I'm currently building a closed deck EJ20 engine with forged pistons, JDM EJ20 Twin Turbo heads and a TD05 size or similar turbo. Full exhaust mods. It'll be running on MY96-MY98 sensors and meters. I want to realise engine power around 300 hp. What's the best choice for an after market programmable engine management system (fuel, boost, ignition mapping).

Cheers,

Marnix

[Edited by LeoneTurbo - 6/18/2003 4:52:55 PM]

 

could use link, link plus, motech (sp), pectel, autronics, erm..

plenty..

If you must have aftermarket instead of OEM.. then get rid of the airflow meter

David

 

Aftermarket systems are all new to me, so forgive me for asking this (dumb?) question: How would the engine know how much fuel to inject when it has no information about quantity of air going in? Or can that solely be based on engine rpm, boost level, throttle position, lambda and possibly engine temperature?

Thanks,

Marnix

[Edited by LeoneTurbo - 6/18/2003 6:56:05 PM]

 

Most aftermarket ecu's use the speed-density principle so the ecu is mapped according to rpm and boost/vac, most factor in throttle position as well.

bob

 

Speed density likes to have an intake charge temp sensor too.

 

Lambda sensor can also be made redundant. Weight saving to the extreme

 

Is there any way the system can control or check A/F mixture? I mean, it must be able to adapt to new circumstances, right?

Marnix

 

Well if you are prepared to put up with the extra weight that a lambda probe entails, you can generally run at least narrow band closed loop lambda control on most of these aftermarket ecus. I have full time closed loop wideband (not motec lsm-11 based "wideband") running on my Pectel, which certainly keeps A/F in check.