CARBURETION and your Large/Small port 16V 4AG

[BenR]

dr.occa Wrote:

BenR Wrote:You can still use the Stock ECU to control timing if you continue to provide it with a semi stable map and TPS signal, its not redundant.

If not, why bother with all this hard work for sorting a crap ignition curve when you cna just buy an ignition only management system?

And it wouldn't be more work to rig up a "semi stable map" signal along w/ jury rigging the TPS just to be able to use the efi ECU (which you won't be able to manipulate w/o extra work and extra money)? I'm not arguing that it isn't do-able. Anything can be rigged up. The information provided above is to facilitate not to convolute the process in converting to a carbureted platform. What I've outlined above is straight forward.

As for a "crap ignition curve" I would ask, how would it be "crap"? I guess it would be schite if compared to let's say a mega-jolt, haltech, electromotive, etc...stand alone system. But I would argue that they all would produce a turds worth of timing in unskilled hands and conversely. Maybe then, our japanese counter parts using the archaic kp distributor adapted to the 4AG haven't a clue that they're using "crap" to achieve only a "crap ignition curve".

Do this, go through what's been outlined above and show where failure would occur in the process drawn out. If there's an even quicker, affordable(a method accessible to all that wouldn't necessitate illegal activity) and easier option w/ an =/> effect produced then by-all-means please share.

Sorry, am i loosing the plot or is using the stock ECU a simpler and easier affair than buying aftermarket ignition components only to be lefth with an rpm based advance curve like something out of the 70's?

Tap the inlet manifold on each runner, run to a vacuum manifold to feed the vac and the brake servo. Keep the dizzy feeding the ECU with speed information, adapt the tps sensor to the carb spindle (not really an issue if your considering jigging a KP dizzy up to fit a vage head). And to have someone remap it would cost what, a couple hundred euros to tweek the tps value settings and ignition map to suit the rapidly increasing map signal with throttle opening?

In my eyes this seems like the fastest, easiest and cheapest way to get a 3d ignition curve that would provide more torque and economy everywhere over a 2 d curve that platues at 3000rpm:S

Or, if your feeling fruity, 380 euros will buy you an igniton only ecu, then put on a toothed front pulley, a tps sensor, away you go, map your own curve and have infinate adjustability for any further advances in engine specification you have.

As for the japs, every JDM import, not matter how 'mint' requires days of work to fix the bodges they love so much. Just because its from japan doesnt mean its good, its like anywhere else, a few good outfits and the rest at monkeys.