Re: Tuning larger LT-5 cams
You just had to go and use the "P" word didn't you!?!?!?!?!?
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Re: Tuning larger LT-5 cams
Here's a very interesting set of graphs that describe idle activity and how each condition can be addressed through tuning. There are 9 graphs. If you mouse over the graph it will present tuning suggestions for what are classified as
PID controls (Prop Gains, Integrator, Decel). http://www.online-courses.vissim.us/...controlmap.htm Thanks to Saar on ThirdGen.org for finding this little gem. |
Re: Tuning larger LT-5 cams
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I've got a wazoo guy graciously stepped up to loan me some nice cats and hopefully I can get this stroker to blow clean I believe 48 HC is going to be a BIG challenge as even the stockers are failing at this level it's ridiculous that VA cut the standard from 98 to 48. cars are getting any cleaner as they get older [-X |
Re: Tuning larger LT-5 cams
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Re: Tuning larger LT-5 cams
Driving the car back from BG was a low point for me. The car felt like it was running like Sh*t. MPG was not very good IMO. There is a rhythm to a well tuned motor and the trip back from BG, it sounded like a out of control orchestra. Just didn't have that harmony. One of the things that has really
made this package sing is playing w the SA tables. More timing has brought it together. Adjusting the Accelerator Enrichment also helps with giving you that sense of being directly connected to the motor. You tune it to eliminate that count to 1 before you actually feel the response from the go pedal. At cruise now you get just a steady purr of the exhaust with no motor sound coming from the front end. Happy noise! So now the tuning is focused on things like getting rid of the annoying surging on decel for example. Little nit picks but since I don't need to live with it, I choose not to. ;) With Part Throttle pretty well locked in, I'm looking forward to optimizing WOT. The cool thing about ECMs and tuning the ZR-1 is how you can create a Jekyll and Hyde car. A motor perfectly fine idling at 775-800rpm with little to indicate that there's a motor under there producing 500+ hp and 1/4 mile speeds of 120+. As the Octane Magazine describes it, the perfect Q ship. I love sleepers. |
Re: Tuning larger LT-5 cams
Here's a bit of the "proof of the pudding". A vid of idle after my last calibration change. Very nice.
http://i187.photobucket.com/albums/x...roIdle2vid.jpg |
Re: Tuning larger LT-5 cams
Dom,
Unreal tuning! I want a dyno and 1/4 mile run ASAP!!!! :cheers: David |
Re: Tuning larger LT-5 cams
Dave,
Here's one with camera resting on plenum. http://i187.photobucket.com/albums/x...eroIdlevid.jpg |
Re: Tuning larger LT-5 cams
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Anywayz, Dom, I really eat this tuning stuff up. (Comes from decades of tuning rifles for competition, I guess.) Ya gotz me on the edge of my chair, buddy! :thumbsup: P. |
Re: Tuning larger LT-5 cams
Jez Dom...the camera isn't even moving:jawdrop:
Way to tune Dude! |
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