Mapping on Road vs Rollers - Which Better?
Great question
One im gonna keep an eye on.
Personally im worried about having my car driven (or me driving) at stupid speeds for a mapping, although i`ve heard its better to map on the road than on the rollers
Cliff
One im gonna keep an eye on. Personally im worried about having my car driven (or me driving) at stupid speeds for a mapping, although i`ve heard its better to map on the road than on the rollers

Cliff
Purely depends on what you're after. If like Cliff you want 38mpg driving to Marks and Spencer and back driving like Miss Daisy it's best to get it mapped on the shopping run but if you want outright POWER then you want it mapped on the rollers
Subaru Tuning Specialist
Joined: Jun 2002
Posts: 6,654
Likes: 1
From: 7.74 @179 mph 1/4 mile - road legal
There's a write up here on exactly that topic.
http://www.dentistmapped.com/roadtuning.htm
Not sure where he gets his info from
Andy
http://www.dentistmapped.com/roadtuning.htm
Not sure where he gets his info from

Andy
Scooby Regular
Joined: Jan 2006
Posts: 2,629
Likes: 3
From: Enginetuner Plymouth for 4wd RR Mapping Apexi Ecutek Alcatek Proper Garage More than just a laptop!
In answer to your question you need to do both to be assured of being accurate..Using the rolling road for the vast majority of it as it is far safer than hammering about on public roads for hours on end, but then carrying out final tests on the road to get accurate boost pressure readings etc..A really good rolling road set up and a tuner with years of experience are both essential to ensure the best results...Check out www.enginetuner.co.uk
The man knows his stuff...
If you are too far away from the southwest check out your most local dyno dynamics centre..
Quick question though you haven't mentioned what type of ECU you are looking to have mapped...Standard as this is possible on Version 5 onwards cars or Apexi, Autronics etc....
The man knows his stuff...
If you are too far away from the southwest check out your most local dyno dynamics centre..
Quick question though you haven't mentioned what type of ECU you are looking to have mapped...Standard as this is possible on Version 5 onwards cars or Apexi, Autronics etc....
Subaru Tuning Specialist
Joined: Jun 2002
Posts: 6,654
Likes: 1
From: 7.74 @179 mph 1/4 mile - road legal
Originally Posted by paulpalmer
Purely depends on what you're after. If like Cliff you want 38mpg to Marks and Spencer and back then driving like Miss Daisy is best to get it mapped on the shopping run but if you want outright POWER then you want it mapped on the rollers 

My cars never been near a set of rollers for a long time.
Trending Topics
Oh and to answer this the best way: You will never reach boost targets on the rollers. The only true way is real world driving. If you're worried about your license hire Bruntingthorpe or even Bovingdon for the hour/day. Bovingdon is £80 a day I believe
Looks like it's going to be done on the road after reading the above and that article.
What's going to be involved - is it a case of redlining it in every gear apart from 5th over and over?
What's going to be involved - is it a case of redlining it in every gear apart from 5th over and over?
Originally Posted by MartynJ
Quick question though you haven't mentioned what type of ECU you are looking to have mapped...Standard as this is possible on Version 5 onwards cars or Apexi, Autronics etc....
Surely a rolling road can put more load on the engine than a road maping ever could? and so a better map in any situation?
A driver and the mapper passenger on a road maping is a fixed load, what happens with 5 people in the car on a -5degree cold morning?
dipster
A driver and the mapper passenger on a road maping is a fixed load, what happens with 5 people in the car on a -5degree cold morning?
dipster
Last edited by davedipster; Jan 31, 2006 at 02:19 AM.
Originally Posted by BOB'5
RR if you're interested in bhp bragging.
Road mapped if your interested with how quick it is on the road.
Road mapped if your interested with how quick it is on the road.
Paul
Subaru Tuning Specialist
Joined: Jun 2002
Posts: 6,654
Likes: 1
From: 7.74 @179 mph 1/4 mile - road legal
Originally Posted by Zen Performance
Can you please explain why that is the case? Remember that I do 99% of my mapping on the road, but also run some of the cars I map on the road, onto the rollers.
Paul
Paul
and then you have to adjust it back again to stop boost spikes once it hits the road
Originally Posted by Andy.F
Only when the 'number' you get during road mapping isn't high enough to please the customer
and then you have to adjust it back again to stop boost spikes once it hits the road 
and then you have to adjust it back again to stop boost spikes once it hits the road 
martin
Thats strange...... as when mine was mapped on a RR it gave the same boost readings as it does on the road!?!

Anyway....
Ben v7,
The safest way is obviously on a RR, but people will argue that on the road you will get more realistic conditions etc. TBH I think the actual person doing the mapping is more important than the way it is mapped.
Regards,
Shaun.

Anyway....
Ben v7,
The safest way is obviously on a RR, but people will argue that on the road you will get more realistic conditions etc. TBH I think the actual person doing the mapping is more important than the way it is mapped.
Regards,
Shaun.
Originally Posted by webmaster
Thats strange...... as when mine was mapped on a RR it gave the same boost readings as it does on the road!?!

Anyway....
Ben v7,
The safest way is obviously on a RR, but people will argue that on the road you will get more realistic conditions etc. TBH I think the actual person doing the mapping is more important than the way it is mapped.
Regards,
Shaun.

Anyway....
Ben v7,
The safest way is obviously on a RR, but people will argue that on the road you will get more realistic conditions etc. TBH I think the actual person doing the mapping is more important than the way it is mapped.
Regards,
Shaun.
Paul
Former Sponsor
iTrader: (234)
Joined: Jan 2003
Posts: 14,406
Likes: 0
From: Over 500ft/lbs of torque @ just 1.1bar
Originally Posted by Zen Performance
Can you please explain why that is the case? Remember that I do 99% of my mapping on the road, but also run some of the cars I map on the road, onto the rollers.
Paul
Paul

Would you map mine on the rollers too, knowing that I dont give care for RR figures?
Originally Posted by BOB'5
Like a recent one that made very good figures on the RR where the customer was particularly interested in RR figures? 
Would you map mine on the rollers too, knowing that I dont give care for RR figures?

Would you map mine on the rollers too, knowing that I dont give care for RR figures?
Paul




