What to fix on my Fuel System?
#61
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Good point. I'll see what that would cost and how to package it. Id rather do that. I did a search for the ID 2000s and ID 1700s and found a lot of high power people use the 1000 and 1300's and go staged injection when they need more vs using larger injectors.
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ID1700s are the "right" answer. Staged injection is a bandaid.
But do staged injection. I want to see you figure it out so I can try and run it will 2 sets of gt500 injectors![](https://www.miataturbo.net/images/smilies/smile.gif)
Pretty sure the 1700s are really new technology. Don't think much will be out there. Aren't they like $2k for 4?
But do staged injection. I want to see you figure it out so I can try and run it will 2 sets of gt500 injectors
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Pretty sure the 1700s are really new technology. Don't think much will be out there. Aren't they like $2k for 4?
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ID1700s are the "right" answer. Staged injection is a bandaid.
But do staged injection. I want to see you figure it out so I can try and run it will 2 sets of gt500 injectors![](https://www.miataturbo.net/images/smilies/smile.gif)
Pretty sure the 1700s are really new technology. Don't think much will be out there. Aren't they like $2k for 4?
But do staged injection. I want to see you figure it out so I can try and run it will 2 sets of gt500 injectors
![](https://www.miataturbo.net/images/smilies/smile.gif)
Pretty sure the 1700s are really new technology. Don't think much will be out there. Aren't they like $2k for 4?
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The result is pressure and voltage sensitivity exceeding that of the ID1300, requiring only 9 volts to open consistently at 6 bar, and a flow rate of ≈ 2640 cc/min at 7 bar
Call ID. I hear they are good people.
#65
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They are excellent people. The cust service I got from them each time has been exemplary.
One of the reasons I use them on all my cars and recommend them to every single car I work on/tune.
If you call them they will answer each of your questions, and then you can share with us, because there isn't too much info out there on big boy fuel setups, and every bit helps.
One of the reasons I use them on all my cars and recommend them to every single car I work on/tune.
If you call them they will answer each of your questions, and then you can share with us, because there isn't too much info out there on big boy fuel setups, and every bit helps.
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Staged is not a band-aid, it will deliver a much better idle than 1700cc/min injectors.
There's not much to figure out, really. You modify the manifold, install four more injectors and another fuel rail, run some fuel to it, and tell the ECU about them. If you're low on injector drivers you can run them in batch mode, because you're only going to use them at high boost.
At least, you could with the Hydra (I did), I assume the MS is at least that capable.
--Ian
There's not much to figure out, really. You modify the manifold, install four more injectors and another fuel rail, run some fuel to it, and tell the ECU about them. If you're low on injector drivers you can run them in batch mode, because you're only going to use them at high boost.
At least, you could with the Hydra (I did), I assume the MS is at least that capable.
--Ian
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ID1700s are the "right" answer. Staged injection is a bandaid.
But do staged injection. I want to see you figure it out so I can try and run it will 2 sets of gt500 injectors![](https://www.miataturbo.net/images/smilies/smile.gif)
Pretty sure the 1700s are really new technology. Don't think much will be out there. Aren't they like $2k for 4?
But do staged injection. I want to see you figure it out so I can try and run it will 2 sets of gt500 injectors
![](https://www.miataturbo.net/images/smilies/smile.gif)
Pretty sure the 1700s are really new technology. Don't think much will be out there. Aren't they like $2k for 4?
Also a set of four ID1700's is definitely not $2k. See link below.
90-05 Miata, 1.6L / 1.8L | ID1700 |injector Dynamics | 1700.11.02.60.11.4 - Mazda - ID1700 - Fuel Injectors - Fuel Delivery - Category
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IIRC Theseus was in the low 12s. I wouldn't hesitate to park it at 12.3 or 12.4. Remember that we only run richer in boost to prevent detonation and reduce cylinder temperatures, and E85 solves both of those problems. You're basically looking for max power AFR, although that requires a dyno to determine
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IIRC Theseus was in the low 12s. I wouldn't hesitate to park it at 12.3 or 12.4. Remember that we only run richer in boost to prevent detonation and reduce cylinder temperatures, and E85 solves both of those problems. You're basically looking for max power AFR, although that requires a dyno to determine ![](https://www.miataturbo.net/images/smilies/smile.gif)
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So tune till you don't make power easily, unless you get det. Same as spark.
What AFRs do you target on CA gas? Don't you do most of your tuning off the dyno? Or do you use virtual dyno.
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With E I've run out of spark before I saw det or stopped making power.
I use both when possible. Depends on what the car will be used for, but low 11's on 91 water.
I agree with Sav though, and even said the same thing in a PM response to Pat a while ago (the part about running 12afr)
Though I'm not sure how much headroom .5afr will provide to the injectors.
I use both when possible. Depends on what the car will be used for, but low 11's on 91 water.
I agree with Sav though, and even said the same thing in a PM response to Pat a while ago (the part about running 12afr)
Though I'm not sure how much headroom .5afr will provide to the injectors.
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You lean it out until it stops making more power. There's (virtually) no fear of melting pistons or detonation, so no reason to run richer than max power.
Going from 11.5 to 12.3 would reduce DC% by ~6.5%
Going from 11.5 to 12.3 would reduce DC% by ~6.5%
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Yeah with full time closed loop you're fine, but make sure you have at least 5% EGO correction for those times you may get a crappy batch (or make sure your flex fuel is working properly)
I've seen a full point swing in AFR between different tanks of E without touching anything.
I've seen a full point swing in AFR between different tanks of E without touching anything.
I've read you say here before you've seen a full point swing in AFR on E85 between batches. That's 1/2 the reason I was waiting to touch my AFRs, just to see if they move a lot this winter. So far, they have stayed the same every fill up since I did the conversion this summer.
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Yep, happened multiple times. I think it's when people have residual pump gas or when they go to different stations and one has min e70 and one min 85, which can swing the ethanol content by as much as 10-20%. I also hear that in other states the blend changes pretty significantly between summer/winter
Just set up EGO corr table to allow room for it and you should be fine.
On some of the OEM ecu's we tune we don't have closed loop in boost luxury, which is why many stay on the rich side
Just set up EGO corr table to allow room for it and you should be fine.
On some of the OEM ecu's we tune we don't have closed loop in boost luxury, which is why many stay on the rich side