Rubbish MPG after Revo stage 1

[8bit]

As above, since having Revo stage 1 map installed my mpg is awful, even on longish motorway type runs. I'm struggling to get over 28mpg on runs I used to hit low 30s on, even when I have to take it easy cos the mrs. is in the car.

Checked fuel trims the other night and long term sits between -7.0 and -7.8. Thermostat and CTS are fine, coolant temp is fine. Lambdas are fine as far as I know, post-cat one was changed last year. No fault codes. Recently changed tyres and pressures OK last time I checked.

Open to ideas...

 

[jase750]

*cough* crap map * cough*

 

[8bit]

*cough* crap map * cough*

The car made 285bhp on this map, on stock intercoolers and exhaust. Is that the best you can come up with?

 

[YellowLCR]

I was under the impression that once a car was mapped, even for power, the mpg goes up on long runs not down, not good.

 

[big eck]

My cars mapped mate and I can see 35+mpg on a long run, mid to high 20s having a play.

Must be how its mapped.

 

[drka-drka]

Crap maps, cheap petrol rule!!! Birmingham to Blairgowrie 354 miles. Giving it some soon as hit scotland on one tank

 

[jase750]

saying that the map is good just because it made a high top end figure is not the sign of a good map ask any tuner anyone can throw a bucket load of fuel at something to make power doesn't make it a good map
I've owned 8 Seats 4 leons 4 ibizas all of varying states of tune using different software and of them all I've found the Revo maps to be the inferior map.
I've had 2 revo maps and both haven't been as good as other maps that i had after
the first was on my first LCR made good power on the rollers but wasn't good to drive or on fuel, changed the map to a custom code one and even though it didn't make as higher figures it felt alot better on the road and was better on fuel.
the second was on my 100PD ibiza again good on the rollers loads of smoke and crap on fuel Forge map on it after better on fuel better to drive no where near as much smoke.
the map on this LCR is unknown to me ?/ but I have it on good authority that it's a strong map pulls well and gives reasonable fuel economy.
So unlike some on here that read forums and regurgitate what they have read I'm speaking from my own experiences with my own cars,

 

[YellowLCR]

The car made 285bhp on this map, on stock intercoolers and exhaust. Is that the best you can come up with?

Sounds like the maps concentrated on power, can't revo tweak the map so you can the best of both? 28 at best is going to be heavy on the wallet mate.

 

[8bit]

Sounds like the maps concentrated on power, can't revo tweak the map so you can the best of both? 28 at best is going to be heavy on the wallet mate.

I don't use the car for work, lucky if I do 4k a year so it's not a huge deal, just concerned that something isn't right.

saying that the map is good just because it made a high top end figure is not the sign of a good map ask any tuner anyone can throw a bucket load of fuel at something to make power doesn't make it a good map
I've owned 8 Seats 4 leons 4 ibizas all of varying states of tune using different software and of them all I've found the Revo maps to be the inferior map.
I've had 2 revo maps and both haven't been as good as other maps that i had after
the first was on my first LCR made good power on the rollers but wasn't good to drive or on fuel, changed the map to a custom code one and even though it didn't make as higher figures it felt alot better on the road and was better on fuel.
the second was on my 100PD ibiza again good on the rollers loads of smoke and crap on fuel Forge map on it after better on fuel better to drive no where near as much smoke.
the map on this LCR is unknown to me ?/ but I have it on good authority that it's a strong map pulls well and gives reasonable fuel economy.
So unlike some on here that read forums and regurgitate what they have read I'm speaking from my own experiences with my own cars,

I wasn't saying that the result is the be-all and end-all but it clearly can't be a total dead loss with a result like that. If anything it's more surprising that it made good power, either that or it really can't be overfuelling that much or it would be a lot lower surely. AFRs from the rollers looked about right to me too.

 

[jase750]

but the AFR's on rollers are at full load and full throttle it's the every day part throttle where it's let down,
there is always going to be a compromise between power and fuel.
mine made 240odd bhp on rollers but is quicker on the road than a supposed 270bhp revo'd lcr head to head up a constant gradient mine pulled a good two car lengths, and it wasn't driver skill cause it's a straight bit of road.
I'd rather have a big fat mid range than a high top end

 

[8bit]

but the AFR's on rollers are at full load and full throttle it's the every day part throttle where it's let down,
there is always going to be a compromise between power and fuel.
mine made 240odd bhp on rollers but is quicker on the road than a supposed 270bhp revo'd lcr head to head up a constant gradient mine pulled a good two car lengths, and it wasn't driver skill cause it's a straight bit of road.
I'd rather have a big fat mid range than a high top end

OK fair enough, I'm not getting into an argument about it, I accept you don't rate the Revo map but I'm not in a position to blow another 300 or 400 to change it now. There are plenty of Revo LCRs whose owners say they get slightly better (or at least no worse) mpg when driving normally.

