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K its a genuine walbro from suprastore.com i have a fp regulator but its on its way. So you believe its due to a fp regulator lacking..... onlything that baffles me is the stock fp regulator is still gonna put out stock fp yeah..... and if im only idling then why the hell would it matter if i...

Today i jumped my FP to run on constant 12v, and it ran a lot richer @ normal temp but random spikes kept occuring. Any ideas why it would have random spikes from around 14.7 to 17 and off the scale?

K, its a 1992 7mgte, port and polished head, intake exhaust, an aftermarket t3 turbo, 550cc injectors, walbro 255 fuel pump, intake, 3"exhaust, aem A/F meter with wide band 02, i put in a brand new coolant temp sensor and a new ECU, So whats happening is... Doesnt run worth a shit, runs lean...

whats the outcome? did u do a knocksensor rewire? Im having the same richness issue where i cant for the life of me find out why and have done everything to figure it out. I have a maft pro aswell no absolutly no excuses for afm anymore. New fuel pump, Knock sensor rewire, checked over IC...

Does anyone have any bins for tuner pro?