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DW 800cc or 1000cc Injectors

 
Old 10-11-2010, 08:47 PM
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Default DW 800cc or 1000cc Injectors

I am about to order some new injectors tomorrow from DW. I am shooting for 300-350hp on 93 octane gas. Probably will not be going e85 any time soon, but is a possibility next year once the MS3 flex fuel support gets better. I will be running both sequential fuel and spark. I know I should get the 800cc injectors because they will have enough headroom, but for an extra $20 I can get 200 extra CC. So can anyone talk me into saving the $20? Or do I make sure I never buy injectors again in my life.
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Old 10-11-2010, 08:51 PM
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id say get the most for your money! if you think you will actually get the 1000cc one eventually, then go ahead and get them now. spend the extra 20 bucks now or wait and sell yours for a loss and pay more later!
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Old 10-11-2010, 09:04 PM
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My biggest concern I guess is really what will my idle quality be like with the 1000cc injectors.
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Old 10-11-2010, 09:07 PM
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i know you say your going with DW but according to sav his ID 1000s idle a hell of alot better than his last injectors witch were a lower cc (idk what type and size he had)

food for thought!
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Old 10-11-2010, 09:10 PM
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Originally Posted by WonTon View Post
i know you say your going with DW but according to sav his ID 1000s idle a hell of alot better than his last injectors witch were a lower cc (idk what type and size he had)

food for thought!
I believe Sav has also said had the DW 1000cc injectors been out when he bought his he would have gone with them, but I could be wrong about that. I will be talking to Chris from DW in the morning and see what he says about it. I just figured I would say what some other people running large injectors say to go with.
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Old 10-11-2010, 09:18 PM
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im biteing the bullet of some 780cc EVO injectors. (i cant afford anything else right now) i do recall Sav saying that as well.
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Old 10-11-2010, 11:57 PM
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It's one of those things that you'd have to take your ECU into consideration, too. I'm not a tuner, but I do know that some systems have limits on how much fuel they can adjust.

That being said, if you have everything in place and think there is a possibility of needing the larger set I'd say go with the bigger injector. There really shouldn't be a difference in idle quality between our 800cc and 1000cc.

Give me a call in the morning. I usually get in around 8:00a Central time.
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Old 10-12-2010, 12:53 AM
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don't know about DW's, but my ID1000's idle quite well on gas and e85 since I got em tuned properly.

13.5-14.5 afr's depending on a bunch of variables. Not a WHOLE bunch of idle tuning either, so it can only get better from.

I'm fairly confident I can get em to idle pretty consistently in the 14-14.7 range if I tried.



I don't see why the DW's can't do the same unless they are inferior (which I don't know)
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Old 10-12-2010, 02:38 AM
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I got my DW 1000cc's installed and they idle fine and steady
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Old 10-12-2010, 08:41 AM
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Originally Posted by railz View Post
I got my DW 1000cc's installed and they idle fine and steady
And you are running MS2 correct? If MS2 can do it on a 1.6, MS3 should be able to do it fine on a 1.8.
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Old 10-12-2010, 03:43 PM
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I ordered the DW 1000cc injectors today. So I should hopefully have them up and running sometime next week.
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Old 10-12-2010, 03:47 PM
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I've tuned an MS2 on 1000cc HKS injectors, it's fine unless you are very picky.
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Originally Posted by ninerwfo View Post
The “into to megasquirt thread” mentions that the MS3 basic has 5 inputs with built in pull up resistors - and I was just wondering why it would have so many, while the MS3Pro PnP has just 2 (with no pull ups?)
MS Labs: Plug and Play Megasquirt ECUs for ANY 90-05 Miata (NA, NB1, NB2 w/VVT, MSM), including basemaps to get you started ASAP. PM me or email or details.
For support on MS Labs ECUs: Please email, be sure to include the unit's serial number and include a datalog and your current map.
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Old 10-12-2010, 03:50 PM
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he'll be on seq. inj. as well...
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Old 10-12-2010, 03:54 PM
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Yeah, the car I was talking about was on seq injection as well (one of my enhanced DIYPNP units).
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Originally Posted by ninerwfo View Post
The “into to megasquirt thread” mentions that the MS3 basic has 5 inputs with built in pull up resistors - and I was just wondering why it would have so many, while the MS3Pro PnP has just 2 (with no pull ups?)
MS Labs: Plug and Play Megasquirt ECUs for ANY 90-05 Miata (NA, NB1, NB2 w/VVT, MSM), including basemaps to get you started ASAP. PM me or email or details.
For support on MS Labs ECUs: Please email, be sure to include the unit's serial number and include a datalog and your current map.
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Old 10-12-2010, 04:16 PM
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I have always idled in the mid 13.x range. As long as these can do that I will be happy.
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Old 10-12-2010, 07:27 PM
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hey you guys with the dws. Hows your idle when voltage drops to let say 12-13 volts under bad electric load?
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