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What size injectors should I get?

Old 10-13-2023, 06:39 AM
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Default What size injectors should I get?

As of right now I知 making high 400 hp on my 2018 2.0 accord. I知 looking into upgrading my injectors to something that will support 600hp. I have an MHI Stage 2 turbo and it maxes at 550hp so I think having a 50hp head room would be good if I were to go bigger. Suggestions??
Old 10-13-2023, 06:49 AM
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Default Re: What size injectors should I get?

What fuel
Old 10-13-2023, 06:51 AM
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Default Re: What size injectors should I get?

Originally Posted by Chance EG
What fuel
maxed at e30 stock fuel except flex fuel kit
Old 10-13-2023, 06:55 AM
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Default Re: What size injectors should I get?

Originally Posted by Rfjlj
maxed at e30 stock fuel except flex fuel kit
I'd look for something in the 1200-1500cc range.
Old 10-13-2023, 06:57 AM
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Default Re: What size injectors should I get?

Originally Posted by Chance EG
I'd look for something in the 1200-1500cc range.
would you run into problems if you were to go too big
Old 10-13-2023, 07:05 AM
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Default Re: What size injectors should I get?

Originally Posted by Rfjlj
would you run into problems if you were to go too big
There's a lot of factors to consider there - The rest of the car's fuel system, the ignition, and the ECU/tuning. But generally yes there's a tradeoff, larger injectors will give you better duty cycles but eventually your drivability will start to suffer mostly in partial-throttle situations if you get super huge injectors.

With a good ECU and ignition system, which I'd wager your car has, I'd expect 1600cc to be the upper threshold before drivability really starts to suffer. I think anything as low as 1200cc should provide enough flow to efficiently support low 600WHP, and anything as high as 1600cc should still provide at least acceptable street driveability.
Old 10-13-2023, 12:16 PM
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Default Re: What size injectors should I get?

If you can run E85, you could go with the Injector Dynamics ID1700X, but it won't idle great with gasoline. I agree with Chance...I'd maybe go with the something like the ID1300X.
Old 10-13-2023, 01:30 PM
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Default Re: What size injectors should I get?

My ID1300cc idle great. Just as good as their ID1000CC
Old 10-13-2023, 08:34 PM
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Default Re: What size injectors should I get?

The OP's Accord is Direct Injected... you cannot just get any size that you desire because the choices are quite limited. You will also need to upgrade your lift/high pressure and maybe even the in-tank fuel pumps at the same time.
Old 10-14-2023, 04:43 AM
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Default Re: What size injectors should I get?

Originally Posted by JRCivic1
The OP's Accord is Direct Injected... you cannot just get any size that you desire because the choices are quite limited. You will also need to upgrade your lift/high pressure and maybe even the in-tank fuel pumps at the same time.
Certainly complicates things
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