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So just finished the Symposer Delete on the Fiesta ST180 and now notice that there is a whirling or better described as a Vacuum Noise from blowing across the top of an empty bottle.
I think it sounds more like a Cylon from that cult classic, BattleStar Galactica.
Fiesta ST180 after Symposer Delete was Added:
Luckily, vacuum type sound stops after around 15 seconds from cold start and does sound a little like the Diverter Valve or similar.
Will have to investigate vacuum leaks etc, so fun weekend for my Son and I to look forward to.
Couple of pictures of the original Symposer alongside the new Symposer Delete we got from Matt Lewis Motorsport, a relatively easy job that took around 15 minutes or so.
In a completely sane world, madness is the only freedom (J.G.Ballard).
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After further investigation, actually found the vacuum suction type air noise was caused by the Bosch stock air filter we had put in. Once we re-added the ST180 PiperCross sports air filter, the vacuum sucking type noise was no more.
Note, I also did clean the MAF (mass airflow sensor) at the same time, but either way, no more sucking vacuum type noise .
Thoughts, only reason maybe as to why the Bosch stock (ST180) air filter did not work is because the Fiesta ST180 is fitted with a Milltek CAT back exhaust and this is pulling more air (intake) as a result or the Bosch stock 180 air filter is faulty.
Or the FiST is already remapped stage 1 tuned (software) and we do not realise
In a completely sane world, madness is the only freedom (J.G.Ballard).
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