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-   -   Direct injection (https://www.ft86club.com/forums/showthread.php?t=151728)

Rabrooks 10-31-2022 11:37 AM

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.

tomm.brz 10-31-2022 12:30 PM

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


https://www.ft86club.com/forums/atta...1&d=1458634617

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

Rabrooks 10-31-2022 11:16 PM

[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

tomm.brz 11-01-2022 03:39 AM

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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