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Hi how can i build more boost with a fuel cut lc?
A fuel cut really isn't going to be ideal for building boost. You can still use ignition retard with some degree of success because the cylinders that are firing will be firing later. You just won't get the benefit of the unburnt fuel and air combusting in the exhaust manifold like you do with an ignition cut.
The other option you can try is simply increasing the rpm limit. This will provide more exhaust energy to help spool the turbo. This technique works quite well with small to moderate sized turbos but if you have a drag specific setup then it's likely that an rpm limit alone won't be able to generate enough boost for the car to launch well.
