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The mkiv Supra Owners Club

j spec bpu 6 speed


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the car is like that for the last 5 years..no issues..i always had 1.2 bar from the exhaust only..i decided to install a boost controller a few days ago and the car starts to overboost and apparently running lean..no mods no nothing..just exhaust and intercooler..

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first thing i am installing a wallbro 255..but the strange thing is that the car has been like this for the last 5 years (since i bought it ) and another 6-7 i guess before that and had no issues at all..is there a chance that the dyno and the afr sensors used to be faulty? do not know...i am lost

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  • 2 weeks later...

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