 

[jase750]

no argument here bud, if all else is good and it's been serviced run on good fuel and no engine lights showing,
It can only be the map and as mentioned can it be tweeked a bit to be better on fuel and still keep most of the performance.
also don't forget that stage one is a generic map not all cars suit it some run fine with it others can't deal with it,

 

[big eck]

Most stage ones are generic, not all lol

 

[8bit]

no argument here bud, if all else is good and it's been serviced run on good fuel and no engine lights showing,
It can only be the map and as mentioned can it be tweeked a bit to be better on fuel and still keep most of the performance.
also don't forget that stage one is a generic map not all cars suit it some run fine with it others can't deal with it,

Maybe worth ringing the tuner then, see what they reckon I guess. The car is always run on 99Ron, almost always Vpower, occasionally Tesco99 stuff if I can't find a Shell. Never skimped on maintenance stuff either.

I've emailed Revo, see what they come back with. Might ring the tuner in the morning.

 

[alias]

It depends how it's mapped. If they just turned the wick up on the boost then the ECUs going to dump more fuel into the engine to match the increased air density (and therefore mass) reducing mpg. If they fiddled with the spark, then they could get gains by advancing it by a degree or two, resulting in no more fuel being used. If a map is heavy on one or the other its not good as it either puts too much onto the turbo, or with the case of advancing the spark could cause pre-ignition (worse case). As far as I can tell, a good map gets gains from both in moderation. Overboost is turbo killer, pre-ignition is an engine killer (and quick too!). If yours has been done to 285 on no other mods, it seems they just turned up the boost resulting in less mpg! Most people seem to go up to 250-270 on other maps from what I can see.

I might be wrong so don't take it as gospel, but that's my take on the situation.

 

[Spirit Furtive]

Nobody has mentioned that a revo map runs quite rich on fueling yet............

 

[8bit]

Nobody has mentioned that a revo map runs quite rich on fueling yet............

I did think that but the mapper says that's pretty normal. This is the rolling road graph:

Looked a touch rich to me but apparently that's to keep cylinder temps down. I guess as jase750 says the issue isn't WOT fuelling, it's cruising.

It depends how it's mapped. If they just turned the wick up on the boost then the ECUs going to dump more fuel into the engine to match the increased air density (and therefore mass) reducing mpg. If they fiddled with the spark, then they could get gains by advancing it by a degree or two, resulting in no more fuel being used. If a map is heavy on one or the other its not good as it either puts too much onto the turbo, or with the case of advancing the spark could cause pre-ignition (worse case). As far as I can tell, a good map gets gains from both in moderation. Overboost is turbo killer, pre-ignition is an engine killer (and quick too!). If yours has been done to 285 on no other mods, it seems they just turned up the boost resulting in less mpg! Most people seem to go up to 250-270 on other maps from what I can see.

I might be wrong so don't take it as gospel, but that's my take on the situation.

Well I thought the map was pretty much generic but I know they can tweak certain parameters a little bit, not sure if that's over and above what I could do with the SPS, but then the 1.8Ts don't support fuelling changes on the SPS apparently. I was originally on Boost = 6, Timing = 2 and Fuel = 8, I've upped timing to 4 which shows no CFs but I would have thought that would improve economy if anything.

I emailed Revo last night and they're saying something must be wrong with my hardware or I've got a vac leak, they say they have two BAM engine cars (an S3 and another LCR) which have no fuelling problems.

 

[Spirit Furtive]

Well I can tell you that my MPG dropped after the Revo map and the previous map I had on it was running very lean.

 

[big eck]

As usual mate it's not there fault its the cars lol.

 

[Joeb]

hmmmm

arnt your on the new linear map mate? or is that someone else. dunno

anyways, Ive switched to the linear map and its bloody fantastic. impressive figures and the throttle is so much more responsive. the torque is lovely.

but the mpg has gone down now. before i was around 26 ish (i only do A-B drives, no motorways or anything)
now im hardly hitting 24.5

ive just turned the fcuker off now. will switch it back on in the summer months. ha.