1300cc injector set up values
#1
1300cc injector set up values
I posted this in the PFC section also, but thought some of you with 1300cc injectors may not fequent that section..........................
I picked up a set of new 850cc injectors from the RX7 store & had them forwarded to RC Engineering converting them to 1300's.
My question concerns lag times & proper 1300cc secondary injector set up.
From my reading through old post about 1300cc lag times I came up with anywhere from +.16ms to +.43ms, with the understanding that +.2ms works well.
The 1300cc correction value would be 65%
So on the commander "injector pulse timing correction" screen do I want to see the following????????????????
Fr-Pr 100% +0.00ms
Fr-Sc +0.20ms
Rr-Pr 65% +0.00ms
Rr-Sc +0.20ms
Q-Pr 550cc
Q-Sc 1300cc
Thanks,
"M"
I picked up a set of new 850cc injectors from the RX7 store & had them forwarded to RC Engineering converting them to 1300's.
My question concerns lag times & proper 1300cc secondary injector set up.
From my reading through old post about 1300cc lag times I came up with anywhere from +.16ms to +.43ms, with the understanding that +.2ms works well.
The 1300cc correction value would be 65%
So on the commander "injector pulse timing correction" screen do I want to see the following????????????????
Fr-Pr 100% +0.00ms
Fr-Sc +0.20ms
Rr-Pr 65% +0.00ms
Rr-Sc +0.20ms
Q-Pr 550cc
Q-Sc 1300cc
Thanks,
"M"
#4
Originally Posted by xblazinlv
FR-PR 100% 0.00
FR-SC 100% 0.20
Rr-Pr 100% 0.00
Rr-Sc 100% 0.20
Works perfect
FR-SC 100% 0.20
Rr-Pr 100% 0.00
Rr-Sc 100% 0.20
Works perfect
Use the original injector value & divide it by your new injector value.
850 divided by 1300 = 0.653 or 65.3%
Originally Posted by skotx
Do you have access to a Datalogit? You're probably also going to want to change injector overlap and pri/sec transition %.
The reason for the post was because I installed the injectors at home & wanted to get the Initial set up inputted prior to driving the car (slowly) down there.
But now I have a new twist. I just scored some 99 spec 280hp turbos off eBay. So IM gonna hold off on tuning until after I get them installed.
#5
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I've been driving around with the 100% setting for a couple weeks now and it works perfectly fine.
I was given those settings by 2 different tuners, so I'd assume it is ok to leave the values at 100%
I was given those settings by 2 different tuners, so I'd assume it is ok to leave the values at 100%
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#10
Originally Posted by maxcooper
Note that Rr-Pr means "rear primary". I don't think you need to put in any percentages when you change the size of the secondaries. Just the size.
-Max
-Max
Why would you have different values for the front & rear Primary injectors only?
Plus, you do an injector correction for the Primary injectors only?
I don't doubt you reply I just want to understand the logic from Apexi better.
Bottom line.................
Looks like all I need to do is change the Fr/Rr-Sc inj lag values to +0.20 & update the Sc inj from 850cc to 1300cc
#11
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Originally Posted by maxcooper
Note that Rr-Pr means "rear primary". I don't think you need to put in any percentages when you change the size of the secondaries. Just the size.
-Max
-Max
That's what I heard as well. Also, if you check page 26 of the commander service manual, when they show the example, you'll see they don't change or even set a percentage value for the bigger injectors.
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