How do you tell if a car is mapped or not
Thread Starter
Advanced PassionFord User
Joined: Oct 2009
Posts: 1,730
Likes: 4
From: Blackpool
How do you tell if a car is mapped or not
Obviously there are insurance issues if you had an accident and never knew the car was mapped etc .....
But what if you where told it was mapped and there is no receipt to prove how would you know for sure?
My engine light is on and I was told this was because it was mapped I suspect this is bollox but I had it checked by a mate after replacing a few bits we cleared the light it's came back on but with no codes would a map cause this if so would it be worth getting it mapped again to get the light off?
But what if you where told it was mapped and there is no receipt to prove how would you know for sure?
My engine light is on and I was told this was because it was mapped I suspect this is bollox but I had it checked by a mate after replacing a few bits we cleared the light it's came back on but with no codes would a map cause this if so would it be worth getting it mapped again to get the light off?
Last edited by turbochild; Nov 5, 2013 at 10:17 PM.
PassionFord Post Whore!!
Joined: Mar 2006
Posts: 4,928
Likes: 129
From: Lincs.
Surely if the light is on there must be a fault code? Have you give it chance to log a code by ignition cycle on/run/off a few times?
Assume this is on the Octavia VRS?
To see if it's mapped,one test, is to do a vag-com/vcds MAF airflow test on the live data measuring blocks.
You can roughly work out the bhp from the airflow. (providing the MAF is good)
http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info
150hp should see 120 g/s , so that's 120 divided by 0.8 = 150
180hp should see 144 g/s
225hp should see 180 g/s
250hp should see 200 g/s
You get the idea.
Another check is to test the boost pressure, pretty sure most 1.8ts stock run around 0.6-0.8bar.
Further than that you need someone who knows what they're doing with remap files to pull the software off the car and go through it to see if it's stock or 'tuned'.
Assume this is on the Octavia VRS?
To see if it's mapped,one test, is to do a vag-com/vcds MAF airflow test on the live data measuring blocks.
You can roughly work out the bhp from the airflow. (providing the MAF is good)
http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info
Here's a good sanity check for the status of your MAF. Do a full-throttle run all the way to redline in a single gear (second works fine). Group 002 usually shows air mass in g/s (in many modern ECU's, consult your Factory Repair Manual for the specific group for your particular vehicle). Your peak airflow should be roughly 0.80 times your horsepower if you are close to sea level. So, if you have a stock 150 hp 1.8T, expect around 120 g/s. If you see significantly less than that, you MAF may be on the way out. Also note that airflow will be markedly different at higher altitudes due to reduced ambient air pressure, especially with naturally aspirated engines that do not have forced induction to overcome that deficiency. This still works if you are chipped, but "race" programs may make more power through timing, rather than airflow. Therefore, take all readings with a grain of salt.
180hp should see 144 g/s
225hp should see 180 g/s
250hp should see 200 g/s
You get the idea.
Another check is to test the boost pressure, pretty sure most 1.8ts stock run around 0.6-0.8bar.
Further than that you need someone who knows what they're doing with remap files to pull the software off the car and go through it to see if it's stock or 'tuned'.
Last edited by GVK.; Nov 5, 2013 at 10:42 PM.
Thread Starter
Advanced PassionFord User
Joined: Oct 2009
Posts: 1,730
Likes: 4
From: Blackpool
Surely if the light is on there must be a fault code? Have you give it chance to log a code by ignition cycle on/run/off a few times?
Assume this is on the Octavia VRS?
To see if it's mapped,one test, is to do a vag-com/vcds MAF airflow test on the live data measuring blocks.
You can roughly work out the bhp from the airflow. (providing the MAF is good)
http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info
150hp should see 120 g/s , so that's 120 divided by 0.8 = 150
180hp should see 144 g/s
225hp should see 180 g/s
250hp should see 200 g/s
You get the idea.
Another check is to test the boost pressure, pretty sure most 1.8ts stock run around 0.6-0.8bar.
Further than that you need someone who knows what they're doing with remap files to pull the software off the car and go through it to see if it's stock or 'tuned'.
Assume this is on the Octavia VRS?
To see if it's mapped,one test, is to do a vag-com/vcds MAF airflow test on the live data measuring blocks.
You can roughly work out the bhp from the airflow. (providing the MAF is good)
http://wiki.ross-tech.com/wiki/index.php/Fuel_Trim_Info
150hp should see 120 g/s , so that's 120 divided by 0.8 = 150
180hp should see 144 g/s
225hp should see 180 g/s
250hp should see 200 g/s
You get the idea.
Another check is to test the boost pressure, pretty sure most 1.8ts stock run around 0.6-0.8bar.
Further than that you need someone who knows what they're doing with remap files to pull the software off the car and go through it to see if it's stock or 'tuned'.
Thread Starter
Advanced PassionFord User
Joined: Oct 2009
Posts: 1,730
Likes: 4
From: Blackpool
Trending Topics
Advanced PassionFord User
Joined: Jul 2006
Posts: 1,516
Likes: 0
From: Killie
Sorry yeah it is the vrs have the oil light issue sorted was a sensor but done the pick up pipe and strainer as a precaution gave it a service reset the lights and they stayed off for a few miles then the engine light came on so got my mate to check it no codes I'll try again tomorrow he only has an obd reader thing off eBay if it shows nothing up I'll try get it looked at more in depth I'm lost with the whole figures part but I'm sure they will make sence to my mate! Cheers for your help
Get someone to scan it with VCDS
The only way to see if the file has been modified from standard is to read it and compare it to an original file.
Some changes in the file may cause various issues but not increase performance.You may even find some of the DTC structure has been deleted.
Some changes in the file may cause various issues but not increase performance.You may even find some of the DTC structure has been deleted.
Last edited by James @ M Developments.; Nov 6, 2013 at 10:58 AM.
Thread Starter
Advanced PassionFord User
Joined: Oct 2009
Posts: 1,730
Likes: 4
From: Blackpool
Wahay!! I've lost my Virginity!!
Joined: Dec 2009
Posts: 88
Likes: 1
From: worcestershire
yes thats normal so your coolant temp sensor and thermostat is ok.
get yourself one of these
http://www.ebay.co.uk/itm/2211215900...84.m1423.l2649
then download the free version from ross-tech
should throw up a fault code then
get yourself one of these
http://www.ebay.co.uk/itm/2211215900...84.m1423.l2649
then download the free version from ross-tech
should throw up a fault code then
Thread
Thread Starter
Forum
Replies
Last Post
big_Rad
General Car Related Discussion.
8
Sep 15, 2017 09:36 AM
kosienutter
General Car Related Discussion.
31
Aug 22, 2015 09:55 AM
track.focus'd
Restorations, Rebuilds & Projects.
26
Aug 12, 2015 05:53 PM
Red_bull
Ford Escort RS Turbo
0
Aug 9, 2015 08:34 AM