eyefi Posted August 10, 2004 Author Share Posted August 10, 2004 Originally posted by Ian C That wasn't a metaphor. That was a comment. -Ian well done Quote Link to comment Share on other sites More sharing options...
SKI Posted August 10, 2004 Share Posted August 10, 2004 I saw a comet once but it was smaller and did less damage than Monkeys' metaphor Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 10, 2004 Share Posted August 10, 2004 Originally posted by Ian C I've got a power dip around 3750 to 4000rpm thanks to the transition point and it goes lean for me. I've got it fattened up but then the areas either side go rich. It is, in my opinion, tuneable with an E-Manage but I'm still working on it on mine. (brace yourself Terry) it's tricky with an AFR adjustment piggyback because of the extrapolation performed between load sites, if there is a small area where things go strange then not only do you need a start and end load site but also a lead-in lead-out site as well to counteract this extrapolation by flatlining it. As there are some very linear areas of the map and the E-Manage has 16 rpm sites, I reckon sacrificing some resolution at linear parts of the rev range is worth it so you can cluster four load sites around the 3500-4000rpm area to tune this behaviour out. So there -Ian A comment like " I was considering doing that ", doesn't really cut it... Quote Link to comment Share on other sites More sharing options...
Wez Posted August 11, 2004 Share Posted August 11, 2004 Originally posted by Ian C As there are some very linear areas of the map and the E-Manage has 16 rpm sites, I reckon sacrificing some resolution at linear parts of the rev range is worth it so you can cluster four load sites around the 3500-4000rpm area to tune this behaviour out. That sounds like a good plan to me, you generally do the same thing with replacement ECU`s as well, you would sacrifice some resolution across the midrange to give you more resolution for idle and spool area. Prime example on the AEM is the base maps go way upto 10500rpm which I am never going to run so drop the top of the map to approx 8500rpm and gain some load sites early down to give finer tuning around idle etc. Quote Link to comment Share on other sites More sharing options...
dandan Posted August 11, 2004 Share Posted August 11, 2004 What do you mean regarding the Mines ecu Terry? What difficulties is that causing you to tune the car, is it EManage related? I assume this is Dude's car?? Quote Link to comment Share on other sites More sharing options...
Guest Terry S Posted August 11, 2004 Share Posted August 11, 2004 No not Dudes car, we only have that on a SAFC1!!!!!!!!! Just most cars with a stock ecu and a piggyback seem lean at that point, Matt's seems rich. It has a moody ECU with no fuel cut and a 8k rev limiter. We think it may be a Mines, but the tune around that point seems hard to get into the 11's Quote Link to comment Share on other sites More sharing options...
Ian C Posted August 11, 2004 Share Posted August 11, 2004 That ECU seems like a pain in the ass To be honest if you are going for a piggyback system you probably need a stock ECU to work from otherwise you are asking for trouble. See Matt H for details -Ian Quote Link to comment Share on other sites More sharing options...
Matt Harwood Posted August 12, 2004 Share Posted August 12, 2004 I will be trying a stock ECU for comparison. I feel you may be right Having said that, apart from my 'rich' spot, the car drives great! Quote Link to comment Share on other sites More sharing options...
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