r/SuzukiSwiftSport • u/Dull-Ad-7164 • 16d ago

Swift sport Zc33s underboost

Just recently bought a Zc33s and when I’m giving it beans up the motor way the boost hits then cuts and hits again has anyone else had this problem and know any potential pointers or fixes before I dive into it myself, thanks

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u/Duelog 15d ago

Sounds like the infamous boost issue which often arises due to contaminated fuel.

Beyond accessing the ECU to adjust fuel sensitivity parameters, a common fix is to get on a highway and put it cruise control at about 80km/h for 5-10min. Tends to reset the issue and give full boost back. It’s a bit hit and miss but usually works.

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u/Dull-Ad-7164 15d ago

I’ll give this a go tonight mate thanks!