Robertson's MAFAM regulation

asantosb · 28th November 2018, 19:46

Hello guys!
I bought a 75 3 months ago and I'd like to know how to best regulate my MAFAM that the previous owner had installed. Thank you!!

asantosb · 28th November 2018, 23:17

Hey guys! I meant Roverrons MAFAM, not Roberton's!looool

Arctic · 28th November 2018, 23:46

Quote:

Originally Posted by asantosb

Hello guys!
I bought a 75 3 months ago and I'd like to know how to best regulate my MAFAM that the previous owner had installed. Thank you!!

Quote:

Originally Posted by asantosb

Hey guys! I meant Roverrons MAFAM, not Roberton's!looool

Hi Antonio.
The best way to regulate it, is remove it from the car, and then have the car upgraded to a 160, there are a few T4 guru's whom will sort it out for you by post, best to ask though whom is willing to post abroad.

asantosb · 29th November 2018, 14:23

Quote:

Originally Posted by Arctic

Hi Antonio.
The best way to regulate it, is remove it from the car, and then have the car upgraded to a 160, there are a few T4 guru's whom will sort it out for you by post, best to ask though whom is willing to post abroad.

Thanks for the tip mate! But, since I'm in Portugal and I bought it a few times ago, I couldn't find any T4 expert here yet. Thus, I'm trying just to understand how to regulate the MaFAM, since Im trying not to have, in a near future, any more extra expenses... But why do you do that suggestion? 160bhp is more advisable according to most of users? Thanks!!

Mike Trident · 29th November 2018, 15:01

The reason that most people recommend the 160 remap is because it produces the extra power in a different way than the tuning box.

The box increases the fuel supply by making the fuel pump work at a higher pressure than standard. This could, I say could make the pump wear out quicker or possibly blow seals and start leaking.

The remap increases the fuel supply by altering the duration of the injector open times. So, no extra load on the expensive fuel pump.

Generally accepted to be kinder to the car.

marinabrian · 29th November 2018, 17:27

Quote:

Originally Posted by Mike Trident

The reason that most people recommend the 160 remap is because it produces the extra power in a different way than the tuning box.

The box increases the fuel supply by making the fuel pump work at a higher pressure than standard. This could, I say could make the pump wear out quicker or possibly blow seals and start leaking.

The remap increases the fuel supply by altering the duration of the injector open times. So, no extra load on the expensive fuel pump.

Generally accepted to be kinder to the car.

There appears to be a little confusion here, from what I read the OP has a MAFAM unit.

These were produced at a time where it was thought (erroneously) that boosting a "weak" Bosch MAF signal would overcome problems.

Now these are not tuning devices, but they are required when fitting a cheaper (incorrect) Pierburg MAF sensor in place of the original MAF.

My advice is simple, unless you have a Pierburg MAF fitted, removal of the MAFAM unit is the best course of action.

When a Bosch MAF fails, it fails with a higher than normal output, a fault condition that is exacerbated by amplifying the error.

Brian

asantosb · 29th November 2018, 17:51

Quote:

Originally Posted by marinabrian

There appears to be a little confusion here, from what I read the OP has a MAFAM unit.

These were produced at a time where it was thought (erroneously) that boosting a "weak" Bosch MAF signal would overcome problems.

Now these are not tuning devices, but they are required when fitting a cheaper (incorrect) Pierburg MAF sensor in place of the original MAF.

My advice is simple, unless you have a Pierburg MAF fitted, removal of the MAFAM unit is the best course of action.

When a Bosch MAF fails, it fails with a higher than normal output, a fault condition that is exacerbated by amplifying the error.

Brian

Thank you very much Brian!!

I do have a pierburgh MAF fitted along with the MAFAM. This is why I would like to know which would be the better way to have the Mafam's switch regulated. I don't know if it's better to adjust it to 100%/70% or whatever... I might upload some photos in order to make it easier having someone's advice on this!

Thank you in advance!!

Mike Trident · 29th November 2018, 18:04

Sorry, I thought you asked why the 160 was more desirable

asantosb · 29th November 2018, 18:10

Quote:

Originally Posted by Mike Trident

Sorry, I thought you asked why the 160 was more desirable

Yes I did since I'm a noob on this field, and I don't understand much of it

but the main question is how to regulate the Mafam's switch, since I have a pierburgh MAF fitted to my 75!
Thank you in advance!

CivilSteve · 29th November 2018, 21:14

Another option would be to have a MAFless tune done , don't have to worry about the MAF sensor then and can have some decent power

28th November 2018, 19:46	#1
asantosb Regular poster Rover 75 Saloon Join Date: Nov 2018 Location: Porto Posts: 44 Thanks: 30 Thanked 5 Times in 3 Posts	Robertson's MAFAM regulation Hello guys! I bought a 75 3 months ago and I'd like to know how to best regulate my MAFAM that the previous owner had installed. Thank you!! __________________ António Rover 75 Connoisseur 2.0 CDT Mk1 This vehicle was the 32,640th 75 to run off the production line, out of 112,381 This vehicle was the 2,338th 75 CDT Contemporary to be made out of 4,925 This vehicle was the 5,862nd 75 in Zircon Silver Metallic (code: MUM) to be made out of 9,171 Zircon Silver Metallic 75s

28th November 2018, 23:17	#2
asantosb Regular poster Rover 75 Saloon Join Date: Nov 2018 Location: Porto Posts: 44 Thanks: 30 Thanked 5 Times in 3 Posts	Roverron's Hey guys! I meant Roverrons MAFAM, not Roberton's!looool __________________ António Rover 75 Connoisseur 2.0 CDT Mk1* This vehicle was the 32,640th 75 to run off the production line, out of 112,381 This vehicle was the 2,338th 75 CDT Contemporary to be made out of 4,925 This vehicle was the 5,862nd 75 in Zircon Silver Metallic (code: MUM) to be made out of 9,171 Zircon Silver Metallic 75s

29th November 2018, 15:01	#5
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	The reason that most people recommend the 160 remap is because it produces the extra power in a different way than the tuning box. The box increases the fuel supply by making the fuel pump work at a higher pressure than standard. This could, I say could make the pump wear out quicker or possibly blow seals and start leaking. The remap increases the fuel supply by altering the duration of the injector open times. So, no extra load on the expensive fuel pump. Generally accepted to be kinder to the car. __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

29th November 2018, 18:04	#8
Mike Trident Posted a thing or two Rover 75 CDTi Saloon & Citroen C1 Join Date: Jun 2016 Location: Oakenshaw, Near Bradford Posts: 1,622 Thanks: 385 Thanked 552 Times in 328 Posts	Sorry, I thought you asked why the 160 was more desirable __________________ Rover 75 2.0 CDTi (131Ps) Conn SE Saloon. (Manual) 160 Remap, cruise control, electric window blind, temp gauge, Real walnut / ZT interior, FBH with GSM control. BORN Tuesday, 5th October 2004 @ 12:35:52 This vehicle was the 104,679th 75 to run off the production line, out of 112,381 This vehicle was the 3,318th 75 CDT Connoisseur SE (135) to be made out of 4,744 This vehicle was the 12,440th 75 in Starlight Silver (code: MBB) to be made out of 14,280 Starlight Silver 75s

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29th November 2018, 21:14	#10
CivilSteve Avid contributor MG ZT Join Date: Oct 2017 Location: Manchester Posts: 237 Thanks: 20 Thanked 108 Times in 56 Posts	Another option would be to have a MAFless tune done , don't have to worry about the MAF sensor then and can have some decent power