High flow fuel pump on stock 4g63 engine.
#1
Newbie
Thread Starter
High flow fuel pump on stock 4g63 engine.
Hello everyone,
Have had my evo for a couple of months now and recently fuel pump is acting up. After close inspection, my mechanic has confirmed its a fake walbro so we swapped it with another fuelpump.However the current fuelpump is a 340lph one and has give me a higher fuel pressure reading at 4bar(from fuel regulator). would it do any harm to my car with the high flow fuel pump as my car is completely stock. We tried to bring it down to 3 bar but no success. Any clarifications would be much appreciated.. cheers.
Have had my evo for a couple of months now and recently fuel pump is acting up. After close inspection, my mechanic has confirmed its a fake walbro so we swapped it with another fuelpump.However the current fuelpump is a 340lph one and has give me a higher fuel pressure reading at 4bar(from fuel regulator). would it do any harm to my car with the high flow fuel pump as my car is completely stock. We tried to bring it down to 3 bar but no success. Any clarifications would be much appreciated.. cheers.
#2
Evolving Member
iTrader: (2)
Sounds like it's over running the regulator, if it's a stock regulator, you need to go AFPR. If it's aftermarket, and it won't adjust down, you need to find the restriction in the return line.
It's going to run richer, how much exactly I wouldn't know. A tune could compensate, but it's a band-aid.
It's going to run richer, how much exactly I wouldn't know. A tune could compensate, but it's a band-aid.
#4
Newbie
Thread Starter
yup, only managed to get about 240-280km for a 40litres full tank. did noticed black smoke during WOT. so, the best solution is to change back to 255lph fuel pump i reckon.
#6
Newbie
Thread Starter