Let us know if you ever need to change!
The goal is to have orders begin shipping by the week of 11/20/17.
Most of the time when you completely remove an exhaust there will be a loss of power, with no change at all then maybe a smoother flowing exhaust will make a few HP where removing it is a waste.......need to try some aftermarket exhausts when they arrive as the OEM is 2 inch.....just what I've run into in the past with other vehicles, this platform may be different
This is awesome. For future parts tests, would it be possible to do some pulls with and without ethanol mixed fuel? I'm definitely planning on upgrading with at least the FMIC and the Downpipe (w/ an e-Tune), but since this will be my daily driver and E85 is not readily available in my area, I'll likely just be running standard 93 octane. As psyched as I get seeing huge numbers like this, I'm also left wondering how much of this impact I'll end up seeing running 93.
Typically on a N/A platform this plays a big part, but isn't always the case on F/I setups. Post-turbine housing backpressure means restriction on a turbocharger. Ideally, pre-turbine gas is intended to be carried as much as possible, which is where turbine housing design comes into play. The larger the area of post-turbine exhaust, the more room exhaust gas has to expand. Hot gas has only one goal, to expand as quickly as possible. Energy dissipates as exhaust gas expands, so a larger exhaust will be more favorable. A larger diameter exit out of the turbine side, or downpipe, allows exhaust gas to exit properly at the high rate of speed, expansion and turbulance that comes out of the turbine. We are basically creating a pressure drop.
On 93 octane we acheived 235-240 whp and 290-295 tq, which isn't bad given the fact we still have our cat on the car. However, we were having some difficulty fighting knock control that limited overall power. If we can get past this the car has more left on the table. We mixed in some e85 to figure out whether or not fueling would improve knock control, which it did.
Yes, a catch can is in the works!
The wait is sooooo totally worth it! Love what you guys do...can't wait for my Cobra to be delivered and next spring looking to spring for your FMIC and downpipe\frontpipe!
