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It was mapped by fb tuning on the road before the ring trip this year |
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Fb tuning does carberry mapping withthe added features, I plan to use them for my current set up.
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The electrode light between the original NGK spark plug that is 0.6 to 0.7 mm must be respected when placing them but equivalence in Iridium? Since I have observed that the Iridiums already bring another light between 1.1 mm electrodes
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I replaced my plugs in June with PFR7B NGK but since then above 2500rpm to 6000rpm I seem to get a stuttering in power.... do you think this will be the plugs or likely to be something else that I may have dislodged in the process of changing the plugs??? Also are these the best plugs for the classic? Sent from my iPhone using Tapatalk |
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I am of the idea that the best spark plug is the original one recommended by the manufacturer as long as the engine is completely original. I put the NGK BKR7EIX which are a colder because of the modifications I have. In any case, it is not very clear to me if the 1.1 mm iridium GAP should be reduced when they are placed in a turbocharged engine since in the subaru turbocharged engine the GAP is 0.7 mm. |
PFR6B is the common replacement plug and using PFR7B is of no issue at all and something we have done on may cars for the past 20yrs or so...........
std boost gapping of around 0.7 / 0.75mm works fine and if more heavily modded we reduce to 0.65mm if the plugs were new and undamaged / gapped correctly then highly unlikely this is any issue |
Turbo cut
I cleaned my maf sensor today and put in a new pipercross foam filter and the power is now clean and no more lumpy power after 2500 rpm .... yaaaay it wasn’t the spark plugs !!
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Any update? I assume you've solved it now?
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Yeah I changed the turbo and it has been great ever since. The waste gate was loose and play in the shaft.
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Was it remapped to suite the new turbo ?
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