Rebuilt for next 150K.. and the Stroker is running !

MXer · Post by **MXer** » Tue Sep 09, 2008 2:25 pm

Not a bad thought, a coil is cheap considering what I have invested.

Danteneon · Post by **Danteneon** » Tue Sep 09, 2008 4:32 pm

Wow, I completely missed this thread. Looking great man! There is always those annoying problems that plague a major job like this

Oh, and I'm going to move you to the project log. You have more than deserved it

quicksilvr · Post by **quicksilvr** » Tue Dec 30, 2008 1:47 pm

I read most of this through. Did you get your misfire issues fixed? Also, I'm curious if you continued to get P0140 when cruising on the highway....but not around town.

Update?

MXer · Post by **MXer** » Wed Dec 31, 2008 11:29 am

I actually made the call to install a Megasquirt. I still have the miss, but to be honest, I had to take a break from it for awhile. I'm back on it now and drove it yesterday. The wireing harness is a real bugger for the megasquirt. I'm going to make it a quick disconnect.

quicksilvr · Post by **quicksilvr** » Wed Dec 31, 2008 5:42 pm

I see. Did you buy a pre-built MS? Just wondering.

I was thinking that the S/S AFX ecu still reads the downstream O2 sensor, which will then throw P0140.

Also, I don't think that the S/S ecu is aggresive enough for your setup. Meaning, I think the computer was overwhelmed with the upgraded physical setup, and ran rich all the time. I know first hand from my experience that the stock ecu runs like crap, runs rich, misfires, gunks up O2's, etc.....when used with aggressive head/cam/exhaust/compression setups.

My car wouldn't run right no matter what I did. Then I switched to the AFX Race, which is considerably more aggressive than the S/S, and the car started running like a champ. All is takes is a day or two of running excessively rich, and then you end up with other problems BECAUSE you were rich.

MXer · Post by **MXer** » Thu Jan 01, 2009 2:59 pm

On the Wideband O2 sensor, I see 14.5 - 15.2 when running and I see this even if disconnect the O2 senor input signal to the PCM. I'm thinking the PCM is running the injectors at there max correction factor. Still scratching my head for now. I was hoping to get it running smoothly before installing the MS so I knew I had a good base to start from.