415bhp Post Remap - V8V

[jonamv8]

Follow up from my original dyno run which recorded a peak engine output as 397bhp, you can see before and after for power/torque below:



Been for a blast today - Car feels MUCH smoother and pulls noticeably better - happy.

[matg]

Nice.

Usual questions, how much, where from?

Mat

[GJOB]

matg said:

Nice.

Usual questions, how much, where from?

Mat

+1

[jonamv8]

Viezu, in Bromsgrove, although they have locations nationwide. Project was a bit of R&D so I'm unsure what final pricing will work out at. Like having a new car!

[michael gould]

I dont get remaps.........is Aston Martin such a crap company that they dont set up their cars with perfect balance of performance/fuel econmy/engine safty/ect/ect.that we have to leave it to some "performance" company with a rolling road and a PC and an advert in "blow your engine up" magazine to teach Aston Martin how to set up their cars for optimimum use.........I dont think so.......rant over

[jonamv8]

If you'd driven mine before and after then perhaps you'd alter your opinion. Put it this way, I'd hate to have to put the standard map back on...

[bogie]

did they remap the factory ECU or fit an "interceptor chip" or similar?

[jonamv8]

Bogie - Was on the factory ECU

[toohuge]

michael gould said:

I dont get remaps.........is Aston Martin such a crap company that they dont set up their cars with perfect balance of performance/fuel econmy/engine safty/ect/ect.that we have to leave it to some "performance" company with a rolling road and a PC and an advert in "blow your engine up" magazine to teach Aston Martin how to set up their cars for optimimum use.........I dont think so.......rant over

Well as you mention the term is "balance" thus a compromise on many things. Car manufactures also work in a large window of safety, therefore shifting that balance and edging into the safety window is not too much to concern yourself with and small power gains can be had. After all, the OP's re-map released another 10%, no offence to the OP but that could be down to dyno error if you are cynical. A very common re-map is to add a little ignition advance as most engines are set to 87 octane due to the american market, altering the map for 97 octane levels will result in this sort of power increase.

Chris

[jonamv8]

Exactly as it's been described to me in the past Chris

[michael gould]

toohuge said:

Well as you mention the term is "balance" thus a compromise on many things. Car manufactures also work in a large window of safety, therefore shifting that balance and edging into the safety window is not too much to concern yourself with and small power gains can be had. After all, the OP's re-map released another 10%, no offence to the OP but that could be down to dyno error if you are cynical. A very common re-map is to add a little ignition advance as most engines are set to 87 octane due to the american market, altering the map for 97 octane levels will result in this sort of power increase.

Chris

Please somebody tell me that Aston do not set up their European cars to run on 87 octane........if remapping can make such a wonderful enhancment to our cars, why dont dealers offer this service ?

[jonamv8]

The revised engine management system also enables the engine to take full advantage of the latest high octane fuels, providing a crisper throttle response and stronger performance feel.

http://www.astonmartin.com/eng/worksservice/option...

AM does off this

[Neil1300R]

michael gould said:

toohuge said:

Well as you mention the term is "balance" thus a compromise on many things. Car manufactures also work in a large window of safety, therefore shifting that balance and edging into the safety window is not too much to concern yourself with and small power gains can be had. After all, the OP's re-map released another 10%, no offence to the OP but that could be down to dyno error if you are cynical. A very common re-map is to add a little ignition advance as most engines are set to 87 octane due to the american market, altering the map for 97 octane levels will result in this sort of power increase.

Chris

Please somebody tell me that Aston do not set up their European cars to run on 87 octane........if remapping can make such a wonderful enhancement to our cars, why dont dealers offer this service ?

Well when I bought my Aston, the dealer told me that there is only one spec of Aston worldwide - they don't have the resources to develop different engines for different markets He said the engine did not need Super Unleaded as it was designed to run on US fuel (still put Shell Optimax in mine, but that another thread).

Have had my Geo altered to make the handling less 'soft' as again designed for all markets and setup to be safe - now can get on power earlier and it feels more surefooted in high speed bends - so it makes me go faster (its not my fault officer the can made me do it ).

