My DIYPNP install! Options

[lagos]

I finally found some time to assemble my DIYPNP kit today. :thumbup
The assembly process wasn't too bad. Everything was clearly labeled and the instructions were easy to follow. But if youre reading this and you bought an MSPNP, consider yourself lucky as soldering lots of very tiny components too up most of the day (and I'm still not done!).

I started out with this:


And after a few hours here is where I'm at!



This is the kit I'm using.
http://www.diyautotune.com/catalog/diypnp-...-kit-p-384.html

Along with the sequential injection mod.
http://www.diyautotune.com/catalog/diypnp-...-kit-p-386.html

[lagos]

Yes, I'm using MS2. We tapped it directly at the distributor. Do yourself a favor and get a 98+ oil pump with crank sensor setup. Mine ran (before the engine died) and could be tuned and everything, but it never turned on right (sometimes sent spark with intake valves open, sounded like a loud scrape, like when you tighten a thick ziptie, and then smoke came out the throttle body)

You need a 98+ oil pump, the 98+ crank timing gear and the crank sensor. It's a 36-2 wheel and I'm pretty sure the MS2 has the capability to decode it. It's a little bit more work than you'd want, but it for sure is a much more reliable setup.

For full sequential, if you want, you could also get the bracket for the cam sensor, the cam sensor and the cam sprocket with the single tooth. My 98+ engine I bought recently had all of that on it. I don't have any part numbers on had right now, though, sorry about that.

EDIT: I don't know if you've opened the stock distributor to take a look at the trigger wheel, but it's not a regular trigger wheel. It's weird in that it's got 4 slanted tooth. It's pretty advanced for its time, something only the OEM ECU can decode.

Before I bought the new engine, I was going to do a different setup that worked on a friend's MR2. I was going to use a rev1 5sfe distributor and 420a coils. I bought the setup but never used it, if you'd like to try that for a less involved setup. You need to do a couple of things though. You need to make hybrid plug wires out of your 5S plug wires and the 420a plug wires I have (you need the connectors for the coils since they're HEI female-type, vs our Male-type connectors) and you need to align the 24-tooth trigger wheel on the distributor to TDC and calculate the tooth you need to dremel out for it to be a 24-1 trigger wheel which the MS2 can read perfectly, and it's got enough resolution for translation to Crank Position.

Thanks for the advice, but its a little different with the DIYPNP and the basic MS2. The DIYPNP should have everything needed to decode the stock distributor. I have talked to at least one person who has their car running on it, and DIYAUTOTUNE developed an MSPNP based on it.

I'm getting a good clean crank signal from the distributor, but nothing shows up for the cam. Normally they tell you to use a resistor to "pull down" the threshold that the ecu is seeing with a 51kohm resistor. This is what they do to get their MSPNP units to work. However for me this did not work. I am taking my cam signal from the G1 input, and I'm thinking there might be some issue with my distributor. I'm going to rewire it to take the cam signal from G2 and see how that works. If I'm still having problems, I can run the signal through the LM185 conditioner, and hopefully that would resolve the issue. The real problem is that very few people have done this before, and there is no tutorial for me to just follow in someone's footsteps.

I really wish I had a spare 3sgte distributor here, just so that I could do all of this on the bench and spin the distributor with a drill. This would make things a lot easier to figure out, then to have to run out to the car everytime I make a small adjustment.

This post has been edited by lagos: Apr 16, 2013 - 9:40 PM