All Things Mk5 > How to Guides / Troubleshooting

Down on power?

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GVK:
Invest in a VCDS cable from Gendan.ci.uk invaluable for these cars to check how they are running.

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GVK:
Me again, make sure the fuel filter has been changed, mine was changed last year and hd the original date stamped 2007 filter on it, it had mud inside.

pudding:
Was it really 28.5 degrees in the dyno cell?  That might have something to do with it.

GVK:
IATs in the 50s?

pudding:
Easily. The air temps in dyno cells are waaaaay hotter than an intercooler would see out on the roads.  The ECU starts pulling timing quite aggressively past 45 deg C intake temp and adds fuel for component protection, which might explain the black smoke.  It 'guesstimates' EGT temps from some kind of funky algorithms and dumps fuel in.  It doesn't have an actual EGT sensor like the old BAM TT engines had. 

Having said all that, 112@ the wheels is terrible.  I think there is some other underlying issue there.

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