Celtic Tuning eMotion2+ vs Superchips Bluefin: Self-Install Remap Guide for the Giulietta QV 1.75 TBi

ByKenji Alvarez

Self-install remaps for the Giulietta QV 1.75 TBi: what you’re actually getting

The Celtic Tuning eMotion2+ and Superchips Bluefin both do the same fundamental thing: let you write a modified ECU map to your car via the OBD port, then remove it yourself whenever you want. No workshop visit, no soldering, no stripping the ECU out. For most people that reversibility is the main appeal — partly for resale, partly for dealer visits, partly for insurance (more on that below).

Both qualify as a proper remap in the sense that they rewrite the ECU’s fuelling, ignition timing, and boost targets — not just bolt a piggyback box on top. The distinction matters. Tuning boxes sit between sensors and the ECU and trick it into behaving differently; they’re crude. An OBD remap actually edits the map tables. Same end result as paying a tuner to sit at a laptop, except the file is pre-written rather than custom-tailored on a rolling road.

What the 1.75 TBi actually gains

The Giulietta QV 1.75 TBi runs at 235 bhp in the 2010–2014 cars and 240 bhp in the facelifted versions from 2014 onwards. Celtic Tuning’s published Stage 1 figures put the earlier car at around 285 bhp — roughly 50 bhp up — with the later one reaching about 283 bhp. Torque on the post-2014 car goes from 340 Nm to 408 Nm at Stage 1. Those numbers come from Celtic’s own product pages, so treat them as a ceiling rather than a guarantee; real-world results vary with fuel quality, temperature, and individual engine condition.

Superchips’ Bluefin tends to publish more conservative gains on this engine. Neither company releases dyno sheets for every vehicle combination, so the honest answer is you won’t know your exact figure until it’s done.

How each system works in practice

With the eMotion2+, Celtic send you a handheld device. You plug it into the OBD port, it reads the current ECU map, and you send that file to Celtic. They write the modified version and push it back to your device. Plug in again, flash the new map, done. The read-flash cycle runs to roughly 15–20 minutes per session. Reverting works the same way — re-flash the original file and the car is back to standard.

Superchips’ Bluefin uses a dedicated handset on the same OBD principle. The write takes around 10 minutes. Once the device is paired to your car you can swap between stock and tuned maps as often as you like.

One practical difference worth knowing: a Bluefin, once assigned to a vehicle, stays assigned to that vehicle. The eMotion2+ device can be reused on a second car at a reduced map cost if you keep the hardware — handy if you’re planning to change cars in the near future.

Celtic vs Bluefin: which suits the Giulietta?

Celtic claims larger gains on paper for the 1.75 TBi. Superchips tends to be more conservative and has a long track record across mainstream UK cars. On Alfa-specific forums you’ll find owners with solid results from both — and a handful of older threads flagging Celtic’s mapping as aggressive on hard-driven turbocharged engines. It’s difficult to know whether those complaints relate to current eMotion2+ file quality or older software generations.

If dealer visits are a concern, both options let you revert quickly. Operationally they’re equivalent: both give you a switch between standard and tuned maps without leaving obvious traces in the ECU’s fault memory. Neither is fully forensically invisible, though. A deep read of certain ECU counters can show the map has been altered and restored, even if the current active map looks standard. Most dealers and insurers don’t carry out that check routinely, but it’s worth being clear-eyed about what reversible actually means.

Insurance: the part most people skip over

Because the map can be removed, there’s a temptation to treat it as invisible to your insurer while it’s on. It isn’t. In the UK, a remap is classed as a modification from the moment you apply it, and you’re required to declare modifications to your insurer. Fail to do so and then make a claim, and the insurer has grounds to void the policy entirely — not reduce the payout, but reject it altogether.

The premium impact for a Stage 1 petrol remap on a standard Giulietta QV is usually modest. Some insurers add nothing; others add a small percentage. Specialist performance car brokers handle these declarations more smoothly than comparison-site generalist policies. Tell your insurer before you flash the map, get the modification noted on the policy in writing, and keep the confirmation. It’s the dull version of this advice, but it’s the one that protects you when it counts.

Is remapping legal in the UK?

Yes. There’s no law against remapping a road car’s ECU for performance. The only remap-related activity that is illegal for road use involves defeating emissions equipment — DPF deletions, GPF bypasses, EGR removal. None of that is touched by a standard Stage 1 power tune on the 1.75 TBi petrol engine.

Sources


Similar Posts