![Iridium Spark Plug Set [Mk3 / Mk4 Focus ST] Engine mountune](http://www.mountune.com.au/cdn/shop/products/isp-aa_c1e7fda7-57d6-43aa-b720-9b60122e468c_2048x.png?v=1659376160)
2363-ISP-AA
EcoBoost engines running substantially higher boost pressure or increased levels of tuning compared to the OE power output can experience reduced spark plug life, resulting in lower engine performance, misfires and rough idle.
Increased wear is typically seen in the form of increased spark plug gap and degradation of the electrode. Using spark plugs that are optimised for increased power ensures maximum performance.
Extensive in-market validation at extreme boost / cylinder pressures was undertaken to ensure optimal performance was achieved, whilst also making sure reliability and drivability wasn't compromised in colder ambients.
Each set is supplied pre-gapped by mountune to optimise the setting and allow for easier end-user installation.
The NGK LTR71X-II is one step colder than the original spark plug.
Applications:
Features:
Please note: Supplied in a pack of 4 plugs.
United KingdomWhat to say, well they are spark plugs that come pre gapped haha. Purchased to try and eradicate a small cold start misfire, they have helped but not eradicated this misfire, should help when I map the car soon though.
United KingdomWow what can I say ordered them Wednesday and were at my door the following day , managed to get a cheeky discount too took me no more than 20 minutes to do car recently had a stage 1 map and with these plugs the car runs so much smoother than it did highly recommend
United Kingdom