Recent content by markmurfie

The shiny mark in the carbon patch seems like piston to valve contact. Maybe from valve float on a restricted exhaust manifold turbo application. This is a Whipple SC tho. Fragile hypereutectic pistons cant handle a light tap. JK Stretched a rod bolt first and this is aftermath. IDK.

"metal clunking noise every time I accelerate." Probably need a video with clear audio to understand what you are describing. Even then its gonna be tough to figure out as a microphone doesnt tell you from what direction this noise is coming from. A log while great information, usually doesnt...

Right click next to MAP and select graphs layout. Click the color window next to high value. Select any color of green you perfer. Im just messing around lol. You have quite the spread of fuel trim error. Posting up the entire log file would be better as seeing the entire log file would be...

Flex fuel tune? The adaptive stoich logic can trip up even the best tuners, espeaclialy if they are remote and are not thinking about what E% the car actually has in the fuel tank.

"The GT500 features the 7-speed TREMEC TR-9070 DCT. This transmission is capable of lightning-quick shifts in as little as 80 milliseconds." - Team TREMEC April 28, 2020 https://tremec-blog.com/the-differences-between-a-dct-and-a-traditional-automatic-transmission/ Thats about 20% faster than...

Can you clearify, im not sure what you are saying is better, or easier to use, or what?

When ever you have an exhaust leak in front of the O2 sensor there is fresh air in the exhaust the sensor is seeing. The ECU dumps fuel tring to correct, but the leak still tells the sensor its lean while the engine runs crazy rich, hence the smell. Noise isn't the greatest way to find an...

Cats cut out... sound like an exhaust leak has developed to me.

If you remove the catalytic converters, leave FAOSC enabled, the rear sensors will no longer have any delay in its responce to lean/ rich excursions compared to the front. The capacity of ox/ redox species in the catalytic converter will be assumed to be 0 and failed. Think about this...

https://mainforceperformance-com.myshopify.com/products/ford-coyote-and-fpv-miami-intake-spacers I believe its these. MFP just restocked them in August. I got mine from VMP when they sold them. Huge difference in manifold IAT. on hot 95*+ days at the drag strip, I think I went from 135-140*...

From a different patent: "This invention includes using two exhaust gas oxygen sensors (HEGO), one located upstream of a catalyst and one downstream of the catalyst, wherein the downstream HEGO sensor provides a feedback signal for learning control of the air fuel control system. The HEGO bias...

One skilled in the art is capable of performing such experiments without further explanation. A fore-aft oxygen sensor (FAOS) fuel control system. The control system uses an A/F bias for trimming the closed-loop operating point of a pre-catalyst A/F feedback controller. The A/F bias is...

Ford TCC apply and shift points for the A10 GM TCC apply and shift points for the A10 I think its obivous from comparing what GM tuned and what Ford didn't and why people think they are so different. Ford did not skip this on the 6R80 cars either. I did modify some of the extraneous values...

Yeah I just threw the timing in the lambda borderline knock modifier table instead of the 25 MP borderline tables. That is the usual go to, easy tuning, instead of global. I think global is what the SCT X4 used to allow users some timing control.

Your pedal produces an atmosphere condition compensated demand torque. Spark and fuel the ECU has control over, atmosphere conditions it does not and only has a base line of STP to go off of. This torque is turned into a desired mass airflow. This desired mass airflow value can be limited by...