Bear with me on this it gets a little technical..
JJ mentioned he had turbo'd his car and it widened the power band - which using that method is exactly what its supposed to do. However alot of people wont have the tools, knowhow or money to do that.
What is effectively happening with that engine at the low end is the intake air is being compressed, unsuprisingly, more air gives more power because more fuel can be burnt but more importantly pumping losses in the engine are reduced and therefore the engine will rev more readily at any given RPM.
The problem with the accent is until it hits its torque band its a little lethargic and wheezy and it doesnt rev all that freely but putting on a conventional turbo is expensive...
There are kits using an electric system that claim a 1psi boost pressure but which are configured to switch on when the throttle is wide open. In that configuration they are pretty much pointless - because the intake system is already running peak CFM as everything is wide open. However what would the effect be if instead of e-boost coming on at high power, it was switched to activate between 1500-2500 rpm? I strongly suspect that while its true that 1psi is no real use in turbocharging applications - its more than enough to counteract the pumping losses (ie the energy used to pull in air) and pressurise the input charge enough to give a useful increase in torque at low revs (which the 1300 definately needs). Its a similar concept to the Paxmans Hy-Dyne on some of their diesels.
The question I have for anyone who knows is how would one switch such a device from the ECU/OBD system. I cant use the TPS because thats reading the position of the throttle not the RPM. I suppose another option would be some sort of connection to either the Crank sensor or the ECU directly. Does anyone who is more able with the electrics than me, which to be fair is not difficult have any ideas as to how between 1500-2500 rpm this device could be triggered, while being disabled for the rest of the time?
JJ mentioned he had turbo'd his car and it widened the power band - which using that method is exactly what its supposed to do. However alot of people wont have the tools, knowhow or money to do that.
What is effectively happening with that engine at the low end is the intake air is being compressed, unsuprisingly, more air gives more power because more fuel can be burnt but more importantly pumping losses in the engine are reduced and therefore the engine will rev more readily at any given RPM.
The problem with the accent is until it hits its torque band its a little lethargic and wheezy and it doesnt rev all that freely but putting on a conventional turbo is expensive...
There are kits using an electric system that claim a 1psi boost pressure but which are configured to switch on when the throttle is wide open. In that configuration they are pretty much pointless - because the intake system is already running peak CFM as everything is wide open. However what would the effect be if instead of e-boost coming on at high power, it was switched to activate between 1500-2500 rpm? I strongly suspect that while its true that 1psi is no real use in turbocharging applications - its more than enough to counteract the pumping losses (ie the energy used to pull in air) and pressurise the input charge enough to give a useful increase in torque at low revs (which the 1300 definately needs). Its a similar concept to the Paxmans Hy-Dyne on some of their diesels.
The question I have for anyone who knows is how would one switch such a device from the ECU/OBD system. I cant use the TPS because thats reading the position of the throttle not the RPM. I suppose another option would be some sort of connection to either the Crank sensor or the ECU directly. Does anyone who is more able with the electrics than me, which to be fair is not difficult have any ideas as to how between 1500-2500 rpm this device could be triggered, while being disabled for the rest of the time?