Z4 remapping. Your thoughts.??
- Thread starter Yorkie Z
- Start date
Re-mapping is fairly pointless for NA engines is what he means, all it will do is alter your power curve make it 'fee'l faster through the rev range I doubt any gains will be had, if anything you could loose some horses. Whereas with Forced Induction the results are dramatically different.
Also depends on the system used to test, some can be biased toward the map and give you unreliable results.
Also depends on the system used to test, some can be biased toward the map and give you unreliable results.
If I had a £1 for every time I've explained this message on here, I could retire 
Mapping on NA will likely restore some ponies you've lost over the years, but is unlikely to increase BHP significantly.
Unless you have an independently verified dyno, I would take any any dyno results with a pinch of salt. It's in the tuners best interest to show a "gain" otherwise you wouldn't pay. Eg if the dyno showed that the flat spots were gone, but little/no bhp increase, you're never going to hand over £250 are you? However, of it shows a 15bhp increase you'll be happy to empty your wallet.
I remember one forum member posted 2 dyno runs, with NO changes in between, but they showed a gain of 12bhp or something like that.
What boils my piss is the unachievable expectations that are usually set. "15% power increase" or some other bulls**t claims (excuse my language). Those kinds of gains are ok for turbo and turbo Diesel engines, but not 3.0i NA.
Worth doing if you want more midrange and a smoother journey, just don't expect fireworks.
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Mapping on NA will likely restore some ponies you've lost over the years, but is unlikely to increase BHP significantly.
Unless you have an independently verified dyno, I would take any any dyno results with a pinch of salt. It's in the tuners best interest to show a "gain" otherwise you wouldn't pay. Eg if the dyno showed that the flat spots were gone, but little/no bhp increase, you're never going to hand over £250 are you? However, of it shows a 15bhp increase you'll be happy to empty your wallet.
I remember one forum member posted 2 dyno runs, with NO changes in between, but they showed a gain of 12bhp or something like that.
What boils my piss is the unachievable expectations that are usually set. "15% power increase" or some other bulls**t claims (excuse my language). Those kinds of gains are ok for turbo and turbo Diesel engines, but not 3.0i NA.
Worth doing if you want more midrange and a smoother journey, just don't expect fireworks.
Sent from my iPhone using Tapatalk
Adamski said:If I had a £1 for every time I've explained this message on here, I could retire
Mapping on NA will likely restore some ponies you've lost over the years, but is unlikely to increase BHP significantly.
Unless you have an independently verified dyno, I would take any any dyno results with a pinch of salt. It's in the tuners best interest to show a "gain" otherwise you wouldn't pay. Eg if the dyno showed that the flat spots were gone, but little/no bhp increase, you're never going to hand over £250 are you? However, of it shows a 15bhp increase you'll be happy to empty your wallet.
I remember one forum member posted 2 dyno runs, with NO changes in between, but they showed a gain of 12bhp or something like that.
What boils my piss is the unachievable expectations that are usually set. "15% power increase" or some other bulls**t claims (excuse my language). Those kinds of gains are ok for turbo and turbo Diesel engines, but not 3.0i NA.
Worth doing if you want more midrange and a smoother journey, just don't expect fireworks.
Sent from my iPhone using Tapatalk
Perfectly put. 100% agree.
having previously mapped my N/A engine, I agree it's not all about overall gains, but more ironing out flat spots and making the best of what you have...
I found the car, Audi S4 - 4.2 V8, responded very well to some work and mapping...
it was worth the cost to me to have it done... hopefully better gains on the RS6 I have in at the moment though...
:thumb:
I found the car, Audi S4 - 4.2 V8, responded very well to some work and mapping...
it was worth the cost to me to have it done... hopefully better gains on the RS6 I have in at the moment though...
:thumb:
the cueball said:having previously mapped my N/A engine, I agree it's not all about overall gains, but more ironing out flat spots and making the best of what you have...
I found the car, Audi S4 - 4.2 V8, responded very well to some work and mapping...
it was worth the cost to me to have it done... hopefully better gains on the RS6 I have in at the moment though...
:thumb:
my only experience of remapping also came with some other works so its not really the same as taking a car and getting it done on its own but i would agree it wont add BHP (of much value) but will tune out flatspots and can make a car feel more responsive dependent on the map. For me i had a remap done a while after a tune and got the guys to sort out a few issues to do with fueling. it was worth it as they were able to ask me questions about how the car behaved and understood what i wanted in terms of power delivery. it certainly cured the hickup it had when burying the throttle in 2nd and 3rd.
so in answer to the OP's question. if you want to spend the cash with expectation of BHP gains. probably not worth it. if you want to make the car feel different and more to your taste. maybe worth it.
A
Anonymous
Guest
From experience I think £250 could be spent much more wisely on other performance or cosmetic mods. You could fit a brand new set of quality discs and pads for similar money, or a nice back box.
I had my 2.5 remapped and it has made minor differences. The engine is a little more responsive and mid range is slightly improved, but initially on the drive home I did think; wtf did I just spend >£200 on?!
I do have a nice receipt to go in with the paperwork when I sell the car which may make it more attractive for the next buyer (only other bonus I can think of!)
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I had my 2.5 remapped and it has made minor differences. The engine is a little more responsive and mid range is slightly improved, but initially on the drive home I did think; wtf did I just spend >£200 on?!
I do have a nice receipt to go in with the paperwork when I sell the car which may make it more attractive for the next buyer (only other bonus I can think of!)
Sent from my iPhone using Tapatalk - now Free
Liverpool
Hercule Poirot
Member
Whenever there is a post on mapping the general consensus is it is a waste of money which is true if you all you are doing is just the map and expecting incredable hp gains. What nobody ever seems to state is mapping is well worth it but only to make good of other mods that have been done ie exhaust and induction so that everything runs in harmony. This also has to be a live map by which I mean being tuned whist on a dyno, it is no good just having somebody plug a laptop in and start programming their own interpretation of how the car should run without actually observing it run. What you are really trying to achieve is optimum efficiency and this may result in a few extra ponies but will definetly result in better mid range and enhanced fuel economy.