Celtic Tuning

[Tea Pot One]

Anyone any experiences with them on a BMW ?

Looking at them for my X3 M40i ...

[aaron_2000]

Had a couple of cars with Celtic maps on them, experience of them was good and they seem to get a good write up.

[Kev_Mk3]

I had my 325d E91 mapped by them. What they quote wasn't what I got. BHP was down a fair bit but I got shed loads more Torque.

I'd not bother again as they are a generic map, I'd go somewhere specific to get a custom map done to the car

[Andy70]

Kev_Mk3 said:

I had my 325d E91 mapped by them. What they quote wasn't what I got. BHP was down a fair bit but I got shed loads more Torque.

I'd not bother again as they are a generic map, I'd go somewhere specific to get a custom map done to the car

From what I gather and info that I picked up on a custom map is the best option possibly? As I'm told repeatedly that all engines run differently and a generic map may not get the best out of an engine especially if there has been upgrades done. I'm curious as to how close or far off the mark I am so I will follow this thread as I was looking at custom tuning but know very little about it or where to go and comparative costs.

[Mr Whippy]

Anyone who does “every car” can’t specialise.

If the guy who comes to remap the car doesn’t even know what is modified, why, and what a car should be like before/after, it’s not great either.

Go to a specialist on this engine/engine family/brand.

[DoubleD]

Tea Pot One said:

Anyone any experiences with them on a BMW ?

Looking at them for my X3 M40i ...

Get on a BMW forum and ask there. They will be able to suggest the best BMW tuners.

[Andy70]

Mr Whippy said:

Anyone who does “every car” can’t specialise.

If the guy who comes to remap the car doesn’t even know what is modified, why, and what a car should be like before/after, it’s not great either.

Go to a specialist on this engine/engine family/brand.

I was always sceptical regarding re-mappers that do it on a lap top whizzing up and down the road and tell you they got 'about xxx bhp' and you know they are adding a bit, but at least with a rolling road remap you have a better idea, but I only recently found out that they probably use the same generic maps (correct me if I'm wrong?). Am I right in saying therefore that the best way is a custom tune to which you need a programmable ecu and the fuel is delivered by the technician to the exact amount of air that the car is sucking in?

[OldGermanHeaps]

you dont need a custom ecu in most cases a bespoke map can be tailored in winols and flashed onto the standard ecu, as long as you dont exceed it and its sensors capabilities.

[Andy70]

OldGermanHeaps said:

you dont need a custom ecu in most cases a bespoke map can be tailored in winols and flashed onto the standard ecu, as long as you dont exceed it and its sensors capabilities.

Sorry to hack op's thread but to me this is interesting, So if I want a 'tailored' map for my engine and upgrades, what do I do or where would I go?

[Jakg]

Mr Whippy said:

Anyone who does “every car” can’t specialise.

If the guy who comes to remap the car doesn’t even know what is modified, why, and what a car should be like before/after, it’s not great either.

I do agree, and I'd be very hesitant to use one of these places - however a proper custom remap, or even a generic map properly tailored to your car by a decent remapper on a dyno is significantly more expensive (and quite rightly so - it takes ages!) than an off the shelf option. It's not a straight comparison.

[smashy]

This is the guy that has always got great reviews seems to spend most of his time with BMWs

Simon https://www.e-maps.co.uk/

[OldGermanHeaps]

Andy70 said:

Sorry to hack op's thread but to me this is interesting, So if I want a 'tailored' map for my engine and upgrades, what do I do or where would I go?

chiptuners. org and ecuedit. com is where I learned how to get started.

[Mr Whippy]

To be fair generic maps that ‘tuners’ buy in but don’t understand ‘work’, but it’s like putting herpes in your car.

The map doesn’t need to be custom. Generic is fine.


But what you want is the tuner to have defined all their maps in their editing software, done all their testing, seen a hundred engines already, and just knows your setup inside and out and can spot issues.

They can start with a fresh binary, spot the maps ‘by eye’, and make fresh changes from memory because they’re so familiar with it.
And do it in a few hours.


I’ve not touched an EDC15C2 2.0HDi binary in about 8 years but I bet I could go through a file and mod it in 2hrs from nothing, all from memory.
I did about 150 cars.
I wasn’t the best at them either.

That’s the minimum you want from your tuner imo.


A tuner is already standing on the work of giants (ECU and hardware devs, then the OE), so for an end “tuner” to then lean on other tuners, until the bit they finally do is resolved down to marketing and plugging dongles in... well that’s not really turning any more.