Straight pipe out of Turbo
04-26-2005, 06:16 PM
#31
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Originally Posted by jhunt@huntinter
I found the dump pipe produced about 10hp LESS then a well designed muffler. This on my 450hp 390ftlbs 1979 930.
04-26-2005, 07:13 PM
#34
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Also, dynos are not so consistant so if the car was heatsoaked or the temp changed that can change the results... Driving on the road I can feel an increase in power and racing my friends I can see differences with and without the muffler.
04-27-2005, 02:27 AM
#36
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Originally Posted by AZ930
If this was the case in these cars Porsche would have used mufflers on the 934's.... 
True, but we aren't moving our fuel meters down to the turbo either. I would suggest that performance mods are fickle. Some seem to make sense... and may even work for some setups.. but not for all set ups. That said 10hp isn't much when you are pushing 450hp.
04-27-2005, 11:29 AM
#37
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I just installed mine last night & ditched my Borla muffler. Its a little louder than the Borla but it also got rid of the babbling sound that Borla makes which is good.
From seat of pants & memory, after not driving the car for 6 months now, throttle response is definitely improved; so as acceleration & boost build up. And the advantage of saving some pounds.
From seat of pants & memory, after not driving the car for 6 months now, throttle response is definitely improved; so as acceleration & boost build up. And the advantage of saving some pounds.
04-27-2005, 04:03 PM
#38
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Does anyone know how much a stock 76 euro muffler weighs? As I'm having my car repainted I'm thinking of having the exhaust cutout filled since I'll have the dump pipe. Or should I have a muffler shop fab me up a 3" stainless pipe that would come from the wastegate? I don't know what would look better. Any suggestions?
