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Changing Ring & Pinion After Mapping Session?
Posted: Thu Feb 23, 2017 4:40 pm
by HD_Goofnut
After a car has been mapped is it possible to change the ring & pinion for a different ratio without having to go through the mapping process again? I'm guessing not but would like some clarification before looking further into this.
Re: Changing Ring & Pinion After Mapping Session?
Posted: Thu Feb 23, 2017 7:56 pm
by stevieturbo
HD_Goofnut wrote:After a car has been mapped is it possible to change the ring & pinion for a different ratio without having to go through the mapping process again? I'm guessing not but would like some clarification before looking further into this.
Unless it is an extreme change, then very little work if any would need changed in the ecu.
The only one that may really need looked at would relate to road speed, but would depend where your road speed signal comes from.
Re: Changing Ring & Pinion After Mapping Session?
Posted: Thu Feb 23, 2017 8:06 pm
by HD_Goofnut
stevieturbo wrote:Unless it is an extreme change, then very little work if any would need changed in the ecu.
The only one that may really need looked at would relate to road speed, but would depend where your road speed signal comes from.
Looking to change from a 3.769:1 to a 3.266:1, not sure if that would be classed as extreme? How easy would this be to sort out?
Re: Changing Ring & Pinion After Mapping Session?
Posted: Thu Feb 23, 2017 8:26 pm
by stevieturbo
HD_Goofnut wrote:stevieturbo wrote:Unless it is an extreme change, then very little work if any would need changed in the ecu.
The only one that may really need looked at would relate to road speed, but would depend where your road speed signal comes from.
Looking to change from a 3.769:1 to a 3.266:1, not sure if that would be classed as extreme? How easy would this be to sort out?
I wouldnt expect it to make a huge difference
Re: Changing Ring & Pinion After Mapping Session?
Posted: Thu Feb 23, 2017 9:13 pm
by HD_Goofnut
stevieturbo wrote:I wouldnt expect it to make a huge difference
That good, thanks
Can anyone from Syvecs chime in just so I know I'm safe
Re: Changing Ring & Pinion After Mapping Session?
Posted: Thu Feb 23, 2017 9:26 pm
by stevieturbo
HD_Goofnut wrote:stevieturbo wrote:I wouldnt expect it to make a huge difference
That good, thanks
Can anyone from Syvecs chime in just so I know I'm safe
Without knowing anything about the car, the usage, how it has been mapped etc etc etc, it is impossible to say 100% it will not need any work.
Doesnt matter who you ask, although of course the person you really need to ask is whoever mapped it in the first place.
But there isnt huge reason for a diff swap alone and no other changes to require anything major.