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Fiesta 1.25 Tuning/performance

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#1 mwhite01



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Posted 14 August 2010 - 12:13 PM

I have just bought i Ford Fiesta 1.25 Zetec mk6.5, I have upgraded the air filter to a K&N panel which didnt do anything really, i am after some advice on getting just slight bits of extra power, im not after new cams or flywheels etc just easy mods like a chip.
Any body got any advice?

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#2 Mk7_Rbj


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Posted 14 August 2010 - 02:33 PM

My advice: dont waste your time really

The only things worht doing would be a proper induction kit to replace the restrictive air box, and, if you were really serious, an exhaust
A chip will do next to nothing to increase the power on a (82bhp??) 1.25 NA engine

If you're serious about going quick then focus on handling and keeping higher speeds through corners
Hope this helps


#3 studly


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Posted 14 August 2010 - 03:30 PM

Like has been said already just focus on handling as even an induction kit and decat exhaust etc will not increase the performance by much.

#4 Dave-2912


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Posted 14 August 2010 - 05:05 PM

Simple answer...
If you want more power, sell the 1.25 and buy a 1.4/1.6.

#5 Jack_P


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Posted 14 August 2010 - 06:59 PM

Just echoing what has already been said, dont waste your time tryint ot tune it as not alot can be done for the 1.25 engine, youll drop the value of your car and the insurance will go up. But if you really must, the ECU on the fiesta's are highly encrypted so getting into them is tricky unless you go to somewhere like pumaspeed or pumabuild.

Just go buy a 1.4. Easier and wiser :)

#6 Gazjs


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Posted 14 August 2010 - 09:34 PM

Same as above really. I just concentrate on making mine look good :lol:

#7 blade


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Posted 15 August 2010 - 10:48 AM

not much you could do really,i have a 1.25 in my mk7 fiesta,went to see what SKN tuning.de had to offer: +14 bhp and +15nM,not bad for a N/A engine,they also give full warranty for the performance gain (still believe that the increase isnt that much,probably around 8-10)
so that is the first thing that i will do after my warranty expires,than probably a full miltek exhaust etc.

hint: took the car on the dyno run: it puts out 86 bhp (if i remember correctly) instead of 82 bhp ; also it is a standard car,no engine tuning yet :D

#8 ChaingunDude



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Posted 19 July 2014 - 11:48 PM

In fairness, I was searching for the same info.  Just bought a 1.25 Fiesta myself and I did wonder if it could be worth tuning it up.  But so far (for a 1.25 engine) it already kicks out some great speed.  I think I'd just be eating petrol if I tuned it up.  


For a lightweight car the 75hp(ish) engine packs a fair punch.  If I wanted more I'd consider going for the ST but it depends on how many miles you plan on doing and how much you're willing to spend on fuel.


If you try tuning up and it works out okay let me know though, I'll be next  B)

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