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Discussion Starter #1
Hey guys. Since I've owned my 2007 rrs supercharged, I've always felt like it had slightly less power in higher revs than another one I test drove before buying this one. I now have an iid tool and can see that it has no fault codes. I've tried cleaning the maf sensor with the proper cleaning spray but it was hard to tell if there was any difference. I've also cleaned the throttle body as best as I could. So now I was wondering if anyone was able to let me know approximately what readings they get from the maf sensor at idle and the Max reading they get at full throttle and high revs. I sometimes get a slightly rough idle also so I'd like to be able to rule out the maf sensor before checking other stuff. Also my car has 204000km so it could be anything causing it. Either that, or I'm just imagining these problems. TIA
 

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Discussion Starter #2
Surely there must be someone with the same engine that's able to check their maf readings? I'm pretty sure mine is reading a bit low under full throttle at high rpm.
 

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Discussion Starter #4
Is there really any point in owning a supercharged v8 if you're not going to put your foot down occasionally? Or do you think I'm talking about doing that in neutral? I'm talking about having my phone in it's mount on the windscreen so I can view the maf readings and driving at full throttle.
 

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Simple enough to buy a new MAF and see if that makes any difference. Presumably you have also checked that your air filter is new and/or clean and no blockages on the intake. Clean the throttle body with a toothbrush and cleaner, and also run a fuel injector cleaner. Try also putting an appropriate dosage of Marvel mystery oil in the fuel tank. If none of that smoothed itmout, I’d also suggest pulling the spark plugs and examining them.
 
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