Kwanza, Nik, MR2Swift I need your help..., Same stupid questions... Options

[doGGy]

The idea:

Got ahold of MR2 4AG Blue top Engine.. Everything is included,then i mean everything i mean everything all the sensors and etc... it is from my friend car, and it was sitting tin his garage for ever, so he desided to get rid of it.. 150$ for it was too fair so im getting it....

The bottom end has some problems but i dont even care, as long as im on the route to convert it to 7AGTE...


The main Question:

Wiring is MAP based, it has all the sensors and etc etc... BUT, im going with Megasquirt and im going with 4 ignition coils (direct ignition from peugeot). Question - what else i should need to make the engine wiring work propertly with this setup?

Optional Question:

Is everything Bolt on with the 7A and 4AG head? power steering and etc? (i dont have air cond so i think this aint a big problem)...
What CR i should get using 4AGZE pistons in 7A block and using 4AG head? I knwo what ignition chamber on 4AG is more flat so less volume and as long as with 7A head i get the 10.8 CR what should i expect witht the Blue top head?

Thanks guys, i really need some info quick, cuz i need to make the desidion about this setup - is it worth all the hastle....

[Coomer]

If you are loosing the 4ag ECU completely you will need megasquirt and spark. It's kinda a goofy looking set up (big sensor set up on the crank) but it works like a charm.

Do you mean Megasquirt 'n EDIS? With the latest version of Megasquirt 'n Spark(024 I believe), people have been experimenting with using their stock ignition system with Megasquirt. Megasquirt 'n EDIS requires that a 36-1 trigger wheel to be added to the crank pulley, and then a VR(variable reluctance) sensor be installed very close to the trigger wheel. This is the route that I plan to go...EDIS provides a hotter spark, and then I can ditch my ignitor and coil and distributor, for a cleaner engine bay.

My only problem with megasquirt is what is going to run all of the little parts of the car the ECU is tied into. That is why I'd never run one on my daily driver.

What exactly are all the little parts you're referring to that are tied into the ECU? I may have overlooked some stuff, but it appears to me that the only things that the Megasquirt setup doesn't account for currently is the A/C and stop lights idle up, the check engine light, diagnostics connector(which is already removed from my car), and the catalytic converter warning light(my ECU has this pin, but I don't think I've ever read about this warning light on our Celicas...I don't have a cat anyway.) Please, let me know if there's anything I've overlooked.