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Author ECU stuff
MikeH
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Registered: 3rd Apr 03
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7th Feb 04 at 15:05   View User's Profile U2U Member Reply With Quote

I'm in the process of researching and buying an OBD2 connector cable for my car to connect to my laptop.

Does anyone know where the OBD2 socket is in the corsa (i thought it was next to the fuse box but that looks like a high power socket to me now)?

I seem to have discovered the corsa B 1999 uses VPW variable Pulse Width (opposed to PWM or ISO) can anyone back this up for me?

Thanks
MikeH
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Registered: 3rd Apr 03
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7th Feb 04 at 15:19   View User's Profile U2U Member Reply With Quote

O has my car actually got ALDL?
DP.
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Registered: 21st Dec 03
Location: Stoke-on-Trent
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7th Feb 04 at 15:42   View User's Profile U2U Member Reply With Quote

the corsa C is OBD2 corsa B is ALDL and the socket is next to the fuse box and looks like this:


MikeH
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7th Feb 04 at 15:52   View User's Profile U2U Member Reply With Quote

Thanks..... i've been on the wrong track all the time thinking i needed an OBD2 connector.
MikeH
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7th Feb 04 at 16:02   View User's Profile U2U Member Reply With Quote

Yep its a 16 pin ALDL connector.

Now i just have to find an interface for it.
broster
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Registered: 6th Dec 02
Location: Drives: E39
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7th Feb 04 at 16:05   View Garage View User's Profile U2U Member Reply With Quote

what do u hope to gain by connecting ur laptop to ur car? im interested to know, can u u2u me back a reply please mate.
MikeH
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7th Feb 04 at 16:20   View User's Profile U2U Member Reply With Quote

I am a third year mechanical engineering undergraduate.

I am just interessted to analyse why my car does certain things as i drive...fluctuations in power etc.

I will also be able to log data from it and produce estimates of it's BHP and Torque.

Lots of things really...
DP.
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Registered: 21st Dec 03
Location: Stoke-on-Trent
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7th Feb 04 at 16:36   View User's Profile U2U Member Reply With Quote

with an interface and some software u can see real time data from all of your sensors
MikeH
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7th Feb 04 at 16:37   View User's Profile U2U Member Reply With Quote

Yes i believe so.
MikeH
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Registered: 3rd Apr 03
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7th Feb 04 at 18:56   View User's Profile U2U Member Reply With Quote

Going to try and make an interface but the circuit diagram i have only has info for a 10 pin aldl plug, mine is a 16 pin one.
Jamog
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Registered: 14th Sep 02
Location: Scotland
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7th Feb 04 at 19:22   View User's Profile U2U Member Reply With Quote

you have PM
miles
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Registered: 25th Mar 02
Location: plymouth Drives: Astra Sport
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7th Feb 04 at 20:21   View User's Profile U2U Member Reply With Quote

Sounds interesting if you can get it too work. Im not sure how useful it will be though.

For best results put your hand in your pocket and get a aftermarket management system. You'll be able to do loads more and data log. You'd also be able to adjust things and see how it responds. The whole concept of mapping what it does where and why, so your not doing anything new....

My power goes down to about 11v at over 7700rpm, I imagin the alternator cant keep up.

Why not just go on a rr?
MikeH
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Registered: 3rd Apr 03
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8th Feb 04 at 02:29   View User's Profile U2U Member Reply With Quote

Its a 'project' anyone can pay to go on a rolling road..... i'd like to have the ability to do it myself.
DP.
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Registered: 21st Dec 03
Location: Stoke-on-Trent
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8th Feb 04 at 21:32   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by miles

You'd also be able to adjust things and see how it responds.


You cant remap a standard ECU!
broster
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Registered: 6th Dec 02
Location: Drives: E39
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9th Feb 04 at 10:17   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by DP.
quote:
Originally posted by miles

You'd also be able to adjust things and see how it responds.


You cant remap a standard ECU!


not saying u cant as such but when i had a superchip fitted t omy car they mapped over the standard map, so in a way if he was able to he could modify the standard map surely or am i wrong?
Chris R
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Registered: 8th Nov 03
Location: brisbane, australia
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9th Feb 04 at 11:48   View User's Profile U2U Member Reply With Quote

you can actually.
do a search on 1227808 ( its a GM part #)

lots of stuff out there for it.

does any one have the pinout for the CFI ecu in the corsa B?

 
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