Finally got my MAM tubular manifold installed. Some outstanding technical issues that I have contacted Beau about and am awaiting his response on. However, I have some initial comments on the performance although I have not yet had the car dynoed (I'll wait until Beau has dealt with the technical stuff before I pay for the dyno time).
First, definite difference in mid- and hi-range power. Not much change at the low end though. This is even with stock boost.
Second, the EGT values are down quite a bit. Across the range, temps are down by about 200 degrees. Consequently, the engine RPM seems to be down a bit when cruising. Previously, at approx 130 km/h my EGTs were around 1130 degrees F, and my engine ran around 3600 RPM. In the city when just driving around normally, EGTs were around 950 degrees F.
Now, at 130 km/h the EGTs rest around 950-1000 degress F (RPM around 3100), while in the city around 750 degrees F. Moreover, my gas mileage increased by about 10% with the manifold. For this I am pleasantly surprised as I was not expecting these results. I imagine that it is all a function of decreased resistance to exhaust flow, which means more flow to the turbo and throughout the exhaust system with decreased temperature increases since the turbo works less hard to accelerate and compress the air flowing through it.
I suspect that once Beau takes care of the outstanding issues, the results will be evern more favourable, but I will have to report back on that later.
R
First, definite difference in mid- and hi-range power. Not much change at the low end though. This is even with stock boost.
Second, the EGT values are down quite a bit. Across the range, temps are down by about 200 degrees. Consequently, the engine RPM seems to be down a bit when cruising. Previously, at approx 130 km/h my EGTs were around 1130 degrees F, and my engine ran around 3600 RPM. In the city when just driving around normally, EGTs were around 950 degrees F.
Now, at 130 km/h the EGTs rest around 950-1000 degress F (RPM around 3100), while in the city around 750 degrees F. Moreover, my gas mileage increased by about 10% with the manifold. For this I am pleasantly surprised as I was not expecting these results. I imagine that it is all a function of decreased resistance to exhaust flow, which means more flow to the turbo and throughout the exhaust system with decreased temperature increases since the turbo works less hard to accelerate and compress the air flowing through it.
I suspect that once Beau takes care of the outstanding issues, the results will be evern more favourable, but I will have to report back on that later.
R
