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BTW I did 16 runs in that time period. Max was only 285. Given a 90 degree day, but Im sure the computer should have corrected for it. Picked up 16 hp in mid range, but my main concern now is the hiccuping and if the map volt should be at 2.7 or not. I think the car ran fine for the week I had it on 2.9 before the tuning.
Baseline dyno had my a/f at 13.4 in boost. Kind of odd since the last time I got it done I thought we got it down past that. Also my injectors are now at 96% duty cycle plus tapping into 100% a few times. Time to upgrade.
My conclusion so far is that unless 11.8 a/f is to rich, theres no way that running a 7 psi pulley could be safe without engine management. The FPR just would not be enough. Also I got to compare my runs with a 04 s/c S that was done there a couple weeks ago. Even the pure stock s/c the a/f was only around 12.9. I guess Im confused to much info and tuning for one day.
Originally Posted by Slows2k,Jul 10 2005, 09:27 PM
Sometimes you have to compare the BARO reading and set the MAP clamp/boost cut setting accordingly.
I can assume the BARO reading on your car was lower than 2.9V
Im guessing that was it. The scanner didnt read in volts. It came to 28.9. Dont know what measurments thats in. Not sure how the tuner converted that to 2.7 volts.
Personally I havent taken it to redline again yet, but I thought I saw the car hiccup around 8k before it hit redline on the dyno even witht he 2.7v.
Theres one more thing I wanted to mention, but I keep forgetting everytime I start typing someone interrupts my train of thought. some more.
Most people remove the FMU when using a e-manage, and go to a larger injector. You may want to look into changing the ratio of the FMU as well to give you more control of fueling via the injectors, instead of relying on the huge pressure increase for additional fuel.
Let me preface by saying I am by no means knowledgable person when it comes to al of this, but I have been trying to track down a problem ever since I got my car back after my accident.
My car displays something similiar to what you describe under WOT. I replaced plugs, tightened belt, did compression test and went back to the stock header/cat versus a header and testpipe. It ran great for one day. Next day(after about 600 highway miles), she was back to choking off again.
Here's a question I have: You closed the gap to possibly prevent spark blow-out and you're running at 11.8:1 A/F. Is it possible that you cannot burn all that fuel with such a small spark? I'm asking, because I don't know.
The gap went from .032 or so to now .028. It didnt really show any effect on the dyno run. Neither A/F nor HP changed from tha plug gap.
Heres what the the one plug looked liked when we where trying to track the problem down before the regapping.
Skip, are you running an emanage? How much boost and whats your vtec point? Also what did your a/f end up at? When mine "hiccups", the car kind of feels like its hitting a little rev limiter, and than pushes through. Also during it, my exhaust sputters and makes little machine gun noises.
BTW Ill post vids of the dyno run. The one run you can see the car hitting the 7500 rev limiter with the tuner shaking his head.
Next day(after about 600 highway miles), she was back to choking off again.
