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The mkiv Supra Owners Club

Car not boosting properly


Jspec Germany

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Strange one here and can't find anything similar with search.

 

Car normally boosts to around .9-1.0 bar. Recently, will only boost to .7 bar. Couple of mornings ago, hit 1.1. Now back to .7 max. What do you think?

 

SMIC doesn't look that bad, but not perfect. About to swap to stock airbox and new plugs + new fuel filter. Thoughts?

 

Gas is the same = ESSO Super Plus.

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Signs of a possible weak IACV, have you tried running it in TTC? if not then give it ago (Hose method), it will only take a 15 minutes or so to set up. This by passes the IACV's and if the car boost as normal then you know where your problem is.

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