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After my last race with a failing fuel pump. http://www.sr20-forum.com/vvl/39632-sebring-turkey-trot-2010-a.html
I replaced the pump with another Walbro 255. I then took the car to Japtrix today to have it retuned. It was always a little on the lean side while running on track. Could have been because of the fuel pump.
Setup is a stock VE bottom end, VE head cleaned up in the bowl and a 5 angle valve job. Intake match ported with temp. insulators, a OEM 64mm throttle body and a DE MAF bored to 54mm. I wanted to keep the same bore ratio as stock. A Calum RT ecu using JWT race VE timing map. 3" exhaust. and a HOTSHOT GEN 6 header. " I man have to stress dat"
N1 cams set to +5 -5. Cams set to 5400 RPM. Set low for better lap times.
More tuning tomorrow to get somemore out of it and clean up the graph.
Here is a taste.
I replaced the pump with another Walbro 255. I then took the car to Japtrix today to have it retuned. It was always a little on the lean side while running on track. Could have been because of the fuel pump.
Setup is a stock VE bottom end, VE head cleaned up in the bowl and a 5 angle valve job. Intake match ported with temp. insulators, a OEM 64mm throttle body and a DE MAF bored to 54mm. I wanted to keep the same bore ratio as stock. A Calum RT ecu using JWT race VE timing map. 3" exhaust. and a HOTSHOT GEN 6 header. " I man have to stress dat"
N1 cams set to +5 -5. Cams set to 5400 RPM. Set low for better lap times.
More tuning tomorrow to get somemore out of it and clean up the graph.
Here is a taste.
![](http://img.photobucket.com/albums/v685/serexcess/SCAN0106.jpg)