Emerald K3 ECU...Is it suitable for Rv8.??
Discussion
The latest ecu is the K6 but yes the earlier K3 is virtually the same .. it's based on the older hardware but with most of the functionality of the K6 (moveable load and rpm sites, target AFR table, self learning 3 map facility etc etc). The only thing you really lose out on with a K3 over the K6 is the ability to control the std 4 wire stepper motor .. so either go without it, or substitute in another eg bosch 2 wire unit instead. Fitted loads of emeralds of all variations over the past 15 years.
spitfire4v8 said:
The latest ecu is the K6 but yes the earlier K3 is virtually the same .. it's based on the older hardware but with most of the functionality of the K6 (moveable load and rpm sites, target AFR table, self learning 3 map facility etc etc). The only thing you really lose out on with a K3 over the K6 is the ability to control the std 4 wire stepper motor .. so either go without it, or substitute in another eg bosch 2 wire unit instead. Fitted loads of emeralds of all variations over the past 15 years.
Thanks for that...Which bosch unit will fit?
I'm on the Mbe which also does away with the stepper.
Runs very well from cold, no shunting and just maintains a steady tickover regardless of weather conditions.
If I understand this correctly the Ecu takes readings and richens the fuel map based on ambient temps etc and also uses ignition advance/retard to then maintain a good idle, once or twice I've started the car and the idle drops to 600 revs but then there's an instant advance of the ignition to help speed up the engine and maintain idle as extra fuel is then added to compensate and maintain idle, even cold it doesn't appear to run very rich which pleases me no end.
Runs very well from cold, no shunting and just maintains a steady tickover regardless of weather conditions.
If I understand this correctly the Ecu takes readings and richens the fuel map based on ambient temps etc and also uses ignition advance/retard to then maintain a good idle, once or twice I've started the car and the idle drops to 600 revs but then there's an instant advance of the ignition to help speed up the engine and maintain idle as extra fuel is then added to compensate and maintain idle, even cold it doesn't appear to run very rich which pleases me no end.
Pupp said:
Yep, them's the ones (and what I use)... although many are successful in getting the Emerald to function happily with no valve at all
With a big cam no matter how much you throw ign advance and additional fuel at it you wont get cold idle in a month of sundays with no ICV 
maybe I am getting fussy with old age but my update involves a 2 wire Bosch idle valve personally I like a 1800 fast idle when cold keeps the motor on the cam sweet spot whilst moving around slowly decaying as it warms up Interesting Simon, yes I hold mine at a higher idle until warm but I was just pointing out how mine can just start and run at idle pretty effortlessly even at - temps, impressive stuff.
I get the high lift cam issue, is it also something to do with it taking such force to turn the cam that the engine on idle simply can't turn over so smoothly, not enough power to sustain it.
My 885 cam with the 38 mm trumpets help I reckon, I know I'm not getting the air at higher revs but low revs it's rushing in nicely,, does that make engineering sense? I also feel that's why mine has good torque until about 4700 revs as the air is travelling faster,,, or am I dreaming,, hahah!
It's something I'd like to know, I want bigger inlet but worry I'll loose responsiveness and torque where I mostly use the car it at around 1800-3500 revs?
Can anyone enlighten me on intake tuning and its effects,
I see Jackson4 has ported his inlet,, it's mega and I hope it gives plenty of power and torque but I worry it'll feel flat until your really revving it,, am I wrong, I really hope I am,
I've read that opening up the ports slows down the air intake,,, can be detrimental, if mines got 300 Hp on the 38 mm trumpets and I could get 315Hp with bigger ones but my torque curve suffers I'd not want to replace them, if my torques remained at 350 as it is now I'd change them, is there a risk I'll loose torque if I put fancy trumpets etc in?
I get the high lift cam issue, is it also something to do with it taking such force to turn the cam that the engine on idle simply can't turn over so smoothly, not enough power to sustain it.
My 885 cam with the 38 mm trumpets help I reckon, I know I'm not getting the air at higher revs but low revs it's rushing in nicely,, does that make engineering sense? I also feel that's why mine has good torque until about 4700 revs as the air is travelling faster,,, or am I dreaming,, hahah!
It's something I'd like to know, I want bigger inlet but worry I'll loose responsiveness and torque where I mostly use the car it at around 1800-3500 revs?
