The new VMAX kits look great, suck through chargers can be made to work very well. No doubt there is some compromise, but then what a-series doesn't when you are pushing over 100bhp, I wouldn't run one without water injection.
In my experianced they are no less reliable if the engine is solid and I have always used a standard gearbox, drops and clutch.
Blow through, suck through I haven't seen much in the way of power difference over the years. The biggest difference is to have a proper setup, and all the bits working well together is much better. Short cutting this setup with someone who has built a few and tuned them like Stuart at VMAX is worth its weight in gold.
I would also say spending doesn't stop at the kit... You need a proper MAP based ignition system, setup, water injection, 2 core rad, decent spark plugs, good fuel pump, FUEL! etc. If you still want decent mpg them a full injection system is worth it, if you do a few long trips a year it will pay for it's self in the fuel saving from my experience.. Most people will run the higher RON petrol, as to add to the knock protection.
Just some thoughts, I never did it all at once, I whish I had! Once your running forced induction you will never go back!
Edited by Gr4h4m, 31 August 2016 - 09:51 AM.