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Tom -
Like Steven indicated, I had specified for me 65 lb. injectors. When sizing them, we were hoping for up to 650 hp and 700 ft-lbs., but the Torker II (which I noticed that you have from an old thread) is way undersized for a significantly stroked BB (even with some work done to it). After thinking about my (apparent) under-performance at the dyno, we realized that the manifold was the major culprit. (I got 491 hp and 548 fp, but who's complaining). 48 lb. injectors might work for my current application, since, I suspect, that they would run near 80% DC (duty cycle) at max performance. My 65 lb. injectors log at 60% DC at max performance, but I am only getting 500 hp instead of the expected 650. If I suddenly become rich and get a set of those new 58mm TWM throttle bodies, then, the 65 pounders will be needed!
I'll shot you both the Excel file.
(About the only thing that I am tweeking with is the cold start parts of the program. Since you only get 1 try at it per day, it goes pretty slow. Also, I am not entirely sure which correction direction helps, in certain cases. I don't think that the screens on my program - CCom for SpeedPro - would be similar to what you may have for starting and idling aspects. I do think that the 3 spreadsheets that I will send you are quite common to any program. A couple of tuners that I have talked to indicate that the numbers are similar - surely the timing and A/F ratios will
be).
The only running problems that I have encountered since I felt that I was 'fully' tuned has been some backfiring on deceleration (to be expected, and, I would rather have it rich than lean in areas of transient operation of the program ), and, on occasion, a backfire or total short drop off in engine revving on a moderate to hard acceleration while making a turn (and it may be only left turns).
Another curious thing that I have had since the beginning, my left EGT is 150 to 250 degrees lower than the right EGT. I haven't changed the right thermocouple to other cylinders, but I have changed to left one to the highest reading cylinder, since the right EGT is higher than the left, and, from the dyno data, the cylinder for the right EGT was the hottest on the right side. My ECU O2 sensor is on the right collector (at a very precisely measured point - which is supposedly quite critical for accurate functioning of the ECU), but I have a separate O2 sensor on the left collector that reads out on an analog gauge. Strange thing is that the left reads more lean than the right even though the EGT is lower. Go figure. My right EGT is about 1450 while running. That is about the max it should be, but my setup guru felt OK with it. The left one is about 1250, which is about what the target should be.
Any ideas about these situations? I may end up getting the module where you can individually tune each injector.
Regards,
Frank
Last edited by Naja; 02-10-2003 at 09:03 PM..
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