I was running mine with the OEM ECU for a long time and don't recall that they got hot. I did touch them a couple of time after a few mile drive...

Two of them finally took a crap while I was burning a file to the Megasquirt ECU.

I guess the extra dwell will stress them even if does not fry them right away.

Alright, I have the COPs installed and the wiring done, but the car is running pretty bad, almost like a lawn mower. It doesn't seem to be a non-firing cylinder as we pulled the clips off all four one at a time and it still ran (didn't start w/o 2 plugged in..), I'm pretty tired so I might have missed something. I didn't trim the sides of the COPs so they are sitting about 1/4" off the valve cover right now... I'll check again in the morning.

Could it be because I didn't change the dwell timing on the Hydra? I only started it to make sure it actually started..

Sounds like it's not running off all cylinders. With it idleing, pull one plug off at a time. No change in idle means that cylinders not working, if the car dies that's one of the two cylinders it's most likely running off.

I'm guessing you're only working on 2 cylinders, either 1&4 or 2&3.

Does anyone know where to find the Dwell time setting in the Hydra app? There's nothing even close to that naming in here..

I believe I have found what I am looking for, but why the hell is it listed under "2D Engine Calibration" and not under Ignition, wtf. Here's my old map vs my new one, using the graph supplied by Jason. The graph and timing on the bottom-middle is the default in the hydra left by FM. Now to test it..

http://img155.imageshack.us/img155/9...ingchanged.png

That resulted in the car not starting at all. Now I am confused.. :dunno:

COPS In!

I picked up COPS from a V6 Toyota which are the longer style. I had my local machine shop make up a mount in aluminium which gives me lots of meat to work with for mounting the COPs in place. I made up a plug and play harness incorporating a dwell reducer (using Jason's circuit) which practically disappears from view unless you know what you're looking at.

I don't know what the relative availability of V6 to I4 COPs is but this mount opens up an extra source to use. If there is interest I'll have my guy quote me on a few. If no interest then I have a unique install :laugh:

stupid question, but on the 90-93 harness how come a 1k resistor is needed between the tach wire and the 12v wire if your running a megasquirt? what purpose does it serve? i looked around and couldnt find anything about it.

the stock ECU provides a pull-up to power the tach output signal. That resistor from 12v to the tach signal, does that same.

got cha. thanks!!!

ive been trying to google my big time but cannot find the answeres.

from what i have read all toyota cops have the same 4 pin layout.
my question is will the yaris/prius cops from the inz-fxe provide enough spark to better the na mx5 stock system?

only reason im asking is i am having trouble getting the 1zz ones at a reasonable price in aus.

Cheers guys

Yes you are correct that they all have the same pin out. However as that I work as a tech for Toyota. That are all different in length and width. So you just have to try them out. I do have a call into are FTS agent on the output range. I do however believe that they are all going to be the same to 4 cyl engines. I do know that 2gr v6 engine they are to long and the shaft is to wide.

why not turn the plate around 180° so the clips point towards the firware?

No reply from the FTS agent yet but we do have a ton of coils laying around the shop. I'm going to check the fitment of all other coils i have laying around out during lunch. Have been meaning to do this anyway.

Assuming firware=Firewall
Yup, I could do this, but why? Am I missing some benefit?

looks cooler?

installed the prius coils they fitted fine.

all up took me about 2-3 hrs to do the conversion.

as soon as i get my clutch slave cyl il'll be able to test if i fixed the misfire i was getting in second on boost.

Just installed mine on my preboosted 1.6L. the difference is Amazing! After the test drive I began to wonder the same thing someone else posted on but never got answered here. Has anyone dyno'd before and after? I know you cant sit in a car and feel a certain hp increase but I know for a fact that thing woke up a great deal! I definitely noticed Quicker Revs, Better Acceleration, way better idle, and im pretty sure my mileage is increased. its day one so I couldnt tell ya. anyone who questions the COP upgrade is an idiot and are too dumb to take chances. took me 2hrs to wire and solder up everything before work. fired right up and took the 20min drive to work with no problems haha. gonna work on a bracket to hold em down and clean up the wiring tomorrow.

Begi-S coming in 1 week

I'm confused what exactly I need. I have a harness for a 96 but need it to work on a 94. I need the extra connector that plugs into each cop plug, but which part number is that? I have toyota coils.

I have a whole Toyota harness if you want it. Comes with the Toyota wires and plugs. Just splice it in.