doommachine
Well-Known Member
Just some feedback on evo8 vs RX7 550cc injectors...
Evo8's definitely flow more, at idle with the rx7's my crap tune saw the O2 reading hover between 70-300 mv... the evo8's instantly peg it at 1054 and leave it there
The O2 loop can't remove enough fuel at 2000 rpm to make it run less than that rich, and I have it set to lean 8%....
Can't really say how much better they are overall as my tiny battery went flat (I had the door of the car open for 30 minutes, one start was all I got heh), but I will add to this tomorrow and work out how much more they flow by dropping a percentage of the fuel out in total until it runs the same.
Additionally - they are a bit of a PITA to install compared to the rx7's, cause the pintle cap is different, just a tiny bit thinner so the little rubber donut won't sit on there tightly enough without falling off while you're putting the fuel rail back in. In the end I put the seals into the head and slowly lowered the injectors in.
Evo8's definitely flow more, at idle with the rx7's my crap tune saw the O2 reading hover between 70-300 mv... the evo8's instantly peg it at 1054 and leave it there
The O2 loop can't remove enough fuel at 2000 rpm to make it run less than that rich, and I have it set to lean 8%.... Can't really say how much better they are overall as my tiny battery went flat (I had the door of the car open for 30 minutes, one start was all I got heh), but I will add to this tomorrow and work out how much more they flow by dropping a percentage of the fuel out in total until it runs the same.
Additionally - they are a bit of a PITA to install compared to the rx7's, cause the pintle cap is different, just a tiny bit thinner so the little rubber donut won't sit on there tightly enough without falling off while you're putting the fuel rail back in. In the end I put the seals into the head and slowly lowered the injectors in.
