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Rb25det

smidy

By smidy,
in Engines & Forced Induction

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smidy Community Regular

smidy

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hi all

purchased my r33 gtst around 6mths ago, coupla mths later fitted 3" mandrel bent exhaust wit hiflow cat and cannon. ever since engine has been running very rich in fuel consumption :huh: and performance in pick up is "choking" so to speak whilst under heavier accelaration :) . i have spoken to a few people about this, and done the following, i have put standard BOV back on. replaced oxygen sensor in exhaust as this was not working to start!!! and had a fairly good check on vaccuum lines for air leaks etc. please help as fuel is not getting any cheaper :( ???????????????

smidy

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smidy Community Regular

smidy

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when you say choking do you mean miss fire? Check your coil packs

thought maybe that but when i purchased the vehicle there was a coil pack gone and had to take it back to get that done.

know what that feels like under acceleration and this just doesn't seem quiet as bad as the "miss" or "choke" that provided???

thanks for reply anything else?

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smidy Community Regular

smidy

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Super Air Flow Controller, can lean up your engine a bit to stop it running rich. Your standard ECU might not like the extra boost and go into Rich And Retard mode.

i'm not running any extra boost don't have any boost control parts just all standard been reading other threads about similar issues and some have said plugs. put new twin spark plugs in when originally purchased at time or coilpack replacement.

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smidy Community Regular

smidy

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Super Air Flow Controller, can lean up your engine a bit to stop it running rich. Your standard ECU might not like the extra boost and go into Rich And Retard mode.

i have also been told there might be a slight air leak in one of the vaccuum lines???? cause more fuel to be pumped , more air???

unneccessarily!!

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smidy Community Regular

smidy

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i have also been told there might be a slight air leak in one of the vaccuum lines???? cause more fuel to be pumped , more air???

unneccessarily!!

all good found a crack in me intercooler ;) bogged and fixed can't wait for me boost control now :cheers::cheers:

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