What’s up, guys so I installed a new walbro e85 pump the 450 and car will start up fine when it’s cold but once car is warm/hot car is hard to start I need to hit the gas peddle for the car to stay running! Once car stays running there are times when driving around the car will go lean and falls on its face I let off the gas and car is normal again and this is while cruising When I come up to a stop RPM will fall and car wants to die need to hold foot on gas so it doesn’t stall out And I also noticed that with this 450 pump the FP will fall to 0 once I **** the car off with my 255 FP would hold around 30/35 psi and drop to 0 over time say 30 mins or so. And this only happens on pump gas E85 car starts and drives better but still has these issues just not as bad any ideas?

 

These pumps tend to overrun the regulator a bit. The tune may need tweaked.

 

yep... im sure its rich.
tune