swapping tuners

[Mongoose]

Would putting a stock 200 hp 1996 tuner in a 1994 150XR6 lg c. i. give me any horsepower increase. only mod. to motor is a set of fiber reeds. looking to get a few extra horses without to much modification . The tuner is a freebie.

[Mark75H]

any increase is doubtful

any noticable increase is even less likely

[Roy W.]

Some of the Merc 150's and 175's come with 14 inch tuners. If you have one of those, swapping for a 7 3/4 inch tuner will move your power band around some, meaning you will loose some bottom end grunt and may pick up 100 rpm (translates to 1 mph) on the top. The fiberglass reeds tend to overcome the bottom end loss inherent with going with a shorter tuner. In my opinion swapping one short tuner for another short tuner is a waste of time and money.

If you drop your lower unit and use a flashlight and look up in the midsection, you can tell which length tuner you have. The 14 inch tuner sticks almost all the way to the bottom of the midsection.

[Dave S]

That both the motors you have use the same tunnas. The 96 Merc 200 has the 150style tunna, I belive. Look up the Exhaust housing before you change them. The 200 hp one has a bigger outlet, the 150 type has straight walls.

[THE FAST ONE]

MongoosE HI,If The Xr6 Is Like From Factory,it Has One Long Enough To Make Two Of Them,it Should Go All Way To Lower Unit,change It Thks Ed