Braineack

iTrader: (62)

elior77

Girz0r

iTrader: (1)

There is hope.

MstrBlk

FWIW, I am using 540cc EV1 injectors and idle smoothly at 14.7, but I am only at 7psi for now.

My plan is to upgrade to EV14 before increasing boost, as well as install LS coils.

Just wanted to throw that out there

18psi

iTrader: (76)

If you had enough brain cells you'd know that making power/boost doesn't require much injection technology, and idle/low loads is where this technology shines.
Also 540cc is a small injector, so that's not saying much.
Also post a log showing this smooth idle you speak of, as well as some low load driving and throttle transitions, and we'll show you what a proper ev14 fueled log looks like.
Just.......throwing that out there

MstrBlk

Well considering I just finished assembling my first turbo build and have a bit more tuning to do, I think I'll wait to post my logs before I embarrass myself. In short time I will post logs to my build thread and ask for community analysis and constructive feedback.

But for now, I am idling very smoothly at 14.7 I suppose that could be due to the smaller size, but I just wanted to state that it is attainable.

Thanks for the offer though, I will definitely take you up on it! I will PM you once my logs are up to see what you think.

And to OP, Real cats > Forum cats 2 > -23

18psi

iTrader: (76)

I'll be genuinely impressed if OP actually did cancel his order and got ev14's. Doubt it though

elior77

My denso 460cc idled just right at 14.7 (after I upgraded to seq inj) I run them up to 15psi so have no fear.

yossi126

iTrader: (6)

I can vouch that he did
At least we got an informative article out of this thread.

MstrBlk

Yes my 94 came prewired for sequential injection, forgot to state that I am utilizing it.

18psi

iTrader: (76)

all 94+are

Braineack

iTrader: (62)

and you're running them about as fast as you can possible cycle them.

now imagine if they flowed double the amount of fuel... you wont be at 15.0:1 anymore.

elior77

I get what you are saying, but the ev14 lowest pw is about 1ms too... so we still 460cc 1ms pw vs 1000cc 1ms pw...

Please explain.

Braineack

iTrader: (62)

except they're not.

The opening time of the rx7 460cc injectors is closer to 1.2-1.4ms -- at least for anyone who's actually tried to measure them (some exercise we did back in 2010). On my own personal miata, with those same injectors, if I ever tried to inject less than 1.6ms of fuel in my miata it would instantly stall or oscillate wildly as it ran out of fuel. My normal idle PW to maintain 14.0:1 was ~1.7xxms.

Here's what I know without getting technical: I've always had trouble getting rx7 550cc injectors to idle well on any miata. RC550s same thing -- very touchy to try to get a stoich idle. EV1 DW1000s couldn't idle leaner than 12.0:1. EV14 ID1000s can idle 15.0:1 smooth as silk.

elior77

I checked some logs and at idle (900rpm) the pw is 2.0-2.1ms @ 14.7~, if I understand correctly, you say my old injectors were not big enough to show the problematic idle of old and big injectors.

Braineack

iTrader: (62)

correct. Once you move into >550cc you'll really see it.