Hey Guys,

Had a fabia vrs of mine recently remapped, now it seems i'm getting a on average 8 mpg less on town driving and about 4 less on motorway driving, also it seems the ECU is very laggy compared to what it was before, it used to read pretty accurate mpg figures back to me in real time, now it's really slow when changing like it doesn't have the correct readings, and also seems to burn a lot more fuel on idle, any ideas?

ps it isn't my heavy right foot I only took it out for a blast once or twice after i got it remapped, and reset the mpg reading since

Hi.

Mapping the ecu shouldn't change the way your instruments show your MPG, or effect the update rate.

It could however be related to the fuel "calibration" map, where a set mg of injection is referenced by a injection duration.

If they havent changed the axis it'll still think it's injecting say 50mg when in fact the injection duration is set to 55mg.

Probably best to go back to your mapper and see if they can answer your enquiry.

Kevin

Hi.

Mapping the ecu shouldn't change the way your instruments show your MPG, or effect the update rate.

It could however be related to the fuel "calibration" map, where a set mg of injection is referenced by a injection duration.

If they havent changed the axis it'll still think it's injecting say 50mg when in fact the injection duration is set to 55mg.

Probably best to go back to your mapper and see if they can answer your enquiry.

Kevin

Ok thanks Kevin i'll drive it over weekend just to make sure, then i'll ring them up Monday if it isn't any better, it was a stock remap not a custom one

Ok thanks Kevin i'll drive it over weekend just to make sure, then i'll ring them up Monday if it isn't any better, it was a stock remap not a custom one

Where was it remapped?

Awesome-GTI Manchester

Where was it remapped?

Awesome-GTI Manchester

Hi.

Mapping the ecu shouldn't change the way your instruments show your MPG, or effect the update rate.

It could however be related to the fuel "calibration" map, where a set mg of injection is referenced by a injection duration.

If they havent changed the axis it'll still think it's injecting say 50mg when in fact the injection duration is set to 55mg.

Probably best to go back to your mapper and see if they can answer your enquiry.

Kevin

Great info Kevin. I've been thinking about this recently as I've seen some maps were by the axis haven't been altered but the calibrations have.

I take it's similar to how tuning boxes give inaccurate mpg readings?

Hi.

Mapping the ecu shouldn't change the way your instruments show your MPG, or effect the update rate.

It could however be related to the fuel "calibration" map, where a set mg of injection is referenced by a injection duration.

If they havent changed the axis it'll still think it's injecting say 50mg when in fact the injection duration is set to 55mg.

Probably best to go back to your mapper and see if they can answer your enquiry.

Kevin

Would I be able to check any of this using my VAG COM ? with VCDS checking any logs or anything

Ta

Log channel 1 and I think channel

3. Channel 3 should have info like drivers wish, torque limiter and IQ via MAF. If its not 3 it'll be close by.

Where you based?

Log channel 1 and I think channel

3. Channel 3 should have info like drivers wish, torque limiter and IQ via MAF. If its not 3 it'll be close by.

Where you based?

Hi

I'm near the trafford centre!, I can travel if you can give us a hand

Whatever iq is the lowest from the drivers wish/torque limiter/smoke map takes priority. This should then match channel 1. Eg if 65mg is the lowest value then this should show in channel 1. If it shows 60mg in channel one then the axis haven't been changed.

Or post the results and I'll check the duration from channel 1 and I'll see if I can work it out.

Hi

I'm near the trafford centre!, I can travel if you can give us a hand

Yeah no probs. sent you a pm.