1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
Filling up at the pump, but to be fair I wasn't far off at all on the run on Saturday.
But at least by the clocks you can get an idea if your better or worse.
Work it out!
http://www.calculate-mpg.co.uk/index.php?intro=known
The dash is calibrated for stock injectors.
1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
My dash says 62.1mpg right now lol.
854 T5 - The new project.
850 tdi - sorely missed.
daza-b (Saturday 18th October 2014)
On a trip i get about 700km to a full tank.
I'm sure you can tell the computer what injectors to are running, might reckons I'm getting 18, which seems about right going on the mileage I clock between fuel stops.
oblark (Tuesday 7th October 2014)
when I had my t5 I used to work it out on trips by filling tank to brim doing the mileage the filling it to brim again always was around 35mpg.
Also on the gauge when full dropping from 15gallon to 10gallon ide get between 150-200miles
There will be a correction map for larger injectors so the MPG is right. You can also play with it to get the factory crap right too
oblark (Tuesday 7th October 2014)
Here you go, I took this for you the other night, just to annoy you until your diesel box is fitted.
Give or take 2,350 / 2,400 rpm is 80.
I tend to ignore the dash read out and calculate it based on fuel used between full ups and mileage covered, the computer reads about 37 so around 2mpg out compared to my calculations but then it is running greens and not the standard injectors. As for the calculations I get to they're based on the mileage the car has covered according to the odometer so naturally there will be a margin of inaccuracy there but then I'm sure it's not a phenomenal difference from reality and gives me a rough idea what the car is doing mpg wise.
I have an M66 box from the 2.4 T5 and have just done a full tank nearly the light came on and said 60 miles to empty and at that point it had done 320 miles 180 of that was cruising at 80 on the motorway the rest has been round town and A road blasts.
For my M66 80 mph is just under 3000 rpm 70 is just over 2500 rpm.
I will only get another 30 miles at the most before I fill up even though the computer says 60 miles to empty, It lies like a man with a forked tongue lol
So that will be 23 Mpg for that tank of fuel, now that is a good week lol if it's town then its in the region of 260 miles between fill ups.
Owning a modified T5 is not cheap to run, so no one should ever think it is lol Even if you fit an M66D box!
Do what I am in the process of doing keep the 850 for when you want to go fast and to track days and get a Modern car petrol or Diesel!
According to sat nav with a tuned 300+bhp the most I have had out of it on the Autobahn 178mph
I Reckon I am Perilously close to 592 Bhp With all my non dangerous Mods
I`ve mite have found out why my mpg is so bad,
When setting up the AFR`s you have to remove the "lambda threshold" from the map,
Once to AFR`s are stable the "lambda threshold" is set to 4ms across the rev range.
At normal motorway driving the load is just above 4ms so the car goes from closed loop to open loop which can cause a high mpg.
So tonight I`ll be raising the "lambda threshold" to 4.5ms across the rev range and hopefully this improve my mpg
Last edited by oblark; Monday 13th October 2014 at 11:19. Reason: missed a "
1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
Another way to improve you mpg would be to fit a diesel engine.
daza-b (Saturday 18th October 2014)
1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
I have checked some data runs and have raised the lambda threshold to 4.5ms.
I also had a look at other parameters regarding the lambda and when you reduce the amount of Start Basic Injection Quantity to a more civilised value, you will be surprised, with the amount of fuel you can save.
If you reduce this Delay time to lambba regulation on time as well, you will be surprised of the reduction in fuel consumption you can make for short trips, without affecting the behaviour of your tuned car.
Last edited by oblark; Tuesday 14th October 2014 at 18:50.
1996 850 T5 AWD - Self tuned M4.4 ECU with COP`s, B5254T ( S60R internals in a 850 block ) ostrich 2.0 , VXR injectors @ 3.8 bar, K24 turbo with a 6+6 compressor wheel, 3.25" MAF, top mounted Dump Valve, RN Exhaust manifold, 3" downpipe with 200 cell cat, 2.75" Stainless exhaust, Brembo calipers, S60R brake discs, stainless RIP kit, 3" Throttle body,
Dangerous Dave (Friday 17th October 2014)
Can't remember, is the lambda threshold a single value or is it variable across the rev range?
1996 Olive Green 850 AWD - Follow the Project - Forged rods, 19T, big blue injectors, 960 TB, 3.25" MAF, Ostrich, 608 binary, arduino data display, active exhaust control with Focus RS tips, 320mm front brake conversion.
1996 Nautic Blue 850 AWD - Failed its MOT, now it's a donor for the green thing.
2004 Sapphire Black S60 D5 - The new daily hack.
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