sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Tuning Megasquirtsowen
@sowen
Club Retro Rides Member 24
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A little advice/opinion wanted please, I've been fitting a Megasquirt system to my SD1 V8 over the past few months, it now runs, has an acceptable idle and drives ok up and down the road. I'm still reading and re-reading the tuning instructions with TunerStudio that came supplied with my ecu. Is it worth registering TunerStudio and upgrading to the autotune stuff that they offer? I can continue to spend all my evenings and weekends staring at a laptop randomly changing settings hoping I eventually hit the nail on the head, or take advantage of the software available and get it heading in the right direction quicker? I don't want to go to a pro or rolling road as I continually change, adapt and modify things, and have at least one other project that could benefit from going fully mappable efi  |
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Apr 13, 2015 14:15:08 GMT
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I upgraded and tried the autotune stuff, however the reading from my wideband seems to be too erratic for the ECU. It keeps leaning the fuel map way way too low and then the car won't run. I personally just got a friend to drive and kept messing with the map until its close. Like you i keep changing things so i'm not ready to go all out and pay someone with a road to look at it. I do know a guy who lives in the Warwickshire area who's hot on MS and i don't think hes too expensive. www.brcautomotive.co.uk/I'm sure Ed is on here no idea what his user name is though. Drop them a mail. |
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1987 Mini with Suzuki Swift GTI engine
2005 BMW E91 320D Touring
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sowen
Club Retro Rides Member
Posts: 2,245
Club RR Member Number: 24
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Tuning Megasquirtsowen
@sowen
Club Retro Rides Member 24
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Apr 13, 2015 20:56:12 GMT
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I upgraded and tried the autotune stuff, however the reading from my wideband seems to be too erratic for the ECU. It keeps leaning the fuel map way way too low and then the car won't run. I personally just got a friend to drive and kept messing with the map until its close. Like you i keep changing things so i'm not ready to go all out and pay someone with a road to look at it. I do know a guy who lives in the Warwickshire area who's hot on MS and i don't think hes too expensive. www.brcautomotive.co.uk/I'm sure Ed is on here no idea what his user name is though. Drop them a mail. I'll bear them in mind, possibly quite close to me too? My lambda readings are quite stable so hopefully I won't have too many issues with that. |
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goldnrust
West Midlands
Minimalist
Posts: 1,872
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Apr 13, 2015 21:25:03 GMT
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I'm surprised to hear you're having issues with autotune Alex 1380? What wideband are you using? Are you using the AFR target tables? Are you injector characteristics set right?
The only time I've had issues with auto tune is when the base map is so rich (richer than 9:1!) that the engine misses heavily, and this causes the oxygen sensor to actually read lean.
I've used the auto tune feature extensively on 5 different cars of mine and my friends. I always found it to be very good. Normally within an hour of driving around with auto tune running I've got a car that will work. Probably 4-5 hours later, and a bit of manual smoothing and fine tuning of the map and it's really good.
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Last Edit: Apr 13, 2015 21:28:34 GMT by goldnrust
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