Yes, I realize I haven't posted here in about 2 months, but I am still alive. Starting a new job and moving at the same time makes it kinda hard to post on stangnet, but anyway I'm back.
Here has been the timeline on my car this year. Got the H/C/I done in april and it ran like an SOB at WOT, but it wouldn't idle worth a s***. So I ordered a JMS chip in may to try and get everything taken care of. I have had problems ever since I installed the chip. The car idles now but doesn't run worth a s*** WOT. I got m car dynoe'd last night and found out why.
Attached are my last two dyno runs. We made 6 attempts but never could make a complete run. My A/F would ok up until about 3500-4000 RPM, and then it would ge really really lean in a hurry! I'm talking like above 18-20:1 lean! We had to shut down pretty quickly each time. (Fuel Pressure was at 43 w/ vac removed and timing at 10* for all the runs). The second dyno run attached is with the chip off, but I don't think the computer had time to reset, since it did the same thing on the dyno and acted like it had the chip in when I drove it home after that (still idling, but running like crap). I drove the car this morning and it seems like the computer is starting to reset itsself. It now won't idle at all (like before) and runs better at WOT. It now doesn't go really lean until about 4800-5000 and that number is getting higher the more I drive the car. Suggestions?
I'm going to call JMS Monday (couldn't get a hold of them today) and ask for my money back. This chip has been ****ty from the start. I'm going to go drive up to KC and get a chip burned on the dyno.
Its good to be back!
*OK, the dyno charts are in a PDF and I can't get them uploaded. If someone can host a 512K file I would appreciate it.
Here what the dyno looks like:
with chip:
smooth until 3600, 220HP, 300TQ, then it gets real bumpy and drops, this is where we shut down b/c of the sever elan condition
without chip immediately after:
same as above, except 229HP and 311TQ b/f shutdown at about 3900.
Here has been the timeline on my car this year. Got the H/C/I done in april and it ran like an SOB at WOT, but it wouldn't idle worth a s***. So I ordered a JMS chip in may to try and get everything taken care of. I have had problems ever since I installed the chip. The car idles now but doesn't run worth a s*** WOT. I got m car dynoe'd last night and found out why.
Attached are my last two dyno runs. We made 6 attempts but never could make a complete run. My A/F would ok up until about 3500-4000 RPM, and then it would ge really really lean in a hurry! I'm talking like above 18-20:1 lean! We had to shut down pretty quickly each time. (Fuel Pressure was at 43 w/ vac removed and timing at 10* for all the runs). The second dyno run attached is with the chip off, but I don't think the computer had time to reset, since it did the same thing on the dyno and acted like it had the chip in when I drove it home after that (still idling, but running like crap). I drove the car this morning and it seems like the computer is starting to reset itsself. It now won't idle at all (like before) and runs better at WOT. It now doesn't go really lean until about 4800-5000 and that number is getting higher the more I drive the car. Suggestions?
I'm going to call JMS Monday (couldn't get a hold of them today) and ask for my money back. This chip has been ****ty from the start. I'm going to go drive up to KC and get a chip burned on the dyno.
Its good to be back!
*OK, the dyno charts are in a PDF and I can't get them uploaded. If someone can host a 512K file I would appreciate it.
Here what the dyno looks like:
with chip:
smooth until 3600, 220HP, 300TQ, then it gets real bumpy and drops, this is where we shut down b/c of the sever elan condition
without chip immediately after:
same as above, except 229HP and 311TQ b/f shutdown at about 3900.
Sometimes you make changes and the eec doesnt adapt like it should and you go through this running lean BS. For example- I ran a full trickflow combo with a 76mm c&l maf. A/F was dead on perfect, I tuned it myself. A year or so later I made some combo changes, Longtube headers, had the heads milled .020" and an FTI custom grind cam. The car was now very lean on the dyno. Most people can get by with 24lb inejctors with that combo, but not me and my friend. We both needed 30's 
The chip should fix your issues definatly.
