Rubbish MPG after Revo stage 1

[8bit]

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.

Yeah I'm on the linear one. Your MPG figures sound much like mine, just been out for a thrash and averaged about 22.5. Going to wait until a bit later and go on a steady 70 cruise for about 30 or 40 miles and see what I get over that.

I guess if everyone that has Revo stage 1 is getting poor mileage then fair enough, that's just a consequence of how they do their maps. In that case I'll accept that there's nothing actually wrong as such, that's just how it works. Only thing is that Carl at Revo told me that they have two BAM engine cars both of which average 32 - 34 on motorways, which is about what I used to get.

Was watching AFRs while driving fairly gently last night, mostly on dual-carriageways, generally sitting at 14.7 on steady throttle, so doesn't look like it's running seriously rich on normal driving. Maybe I do have a vac or boost leak somewhere, not getting any fault codes to say so but maybe I have something leaking after the MAP sensor, I guess anything after that won't be detected by the ECU?

 

[J@mes W]

I've got the linear Revo stg 1 on my LCR and I get 25mpg around town and between 30-35mpg on a run. This is what I got on previous car with an AmD map, i'd say they are pretty comparable on mpg.

 

[Joeb]

hmmm.

ill do the same - keep and eye on AFR's on steady throttle and report back.

let me know what you get when you go on your motorway run.....


lets see if what revo says is true.
i need to do a motorway run myself!


what revo settings are you using at the moment?

 

[Joeb]

have you checked you thermostat and coolant temp sensor?

if these are faulty it will cause bad mpg's


i replaced both a few months ago. made a small difference.
get them checked.

 

[COBBERS]

Revo software can be flashed onto a car in 2mins, however to get the best out of it you need to take it to a revo dealer with a dyno to tweek it perfectly (they should be able to sort the 'drinking' problem out).
The fact the software can be flashed onto an ecu is probably the reason people think revo is not as good as other re-maps. In my opinion if you install it properly (on a dyno) it can't be any worse than any other map...so no need to fork out on a different map.

 

[m0rk]

8bit

I'm guessing you have VCDS, hence the fuel trim comment & confirmation that CTS is working

It's worth a quick logging session to verify the MAF, and the Lambda (B1S1) is picking up the right readings.

Most of the comments in this thread are bollocks though, clearly from the brainwashed, or mindless.

Other things to check... tyre pressures, spark plugs (for wear) and the air filter - just your usual service stuff really

 

[8bit]

8bit

I'm guessing you have VCDS, hence the fuel trim comment & confirmation that CTS is working

It's worth a quick logging session to verify the MAF, and the Lambda (B1S1) is picking up the right readings.

Most of the comments in this thread are bollocks though, clearly from the brainwashed, or mindless.

Other things to check... tyre pressures, spark plugs (for wear) and the air filter - just your usual service stuff really

Hi m0rk,

I haven't got VCDS, I used the Torque app for Android, this confirmed coolant at or within a few degrees of 90. Thermostat and CTS both less than a year old. MAF readings looked fine too, up to about 210 but I wasn't totally redlining it as I was on public roads. AFRs looked fine also. Spark plugs are nearly brand new, maybe 300 miles on them.

Turns out it may have been a PCV leak. Noticed today that the hockey puck valve thing was very loosely inserted into the hose that goes to its' side. Remembered that sometime last year I spotted that the clip had disappeared so stuck it in with a cable tie and meant to get a new jubilee but totally forgot. Sorted that today then went for a fairly gentle A-road cruise at about 65 - 70 for about 20 miles and got 31mpg and was still climbing.

Not sure if that fixed it, the other thing I did was fill up with a fresh tank of Vpower. I don't use the car through the week as I walk to work just now so I tend only to fill up maybe once every 4 or 5 weeks, not sure if that's long enough for the petrol to break down in the tank?

Joeb, settings are currently Boost = 6, Timing = 4, Fuel = 8.

 

[m0rk]

Good fault finding - well done

Crap map comments - LOL - Maybe Revo made his PCV leak too

 

[8bit]

Good fault finding - well done

Crap map comments - LOL - Maybe Revo made his PCV leak too

Cheers, I'll know for sure if it was the hockey puck once the current tank of fuel gets low, in about a month or so Don't get how a PCV leak could affect MPG though, the PCV system is separate from the combustion chambers isn't it?

 

[GoogleBear]

Believe ours to be revo map, although it was mapped by the previous owner long before i had it. power comes in very quickly mostly mid range very aggressive but nothing much top end. mpg is good with it 30-33 round town 36 - 38 motorway. if that helps in any way

 

[8bit]

30 - 33 in town? Is yours LPG converted or something?

 

[GoogleBear]

Ha no, now I have to admit to my fairy like driving. Don't do too much city driving round our way if it was proper city probably lot less to be fair, driving normally today urban got around 30 with a full car and a few blasts

ditto with the thermostat though much improved mpg

Would you describe your power delivery any differently to mine?

 

[andycupra]

also more power = more fuel.
so if you get a remap and then use the happy pedal alot then you will be worse mpg.
However if you drive sensibly, then this is when you might get an improvement in mpg.

 

[8bit]

Ha no, now I have to admit to my fairy like driving. Don't do too much city driving round our way if it was proper city probably lot less to be fair, driving normally today urban got around 30 with a full car and a few blasts

ditto with the thermostat though much improved mpg

Would you describe your power delivery any differently to mine?

Hmm more or less but mine pulls hard all the way to redline, still plenty of acceleration at high RPM. You'd really need to baby it to hit 30mpg in town, best I've seen after most of a day driving about town is about 27.5 I think.

also more power = more fuel.
so if you get a remap and then use the happy pedal alot then you will be worse mpg.
However if you drive sensibly, then this is when you might get an improvement in mpg.

Yeah that bit I can understand totally, it's when I was cruising about and getting lousy mpg that was bugging me.

 

[GoogleBear]

Quite interesting, I heard somewhere revo had changed its maps because It was too aggressive early on, if there's any truth in that just wondering if we got one of the early maps. Not that I'm complaining gets up the hills round here great.

 

[andycupra]

if someone had a revo map and wanted the later / linear map how can they go about this?

 

[8bit]

if someone had a revo map and wanted the later / linear map how can they go about this?

Contact your local Revo dealer, the cost to change over is £50, not sure if that includes VAT or not.

 

[J@mes W]

8bit... I agree with you regarding the power delivery, mine makes peak power just shy of 6K.

 

[seatcupramad23]

most stage one maps normally run slightly rich on WOT to cools things as the stock hardware ie manifold downpipe and restrictive with makes things run hot, so combat high egt temps running it slightly rich top end helps cools things but looking at your AFR graph yours isn't running rich yes its hits 11.5:1 briely but mainly in the mid 12s on WOT which is about optimum for most power.

you want to check your pre cat lambdas is functioning properly first then check the usuals like splits pipes i don't think anythuing is wrong with your map i loved my revo map on my old lc. if your getting 28mpg out of a LCR thats still good

 

[jase750]

Good fault finding - well done

Crap map comments - LOL - Maybe Revo made his PCV leak too

taking the assumption (the mother of all f**k ups) that nothing else had changed the only thing it could have been was the map.
and as I said stage one Generic suits some cars better than others. In my case the two revo maps I had were terrible compared to subsiquent ones.
personally I think there are overpriced and for brand snobs, and there are plenty of other tuners that have caught up and passed them by now.