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The mkiv Supra Owners Club

Judder!


Grazer

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In the last couple of days I have noticed a juddering sensation at max boost.

 

I recently fitted a Nur Spec which gave me boost of 1.5 bar :eek:

 

I fitted a CW restrictor ring last week which has brought my boost to a more reasonable 1.1bar :D

 

But it definitely feels a bit odd when it hits 1.1 - a bit like the RLTC kicking in in the wet (it still happens with rltc off)

 

I thought it might have been fuel cut, but reading old posts it doesn't sound like the same thing, as there's not a big loss of power.

 

Anyone got any ideas??

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Does if feel like a 'soft cut' where it just fluctuates a bit? Proper fuel cut is a brown trouser moment the first time you get it......

 

First guess would be spark plugs giving up - where the OK at 1.5 bar? Did you run it at that for long? Anything else changed?

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