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MOT time is not normally as issue with my clean rust free low annual miles slicktop.

My MOT testers are well used to the car.

Last year he commented that the emission reading was "close" to the testing limit.

Well its going to be on a modded car which is set to avoid the danger of going lean anywhere at any moment.

So today My pal Steve helped me create an "MOT" map on the multimap option Emerald ECU I use.

Its just a copy n paste of the real map but at anything from 750 revs up to 2500(MOT fast idle test revs) he has taken out 3/4 points on the fuel.

The result is brilliant.:clap:

At normal tickover(950/1000) the AFR sits at mid 14s which should pass but with one flick of the switch it goes out to 16/17.

And similarly at 2500 revs.

The results are viewable constantly of my AFR gauge

The car still revs up on no load .

It just wont drive very well!!:whistling:

No matter "driving" isnt part of the test anymore

If I was more internet/smartfone savvy I would have done video of it............but Im not:thumbdown:

Featured Replies

  • Author
Did Steve work for VW prior? :lol:

 

Ha Ha!! He didnt it was me who came up with the idea. It is a complete "cheat" of course. I might not need it but its nice to have the option on the test.

I cant do "map alterations" personally that is Steves paat of the operation.

The Emerald has three map options.

On mine Map 1 is the real power map as set by Noz on the Future Motorsports Rolling road.

Map two was unused but is now the "MOT" map

Map 3 is a 95 octane map that I colud use if I had to drive in anger and only had 95 available.

I think it is a slightly retarded ignition map??

Driving normal roads is OK on 95 anyway on my NA but max power was on a 99 octane fuel load.

  • Author
There is always a solution to any problem Pete :thumbup:

And once you find the solution there ceases to be a problem!!!

My MOT man will love this when I show him cos Im going to demonstrate

it to him on his own engine gas analyser :biggrin:

 

.................................................................................

after he has pressed the PASS button of course!!!

There is always a solution to any problem Pete :thumbup:

 

yep Gary there is...£50 notes work very well for emissions at MOT time:devil:

  • 3 weeks later...

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