Fuel economy set up 'Synergy' box

Martin75 · 24th November 2007, 19:29

I have recently had a Ron Synergy STM2D with dash switch fitted for me last Friday (16th). I'm not too technically minded and eventually worked out I'd been driving around all week on setting 1 (red LED on) and the workshop had set the box to 1 too! I think this was the first ‘Ron’ example they’d seen?

After 300 miles as above, the rear valance was considerably blackened, as you can imagine and fuel consumption poor!

The box is now reset to 4, (green LED on). I put RED-Ex diesel treatment in the tank and have since covered 121 miles at about 60mph average on the M11. I notice upon auto kick-down now, a cloud of whitish smoke is emmitted and again the valance is dirty, but not so bad as before.

Ron thought that as the car had only covered 24k miles I could leave the MAF alone.

I bought the Synergy for economy and so far that factor has not I feel had a chance to be established as my normal 42mpg only returned when the box was turned off.

What setting do you find best, and how do I turn the MAF off as it may help I understand?

Any experiences and suggestions very welcome.

JohnDotCom · 24th November 2007, 21:09

I sugested to Martin that he switched off the mafam Section, as his car is very low mileage, but now got to check which box he actually has.

Ross R75 · 25th November 2007, 15:04

MAFAM section to OFF and set switch to 2 or 3. If you still get smoke, you need to clean your PCV filter, ensure your air filter is clean and ensure that your EGR assembly is gunk free or replace it with a bypass.

All of this done, you'll see an increase in both power and economy.

Martin75 · 25th November 2007, 21:16

Quote:

Originally Posted by Ross R75

MAFAM section to OFF and set switch to 2 or 3. If you still get smoke, you need to clean your PCV filter, ensure your air filter is clean and ensure that your EGR assembly is gunk free or replace it with a bypass.

All of this done, you'll see an increase in both power and economy.

Thanks Ross,

Ron thinks that due to the cars history, it spent 18 months being shunted around dealers and auction compounds the MAF may be shot. I'm going to turn off the MAF and try settings lower (as you describe) and await the new 'Piersburgh' MAF set up.

Martin

Ross R75 · 25th November 2007, 21:26

Not sure that the MAF will be shot. If you're getting a lot of smoke, the synergy is over-compensating for the MAF signal. Moving the MAFAM switch on the unit to the off position should increase performance and reduce smoke if this is the case.

With the MAF switch off, 2 and 3 are the same as 5 and 6 or 8 and 9. The higher numbers just have a higher level of MAF compensation.

I personally have the MAFAM switch at off and the unit on setting 9 although setting 3 would have exactly the same effect.

JohnDotCom · 25th November 2007, 21:41

Stop confusing the poor man.

Is there anyone near Martin that could assist him in changing the MAF etc please?

24th November 2007, 19:29	#1
Martin75 Loves to post Rover 75 CDti Auto Saloon 2004 Join Date: Nov 2006 Location: North Essex Coast Posts: 489 Thanks: 4 Thanked 5 Times in 1 Post	Fuel economy set up 'Synergy' box I have recently had a Ron Synergy STM2D with dash switch fitted for me last Friday (16th). I'm not too technically minded and eventually worked out I'd been driving around all week on setting 1 (red LED on) and the workshop had set the box to 1 too! I think this was the first ‘Ron’ example they’d seen? After 300 miles as above, the rear valance was considerably blackened, as you can imagine and fuel consumption poor! The box is now reset to 4, (green LED on). I put RED-Ex diesel treatment in the tank and have since covered 121 miles at about 60mph average on the M11. I notice upon auto kick-down now, a cloud of whitish smoke is emmitted and again the valance is dirty, but not so bad as before. Ron thought that as the car had only covered 24k miles I could leave the MAF alone. I bought the Synergy for economy and so far that factor has not I feel had a chance to be established as my normal 42mpg only returned when the box was turned off. What setting do you find best, and how do I turn the MAF off as it may help I understand? Any experiences and suggestions very welcome.

25th November 2007, 15:04	#3
Ross R75 Posted a thing or two Rover 75 Saloon Join Date: Apr 2007 Location: Edinburgh Posts: 1,535 Thanks: 137 Thanked 229 Times in 156 Posts	MAFAM section to OFF and set switch to 2 or 3. If you still get smoke, you need to clean your PCV filter, ensure your air filter is clean and ensure that your EGR assembly is gunk free or replace it with a bypass. All of this done, you'll see an increase in both power and economy. __________________ Copperleaf R75 CDT 160

25th November 2007, 21:26	#5
Ross R75 Posted a thing or two Rover 75 Saloon Join Date: Apr 2007 Location: Edinburgh Posts: 1,535 Thanks: 137 Thanked 229 Times in 156 Posts	Not sure that the MAF will be shot. If you're getting a lot of smoke, the synergy is over-compensating for the MAF signal. Moving the MAFAM switch on the unit to the off position should increase performance and reduce smoke if this is the case. With the MAF switch off, 2 and 3 are the same as 5 and 6 or 8 and 9. The higher numbers just have a higher level of MAF compensation. I personally have the MAFAM switch at off and the unit on setting 9 although setting 3 would have exactly the same effect. __________________ Copperleaf R75 CDT 160

24th November 2007, 21:09	#2
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	I sugested to Martin that he switched off the mafam Section, as his car is very low mileage, but now got to check which box he actually has.

25th November 2007, 21:41	#6
JohnDotCom * Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006 Location: Abergele Posts: 28,735 Thanks: 0 Thanked 6 Times in 5 Posts	Stop confusing the poor man. Is there anyone near Martin that could assist him in changing the MAF etc please?