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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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10-31-2022, 11:37 AM
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#1 |
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Drives: 2020 Subaru BRZ
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Direct injection
At what rpm does the di take over. I know di and pi work together til higher rpm. But what rpm. I have a dead miss at 3k rpm and above. Drop below 3k and all is well.
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10-31-2022, 12:30 PM
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#2 |
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DI is constantly ON at all rpm and engine load, just on startup is 100% PI, then it switches to 50/50% DI/PI, then it switches again to 100% PI for a few seconds
then it switches again to 100% DI at idle and DI is then used all time at different percentage 0 means 100% DI this is for old pre restyling, newer car use a bit more port sorry but guys you need to understand that in order to help more , some kind of logs are needed said so, how you describe yes, could be something DI related |
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10-31-2022, 11:16 PM
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#3 |
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[QUOTE=tomm.brz;3554553]DI is constantly ON at all rpm and engine load, just on startup is 100% PI, then it switches to 50/50% DI/PI, then it switches again to 100% PI for a few seconds
This helps for sure. My miss comes on at 3k rpmsthats when pi shuts off. And because i apparently have a di problem on #1 cylinder. Now i need to find the source of tbe missfire. Di injector works fine in test. Engine harrness ohms out as ok as best i can tell. Ill put it back together on Wednesday night with a different engine harness and a different injector in case my tests were not the bedt method. Thanks |
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11-01-2022, 03:39 AM
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#4 |
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actually seeing you have 2020 car, the oem tune for your car never shuts down PI at high load like those tables i poster, but instead of 0 you have 20% PI
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