Can anyone enlighten me on intake tuning and its effects,
I see Jackson4 has ported his inlet,, it's mega and I hope it gives plenty of power and torque but I worry it'll feel flat until your really revving it,, am I wrong, I really hope I am,
I've read that opening up the ports slows down the air intake,,, can be detrimental, if mines got 300 Hp on the 38 mm trumpets and I could get 315Hp with bigger ones but my torque curve suffers I'd not want to replace them, if my torques remained at 350 as it is now I'd change them, is there a risk I'll loose torque if I put fancy trumpets etc in?
Right off topic, just ignore that last post 
So as good as any ECU is,, with bigger lifting cams comes the need for an idle valve to control air to maintain some form of idle,,
Sheels runs the Canams and idle valve and it's silky smooth, mines more abrupt on/off throttle and the revs drop faster, different but both brilliant in there own way.
So as good as any ECU is,, with bigger lifting cams comes the need for an idle valve to control air to maintain some form of idle,,
Sheels runs the Canams and idle valve and it's silky smooth, mines more abrupt on/off throttle and the revs drop faster, different but both brilliant in there own way.
Edited by ClassiChimi on Friday 27th May 18:51
ClassiChimi said:
Interesting Simon, yes I hold mine at a higher idle until warm but I was just pointing out how mine can just start and run at idle pretty effortlessly even at - temps, impressive stuff.
I get the high lift cam issue, is it also something to do with it taking such force to turn the cam that the engine on idle simply can't turn over so smoothly, not enough power to sustain it.
My 885 cam with the 38 mm trumpets help I reckon, I know I'm not getting the air at higher revs but low revs it's rushing in nicely,, does that make engineering sense? I also feel that's why mine has good torque until about 4700 revs as the air is travelling faster,,, or am I dreaming,, hahah!
It's something I'd like to know, I want bigger inlet but worry I'll loose responsiveness and torque where I mostly use the car it at around 1800-3500 revs?
Can anyone enlighten me on intake tuning and its effects,
I see Jackson4 has ported his inlet,, it's mega and I hope it gives plenty of power and torque but I worry it'll feel flat until your really revving it,, am I wrong, I really hope I am,
I've read that opening up the ports slows down the air intake,,, can be detrimental, if mines got 300 Hp on the 38 mm trumpets and I could get 315Hp with bigger ones but my torque curve suffers I'd not want to replace them, if my torques remained at 350 as it is now I'd change them, is there a risk I'll loose torque if I put fancy trumpets etc in?
Hi Alun sorry mate I wasn't having a dig at your post just saying with lots of cam duration idle from cold is out with no ICV/stepper I get the high lift cam issue, is it also something to do with it taking such force to turn the cam that the engine on idle simply can't turn over so smoothly, not enough power to sustain it.
My 885 cam with the 38 mm trumpets help I reckon, I know I'm not getting the air at higher revs but low revs it's rushing in nicely,, does that make engineering sense? I also feel that's why mine has good torque until about 4700 revs as the air is travelling faster,,, or am I dreaming,, hahah!
It's something I'd like to know, I want bigger inlet but worry I'll loose responsiveness and torque where I mostly use the car it at around 1800-3500 revs?
Can anyone enlighten me on intake tuning and its effects,
I see Jackson4 has ported his inlet,, it's mega and I hope it gives plenty of power and torque but I worry it'll feel flat until your really revving it,, am I wrong, I really hope I am,
I've read that opening up the ports slows down the air intake,,, can be detrimental, if mines got 300 Hp on the 38 mm trumpets and I could get 315Hp with bigger ones but my torque curve suffers I'd not want to replace them, if my torques remained at 350 as it is now I'd change them, is there a risk I'll loose torque if I put fancy trumpets etc in?
the 885 is not a cam I consider to be big but it is a cracker however real world cam rather than big cam compromise ClassiChimi said:
13.1 hahahahah, I'm a knob, hahah,
Yep the 885's soft compared to some but then I always had an eye on my other persona of driving country lanes and mountain roads at a lazy pace.
Exactly every one has different driving styles, you don't want a car that irritates because you made a poor cam choice etc, am sure your car is happy to do both if your 1/4 times are anything to go by Yep the 885's soft compared to some but then I always had an eye on my other persona of driving country lanes and mountain roads at a lazy pace.
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