MPI wants to offer several different upgrade paths for our Yamaha 180 Viper turbo. With the stock horsepower rated at 180-190 that might be just all that you need but for those that want more now or might want more in the future we’ve designed it to be upgradable. The stage 1 upgrade will allow you to increase the boost to 11-12 psi giving you 230-240 horsepower. This will include: high flow intercooler, high boost waste gate, and headshim. The headshim will allow you to run on premium pump gas. The intercooler is a direct replacement to the original air box so install is simple. The price for the stage 1 upgrade will be $1500.00. We are offering a snow check program. If you place an order with a $150.00 deposit before April 30<SUP>th</SUP> you’ll receive a 10% discount on you whole order. This may be combined with other upgrades like upgraded fuel pump kit ($319.95) and headstuds ($199.95). Please call if you have any questions 888-649-4609.
