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Author DIY Remapping?
Steve X16XE
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Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
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27th Jul 15 at 18:40   View User's Profile U2U Member Reply With Quote
I've been looking at buying some sort of diagnostic machine and now looking into a laptop. Most of them are advertising the fact that they can remap cars. So why do people bother with paying many hundreds of £'s when you can just get a laptop/software to do it all?
taylorboosh
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Registered: 3rd Apr 07
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27th Jul 15 at 18:43   View User's Profile U2U Member Reply With Quote
Because if you do it wrong ....... Knock knock bang
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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27th Jul 15 at 19:02   View Garage View User's Profile U2U Member Reply With Quote
The cost of a dyno and other equipment to do it probably will normally trip you up
Steve X16XE
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Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
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27th Jul 15 at 19:10   View User's Profile U2U Member Reply With Quote
How can you "do it wrong"? Genuine question.
Kyle T
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Registered: 11th Sep 04
Location: Selby, North Yorkshire
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27th Jul 15 at 19:18   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve X16XE
How can you "do it wrong"? Genuine question.


What is your interpretation of mapping? What do you think is actually done to the car? Answering those will probably answer the "how can you "do it wrong"?" question.


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VrsTurbo
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Registered: 8th Jun 10
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27th Jul 15 at 19:20   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve X16XE
How can you "do it wrong"? Genuine question.


This laptops will allow you to put on generic maps written by someone else. If you want to custom map it's a lot more in depth.
Pete_vxl
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Registered: 24th Nov 06
Location: Lochgelly, Fife
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27th Jul 15 at 19:54   View User's Profile U2U Member Reply With Quote
Did this when I had an Astra GSI. Bought a KWPRO off eBay and bought a stage 1 map from a guy on another website.

Pretty dodgy and mental thinking back on it. As long as you save your standard map then you should be ok. My laptop froze once whilst mapping and the car wouldn't start. It was just a case of restarting the laptop and uploading again.

My car cut out once whilst driving so I put the standard map back on and left it there.
Steve X16XE
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Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
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27th Jul 15 at 19:59   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Kyle T
What is your interpretation of mapping? What do you think is actually done to the car? Answering those will probably answer the "how can you "do it wrong"?" question.


From fuel to boost (turbo'd cars). Ignition timing... Brain not working. Can't think of anything else right now.
VrsTurbo
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Registered: 8th Jun 10
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27th Jul 15 at 20:00   View Garage View User's Profile U2U Member Reply With Quote
Then you'll need a different application and you'll need to learn about checksums. Unless you have an aftermarket ecu it's not that simple.
Steve X16XE
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Registered: 31st Dec 06
Location: Barnsley, South Yorkshire
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27th Jul 15 at 20:03   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by VrsTurbo
This laptops will allow you to put on generic maps written by someone else. If you want to custom map it's a lot more in depth.


I'd rather do/learn to do custom remaps. That way you'd know it'll be right and the other guy hasn't missed anything.
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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27th Jul 15 at 20:10   View Garage View User's Profile U2U Member Reply With Quote
you cant do a custom map without a dyno and shit loads of other equipment.

jesus wept
BarnshaW
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Registered: 25th Oct 06
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27th Jul 15 at 20:21   View User's Profile U2U Member Reply With Quote
custom maps will require much more detail, AFR's etc, its dangerous ground if you dont know what you are doing, last thing you want is a shit map and it running lean and the engine imploding.

Most mappers have det cans, AFR, EGT sensors etc and have years of experience, not something you really want to scrimp on unfortunately.

Might be able to get away with it more in the turbo diesel cars, more forgiving and alot of generic maps which are meant to be not half bad.
VrsTurbo
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Registered: 8th Jun 10
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27th Jul 15 at 20:26   View Garage View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve
you cant do a custom map without a dyno and shit loads of other equipment.

jesus wept


Yes you can. It can be road mapped.
Steve
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Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
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27th Jul 15 at 20:36   View Garage View User's Profile U2U Member Reply With Quote
Yes true
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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27th Jul 15 at 21:16   View Garage View User's Profile U2U Member Reply With Quote
I did mine myself with my laptop.
Robin
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Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
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27th Jul 15 at 21:18   View Garage View User's Profile U2U Member Reply With Quote
To be honest, a generic map which you get for a couple of hundred quid is perfectly possible at home with not a lot of equipment.
Darryl H
Organiser: South Central
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Registered: 19th Nov 09
Location: Camberley Drives: Porsche 944
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28th Jul 15 at 12:22   View Garage View User's Profile U2U Member Reply With Quote
I had a base map on my ECU that I've altered and actually improved the way the engine behaves. Spent a couple of evenings with a mate doing a road map. My software makes it very easy to monitor everything going on in the engine though.

If I didn't have a base I wouldn't be as inclined to try it. I found it pretty fun to do though.

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DaveyLC
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Registered: 8th Oct 08
Location: Berkshire
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28th Jul 15 at 12:43   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Steve X16XE
How can you "do it wrong"? Genuine question.


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