When do secondaries kick in?
#1
Registered
Thread Starter
When do secondaries kick in?
When do the secondary injectors kick in?
When my S4 RX7 had a stock ecu, the secondaries kicked in around 2800 rpm.
With the rx8, there are 4 secondaries as opposed to 2--when under what conditions do those secondaries kick in.?
When my S4 RX7 had a stock ecu, the secondaries kicked in around 2800 rpm.
With the rx8, there are 4 secondaries as opposed to 2--when under what conditions do those secondaries kick in.?
#2
Boosted Kiwi
iTrader: (2)
It depends on load.
In a NA car the secondaries (outer yellows on an S1) come at 3700 and the p2s (inner yellows)around 5000 .
On a boosted engine the earliest Ive seen is : secondaries 3200 and P2s 4300
It has always been stated on here that the secondaries come on before the p2s.
However , some testing I have done suggest it's the other way around . I haven't said much about it because I haven't tested this to get a 100% definitive answer.
In a NA car the secondaries (outer yellows on an S1) come at 3700 and the p2s (inner yellows)around 5000 .
On a boosted engine the earliest Ive seen is : secondaries 3200 and P2s 4300
It has always been stated on here that the secondaries come on before the p2s.
However , some testing I have done suggest it's the other way around . I haven't said much about it because I haven't tested this to get a 100% definitive answer.
#4
Boosted Kiwi
iTrader: (2)
I don't think that chart is a a very accurate representation . For one thing the secondaries start at 20% duty not zero . For another the primaries don't go any higher than that first peak after they drop down when the secondaries kick in.
The reason I had doubts about which was first is because of the way you can hold the ssv shut and it doesn't seem to affect fueling till well after the secondaries are supposed to kick in .
The reason I had doubts about which was first is because of the way you can hold the ssv shut and it doesn't seem to affect fueling till well after the secondaries are supposed to kick in .
Last edited by Brettus; 10-13-2017 at 02:21 PM.