15 Viper boost Questios

feetsbig · Feb 3, 2017

Hi,I recently bought a used 15 Viper with the MPI 190 kit and the intercooler upgade kit.Its pushing about 6psi boost on 91 non ethanol at 5000 ft . Can I turn up the boost a bit and at what point is a head shim and studs needed?What is the recomended shift rpm and at what rpm is the rev limiter?

06yamahaapex · Feb 3, 2017

feetsbig said:
Hi,I recently bought a used 15 Viper with the MPI 190 kit and the intercooler upgade kit.Its pushing about 6psi boost on 91 non ethanol at 5000 ft . Can I turn up the boost a bit and at what point is a head shim and studs needed?What is the recomended shift rpm and at what rpm is the rev limiter?

Pm you my number. I can answer most questions you have about boosted vipers.

Lund · Feb 3, 2017

feetsbig said:
Hi,I recently bought a used 15 Viper with the MPI 190 kit and the intercooler upgade kit.Its pushing about 6psi boost on 91 non ethanol at 5000 ft . Can I turn up the boost a bit and at what point is a head shim and studs needed?What is the recomended shift rpm and at what rpm is the rev limiter?

With a 190 kit your very limited to how much boost you will get. Your unlikely to exceed much over the rated 190hp, so your kit probably will not dail over 8lbs.
You can run pump fuel no problem on that set up.

15 Viper boost Questios

feetsbig

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06yamahaapex

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Lund

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