So, as Astons are setup to be 'safe' on all fuels / handling as they leave the factory I can believe that in theory re-mapping to run only on high octane will deliver more performance, without endangering the engine.

However, IIRC SLINC has tried this and not got anywhere with the re-map. Also, not sure what would happen to the warranty / extended warranty if there was ever a problem after a re-map.
Would be interested to know more on this re-map, does it require high octane fuel etc.

[Luckyluciano]

Prodrive do offer a re-map with sports cats. This is to specifically run on V Power.

http://www.prodrive.com/products_level2.html?id=76...

From what I've read SLINC did get some good results from the first re-map he had done but then took
the car to TDI to see if they could improve on that but they couldn't?

[toohuge]

Neil1300R said:

Well when I bought my Aston, the dealer told me that there is only one spec of Aston worldwide - they don't have the resources to develop different engines for different markets He said the engine did not need Super Unleaded as it was designed to run on US fuel (still put Shell Optimax in mine, but that another thread).

Have had my Geo altered to make the handling less 'soft' as again designed for all markets and setup to be safe - now can get on power earlier and it feels more surefooted in high speed bends - so it makes me go faster (its not my fault officer the can made me do it ).

So, as Astons are setup to be 'safe' on all fuels / handling as they leave the factory I can believe that in theory re-mapping to run only on high octane will deliver more performance, without endangering the engine.

However, IIRC SLINC has tried this and not got anywhere with the re-map. Also, not sure what would happen to the warranty / extended warranty if there was ever a problem after a re-map.
Would be interested to know more on this re-map, does it require high octane fuel etc.

Yes that all sounds about right. Creating an engine map is a very time consuming and expensive task. The 're-maps' that are usually offered only alter one or two things really.

The important thing here is to review the percentage power gained, not overall power gained. An increase of 38bhp is approximately 10% not a huge amount in terms of engine tuning. This can be acheived through all sorts channels or tweaking and to some extent dyno calibration settings.

When designing a super charged v8, running close to 1200bhp we took a variation of about 100bhp to be fair enough, 38bhp at those levels was nothing and can be down to air temperature etc.

Sometimes car manufacturer maps are a little lazy, hence why at low speeds (not entirely sure on Astons) they can chug alone if your not careful on the throttle. This is a simple mapping issue and can be written out with a good engine tuner.

Whenever a car manufacture releases a car, they must be careful with fuel octane ratings as fuel octane levels can alter from supplier to supplier. What Aston doesn't want is massive warrenty claims from engines that have grenaded themselves due to detonation.

Chris

[bogie]

Aston do offer a remap, as part of the power pack upgrade on the 4.3, but they also include revised airboxes/filters that help also to make the 20bhp gain

again, a more conservative, different way of bumping the power up a bit, that can be warrantied and wont go bang if you put 95RON in

[michael gould]

I asume remaps invalidate the warranty ?

[toohuge]

michael gould said:

I asume remaps invalidate the warranty ?

Unless they are Aston Martin recognised (I think that the prodrive one is/was) then technically yes. Although it is very difficult to determine whether the car has had a re-map and whether that re-map was the cause of the fault.

Chris

[Grant3]

Personally I wouldn't consider an after market re-map on something like an Aston, it ruins its originality and hence undermines the value, even if done well the next buyer will assume it has been Maxpowered! I'm also sceptical about the power gains shown on rolling roads, when ever I have had this done, all sorts of adjustments have to be done for changing atmospheric conditions etc and my car always ended up more powerful than the expected standard output!

Astons Powerkit may cost more but it keeps the car Aston warranted and adds some value come re-sale (rather than actually reducing the cars value!)and as has been said Aston add an all new induction system in addition to the ECU re-map in order to gain an extra 20 BHP.

Prodrive warrant their upgrade and they run some of the Aston racing teams, so know their potential inside out! They add 45bhp, but only with racing cats and a raised rev limit in addition to the re-map, this mod doesn't have to meet ECU legislation like the Aston one does, hence the 100/200 cell cats! It also comes with a switchable exhaust which will wake the dead when open!

[michael gould]

I wouldn't touch any Aston thats had either a remap or if an after market exhaust fitted, to me it just says the cars been thrashed.......thrashed.....thrashed......