It's not just one setting to bump up there are several... They have to work together. That's where you need to read a bit here. Its up to you, but from this info its still worth looking at.Originally Posted by dhworkin
It's not just one setting to bump up there are several... They have to work together. That's where you need to read a bit here. Its up to you, but from this info its still worth looking at.
I definitely need to read more. I raised the AE vs map and raised AE vs TPS in the tables. I’ll keep looking, I’ve been searching with obviously no luck.
I'll be interested in your results and if you can solve it, I have a similar problem with my Vortec headed van.
I've tried adding AE in different tables without much luck.
The van goes okay but it can't break traction and if I nail it on the motorway it pops back through the intake and then goes for it, logically I've tried adding AE fuel and removing it when I just about drown it but no matter what I've tried I can't get it to light up.
Which is frustrating, I was talking to a guy on the weekend and he was saying how his stock little V6 Astro van breaks traction almost too easily.
I almost wondering if I'm trying to tune out another problem, it goes lean on the O2 sensor when I stand on it, I've been wondering if the lean spike I'm seeing is from an ignition missfire under load?
Kitch, it would be ok with me if you solved the mystery before I do. I caught the act in the first part of this log, I didn't stab the throttle, I eased into 81% throttle and the timing goes the wrong wayvvvvvv.xdl
The vortecTest bin you last had above has a very minimal increase over stock on AEvs Map (lasts for about 0.1 of a second at first) and zero increases on AE vs Tps (takes over and lasts about 2 seconds). Even my really mild van with a 196 cam required some increases when vortec heads were put on. There is AE and PE. If it stays lean after about 2 seconds you may have to look at your PE.
"I would multiply the whole TPS AE table by 1.25 and the MAP AE table by 1.5 and see if that gets you closer. It is easier to trim back too much fuel than deal with the consequences of not having enough. The time in those tables is pulsewidth added asynchronous. The PCM drives the injectors both at the same time to deliver it. uSec is microseconds fwiw. From what I remember 1000 usec is 1 msec." Is the advice from Fast355 I started with for vortec heads. I dialed it back from here for my application but it was a start. Remember if you are lean after 2 seconds it is not AE any more, you need to look at PE.
http://www.gearhead-efi.com/Fuel-Inj...ions-7747-help is a good thread to read too, even though it's not the same computer. They did get the short and long term AE mixed up though.
The spark table on your last bin shows as the vacuum drops so does the timing advance. This would be normal function. When you transition from light load to 80% throttle the timing should drop off to prevent knock.
I found the problem! I removed the Ostrich 2.0 and installed the harris memcal directly. It runs great compared to anything that went through the Ostich. I cant wait to build a chip and see what it will do with a proper tune. Where do I go from here? Do I buy the hardware to burn a chip after every datalog?
Sorry I haven't read back through everything, were you running a direct copy of the Harris chip from the Ostrich 2.0 or were you running different a modified file before you changed to just the Harris memcal?
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