are almost like slicks. Consider a 295/30/19.
Take care and see you next Wednesday.
Juan
Yes we need to try and get the first E60 M5 in the 10's in the 1/4 mile. That is a great thought and accomplishment.
Abid mentioned about getting drag radials. I know Hoosier makes competition tire in 19". They are almost like slicks. Consider a 295/30/19.
Take care and see you next Wednesday.
Juan
Thread Starter
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Banned
Joined: Jul 2007
Posts: 3,121
From: Miami,FL
Rep Power: 235
Hey Steve this maybe a stupid question but there are a heck of alot of HRE wheels around your GT3RS. Are you HRE? I run HRE's on my cars, my personal opinion is they are the best. The Dymags due to their unique design I had to get but that was not my norm. Still waiting for the M5 wheels. Ben at Wheels Botique is a great friend.
I can't wait to get the GIAC software for the GT3. Champion Motorsport will be following up for me. Hope to also get this mod for the GT3RS but that car is presently stock.
Happy New Year,
Juan
I can't wait to get the GIAC software for the GT3. Champion Motorsport will be following up for me. Hope to also get this mod for the GT3RS but that car is presently stock.
Happy New Year,
Juan
Registered User
Joined: Aug 2007
Posts: 112
From: San Diego
Rep Power: 23
HRE Wheels
Juan, I think you got it. Your last post was excellent. Hopefully those of us who have been around motorsports for many years, can pass our knowledge down to others. We are a real brotherhood, bound with a passion for fine automobiles and performance. It's a pleasure working with you after a rocky start ! Yes I was at HRE for those pictures. I am fortunate to live and work 25 miles from them. They share our passion for cars and are the finest bunch of car guys I know. I make my new model cars available to them for fittments. They are just about finished with a new comp.wheel design for my CLK-63 Black. Happy New Year and Be Safe ! Steve
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