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Really rough idle

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Old May 2, 2022 | 04:18 PM
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Default Really rough idle

Hi all, I finally got round to relocating the coils into the fenders and also fitted 1200 injectors (previous 600).
I was expecting the car to need a tune and not run 100% but it’s is really rough. Idle is really jumping and if I rev it splutters and hesitates.
is this normal because of the larger injectors or have I done something wrong while relocating the coils (bad leads etc)

tried to upload a video but it won’t let me
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Old May 2, 2022 | 05:17 PM
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You should not have even attempted to start the car without a tune with the injectors. It is doubling the fuel, and probably flooding the cylinders and could easily cause damage. Stop, get it tuned, and go from there.
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Old May 2, 2022 | 05:21 PM
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Thanks. Sounds stupid but I didn’t even think it could cause damage, just thought it would run a little rich.
mill have to refit the 600’s as I have to drive to the tuners which is 100miles away
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Old May 2, 2022 | 05:26 PM
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Yep, no way to drive it like that. Either grab a tuner and do it yourself, or drive to tuner with old injectors, and have it updated then. If a tuner is 100+ miles away, well worth it to invest in your own tuner and just have them email a file to load.
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