snowdave
Veteran
I have a chance to buy a 07 apex attack with a rear mount turbo done by FPP. my questions are is this motor user friendly with this turbo set up? Its set at 6 lbs. boost on low and 12 on high. is the dependability still there? is this machine going to get 7 miles per gallion for normal trail riding? I am sure good fuel is important but i am not sure if this sled is an ok choice for trail riding on pump gas. I have previously had big bore srx"s and BB vipers but wanted to go 4 stroke without any problems. There has to be riders out there with rear mount torbo apex, what are your experiences, good and bad?? Thanks
mbarryracing
TY 4 Stroke God
- Joined
- Aug 31, 2007
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- Location
- Springville NY
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- Snowmobile
- 2006 Yamaha Attak Turbo
2015 SR Viper RTX-DX
1996 Vmax 600XT
All the FPP kit's are very user friendly, gas and go, (as well as the Apex engine itself) and dependability is hinged on running an adaquate fuel grade for your level of boost... Detonation under load / boost is what hurts any engine, but the FPP RX1/Apex style kits, with their tunnel snow intercooler along with an air to air up front, impressingly keeps the intake temps in-check and thus those kits always have been more tolerant to marginal fuel quality.
Is the engine stock, or decompressed?
I had run my standard FPP stage2 kit at 12 lbs (decompressed pistons) for 3000+ trail miles with nothing more then the typical exhaust donut / gasket replacements and annual oil & filter change, a new stock belt every season wether it needed it or not.
The benefit of a turbo on a Yamaha is it will get nearly the same fuel economy as a stocker as long as you aren't throttle happy on the boost often. With boost (added air) comes added fuel consumption...
The key to making the rear mounts respond well is ensuring there are minimal exhaust and boost leaks, and of course good clutching.
My only bad experience was at first I strayed away from the setup that FPP recommended (fuel controller and clutching) and got my tune all catywampas, and a weak stock in-tank fuel pump... Other then that, I absolutely loved the sled.
Is the engine stock, or decompressed?
I had run my standard FPP stage2 kit at 12 lbs (decompressed pistons) for 3000+ trail miles with nothing more then the typical exhaust donut / gasket replacements and annual oil & filter change, a new stock belt every season wether it needed it or not.
The benefit of a turbo on a Yamaha is it will get nearly the same fuel economy as a stocker as long as you aren't throttle happy on the boost often. With boost (added air) comes added fuel consumption...
The key to making the rear mounts respond well is ensuring there are minimal exhaust and boost leaks, and of course good clutching.
My only bad experience was at first I strayed away from the setup that FPP recommended (fuel controller and clutching) and got my tune all catywampas, and a weak stock in-tank fuel pump... Other then that, I absolutely loved the sled.
