986 Forum - The Community for Porsche Boxster & Cayman Owners - View Single Post - Optimum Back-Pressure for Exhaust Systems?

edevlin · 10-02-2006, 05:30 AM

Thanks for the input Jim, I was hoping you might have some ideas. I have tried to enclose a dyno readout, see what you think. I was hoping for a little more power with the mods in the system, but I dont think I need any more. The car sounds very good and seems to be running great.

The current custom tune of the ECU chip I am using makes the car very responsive, great low-end torque, perhaps at the expense of the maximum high-rpm hp. That combination makes it very fun to drive now.

I may have them massage the chip paramaters somewhat as the dyno readout shows the engine is running a little rich over 5k, but I will take a flat torque curve over a few extra hp at max rpm anyday,

Cheers,

Ed

2000 2.7L Boxster, 17"
Arctic Silver/Black 50K
TTP intake/headers/cats
AutoThority Chip

10-02-2006, 05:30 AM	#3
edevlin Registered User Join Date: Jul 2006 Location: Virginia Posts: 916	Exhaust Back-Pressure Thanks for the input Jim, I was hoping you might have some ideas. I have tried to enclose a dyno readout, see what you think. I was hoping for a little more power with the mods in the system, but I dont think I need any more. The car sounds very good and seems to be running great. The current custom tune of the ECU chip I am using makes the car very responsive, great low-end torque, perhaps at the expense of the maximum high-rpm hp. That combination makes it very fun to drive now. I may have them massage the chip paramaters somewhat as the dyno readout shows the engine is running a little rich over 5k, but I will take a flat torque curve over a few extra hp at max rpm anyday, Cheers, Ed 2000 2.7L Boxster, 17" Arctic Silver/Black 50K TTP intake/headers/cats AutoThority Chip