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Discussion Starter · #1 ·

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Kindness71 said:
My son pointed me to this website where they offer a simple DIY plug in box which gives you 29-43 extra HP and 50-75 extra torque in the Ateca and better mpg depending on which one you get :shock:

https://www.racechip.com/shop/seat/ateca-from-2016/1-4-tsi-1395ccm-150hp-110kw-250nm.html

Anyone had experience of this sort of thing and if they actually work?
Never done this kind of thing personally, Kindness, as it hasn't been the kind of mod I would do to a car; I have always kept that to "styling" & bodywork mods only. I know a few who have done similar things, including to Leon model, so it should be fine. Just the old insurance & warranty implications, as always, to consider I suppose :D
 

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If they were that good then surely the vehicle manufacturers would fit them as 'standard'?
 

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Discussion Starter · #4 ·
Montala said:
If they were that good then surely the vehicle manufacturers would fit them as 'standard'?
That's exactly what I said. I guess over the long term it probably does cause excessive wear on the engine so reduces its life :? Just wondered if anyone had used similar and if it made any difference, more so for better mpg as still struggling after 600 miles to get above 38 mpg :cry:
 

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The 1.4 ACT 150 is notoriously difficult to remap. Search "1.4 Tsi act 150 remap" on Google and there's quite a bit about it. The old 140 was much simpler by all accounts.

As for "plug in" boxes, all they do is trick the ecu in terms of various parameters.
 

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I've done both race car preparation and "fast road" car tuning in years gone by. That has taught me to leave modern cars alone.

As has been said, most "plug-in" devices are usually simple and simply override a few of the engine sensors, such as the MAF or boost gauge. They're crude but can be effective in increasing engine power to a certain degree - usually at the cost of fuel (despite their claims to improve consumption). Then you can get a replacement ECU with a modified engine map - generally much better than the plug-in boxes. What you really need if you go down this route is a custom engine map finished by a specialist on a rolling road who will check that the map doesn't cause detonation etc. One thing you commonly hear is that the manufacturer's map is (to a degree) conservative and designed to run on a variety of octane fuels (including lower quality fuel than in the UK) so you can "optimise" the ECU for a more optimal environment.

However, a replacement ECU:
- often doesn't support the full range of functions that the manufacturer built in to the original ECU
- can void your warranty if it was implicated in a mechanical failure
- can void your insurance unless you tell them (and pay more)
- really only gives significant benefits at WOT
- can require you to use more expensive (Super) fuel
- can make higher end output at the expense of lower end flexibility (i.e. lumpy at low rpm)
- can impose stress on other components (clutches, gearboxes, drive shafts etc.)
and various other compromises.

I'd expect the 1.4 TSI to be able to give about 10%-15% more if asked (the turbo is probably optimally sized for the current application so will go out of its efficiency band at much more than this), however, modern ECUs are pretty complex so would a new chip support stop/start, Eco mode etc? I had a new ECU once that didn't even support retardation and over fuelling on a cold start, that was a fun engine to get going...

I would never consider modifying the engine on a car while it's in warranty. And even after...ask yourself why you are doing it. Is the car genuinely underpowered for your needs? Do you find yourself constantly going for 4500rpm upshifts, trying to find the power band?
 

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Comprehensive response, Excalibrates :D

Probably sets out, but in a much more technical way than I could, the types of concerns that have always kept me away from engine mods; I only play about with the styling of cars - exhaust back box changes have been nearest thing to tuning I've done. :D
 

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Discussion Starter · #8 ·
mcderms said:
Comprehensive response, Excalibrates :D

Probably sets out, but in a much more technical way than I could, the types of concerns that have always kept me away from engine mods; I only play about with the styling of cars - exhaust back box changes have been nearest thing to tuning I've done. :D
Not really intending on fitting one of these, just thought it would be nice to talk about a different subject for once ;) :lol: :lol: :lol:
 

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I've had a few modded cars in the past (ST, Type R's, Impreza's) all petrol ones and remapping can really help - but only when mapped to the individual cars mods - the lads with the diesels got huge power gains from having their cars remapped - PROPERLY. As mentioned above these plug and play generic boxes trick the ECU and can actually damage the internals. Having a custom remap built for the car (usually done to modded cars already) helps by saying to the ECU "hey i have bigger injectors now so i can push harder". Just my tupence worth :)
 

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Howie669 said:
I've had a few modded cars in the past (ST, Type R's, Impreza's) all petrol ones and remapping can really help - but only when mapped to the individual cars mods - the lads with the diesels got huge power gains from having their cars remapped - PROPERLY. As mentioned above these plug and play generic boxes trick the ECU and can actually damage the internals. Having a custom remap built for the car (usually done to modded cars already) helps by saying to the ECU "hey i have bigger injectors now so i can push harder". Just my tupence worth :)
Yup - those were the kind of "fast road" mods I referred to earlier - you can get big gains but you generally need to add (some of) new turbos, stronger crank, ported valves, bigger injectors, new clutch, new exhaust as well as the new ECU and THEN get it mapped. All a very far cry from just plugging in an extra "tuning box"!

TBH modern car engines are designed and engineered much closer to their intended usage - gone are the days when you could double the horsepower on a Jap engine because it came with a cast block and forged pistons and crank!

This reminds me of how small the 1.4 engine looks in the bay of the Ateca, I'd imagine the 1.0 engine looks quite lost in there...
 

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I thought that about the 1.4 in the engine bay, it looks tiny. Plenty of room for the 2.0 turbo in the Cupra :cool:
 

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Two mates have remapped their cars, both diesels, and the difference has been very noticeable..
One had a bmw 330d chipped and it went like the proverbial 'off a shovel. '
Other had a zafira remapped with a laptop and gained something like 40bhp..
 

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Always wanted to mod up a Multipla, just for the fun of it going like stink and looking like a bus :lol:
 
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