Mpi turbo 180/190?

[murdered141]

What's the difference between the 180 and 190, I know there was an early stage 1 intercooled turbo, also believe early units had Mitsubishi turbo and Volvo units on later model's like mine, or is it the intake and exhaust configurations that give it +- 10 hp.

 

[InRBigness]

I am pretty sure that you need the intercooler to be truly 190HP. The trail version (Yamaha endorsed) is 180hp. For more horsepower you need bigger fuel pump and injectors.

 

[murdered141]

Just looking for clarification, not any power increases YET!

 

[madsledder]

190 comes with the eabc which gives more boost at altitude for the extra ponnies.

 

[Studroes144]

Should be known that the mpi turbo kits only make the advertised hp when a free flowing exhaust is used, when the quiet muffler is used the come in at 10+ hp less than advertised when dyno tested.

 

[murdered141]

Does anyone know at what hp or #'s of boost does the gems become inadequate to supply enough fuel, granted that the fuel pump has been upgraded but not the injectors, as a power commander is needed for injectors, i suspect the stock ecu won't recognize them and over fuel .

 

[madsledder]

I believe it is 7 but that could be dependent on altitude. After that a second gems to control a 4rth injector. Evo re-flash's the ecu and different gems numbers to run different injectors with the gems.

 

[Studroes144]

Does anyone know at what hp or #'s of boost does the gems become inadequate to supply enough fuel, granted that the fuel pump has been upgraded but not the injectors, as a power commander is needed for injectors, i suspect the stock ecu won't recognize them and over fuel .

Stock head studs and gasket will more than likely be the limiting factor at that point before the fueling, you may be able to have enough fuel to run 7 psi..maybe more, but I wouldn't try that without a minimum of putting in aftermarket head studs. You're correct on the bigger injectors, gems controller will not be able to tune for those.

 

[murdered141]

Do Afr's change when going from a 2" exhaust to 2.5"

 

[murdered141]

Do Afr's change when going from a 2" exhaust to 2.5"

Dammit, i hijacked my own thread

 

[Studroes144]

Do Afr's change when going from a 2" exhaust to 2.5"

When we dynoed mine afr's changed slightly, 2.5" did lean it out some..only .5-.7 if memory serves me correct..that was at higher boost. At low boost on the trail turbo it was even less.

 

[Yamadog]

A stock motor needs fuel pump and 4th injector to safely run 7# of boost anything over that head studs are a must. Blew the gasket in my 15 1&1/2 years ago at 480 miles running 7.5#s blew the 14 up at 6.5 with no added fuel pump or 4th injector. The 15 now has Evo flash and arp studs running 7.5# pump gas & 10.5 #'s with 50/50 race fuel and track dyno puts it at 265 hp at the crank. With free flow exhaust and plenty of fuel almost 9.75 hp per. 1# of boost.

My 14 on the track dyno with low compression pistons at 12.5#'s of boost was 143.65 hp at the track my 15 at 10.5 #'s is 144.86 hp and much snappier.

 

[Yamadog]

The 14 low compression pistons, 4th injector 2 gems controllers and the high flow fuel pump with MPI race pipe and Red is 12# and Blue is 9#'s of boost

The 15 arp studs and everything moved over from the 14 but with EVO Flash. Look at the low end this is 7.5 and 10.5 #'s of boost and the blue goes from 113.03 at 9#'s to 129.02 at 7.5#'s

 

[Studroes144]

A stock motor needs fuel pump and 4th injector to safely run 7# of boost anything over that head studs are a must. Blew the gasket in my 15 1&1/2 years ago at 480 miles running 7.5#s blew the 14 up at 6.5 with no added fuel pump or 4th injector. The 15 now has Evo flash and arp studs running 7.5# pump gas & 10.5 #'s with 50/50 race fuel and track dyno puts it at 265 hp at the crank. With free flow exhaust and plenty of fuel almost 9.75 hp per. 1# of boost.

My 14 on the track dyno with low compression pistons at 12.5#'s of boost was 143.65 hp at the track my 15 at 10.5 #'s is 144.86 hp and much snappier.

So long story short, don't get greedy on a stock engine when it comes to boost. Or what is it that Ulmer says?..how lucky are u feeling? Lol that question goes a long ways. If you're running over 6psi on a stock engine without head studs that's definitely a question you need to ask yourself.

 

[Studroes144]

The 14 low compression pistons, 4th injector 2 gems controllers and the high flow fuel pump with MPI race pipe and Red is 12# and Blue is 9#'s of boostView attachment 133588


The 15 arp studs and everything moved over from the 14 but with EVO Flash. Look at the low end this is 7.5 and 10.5 #'s of boost and the blue goes from 113.03 at 9#'s to 129.02 at 7.5#'s

View attachment 133589

Upgraded turbo on the 15 with 19t billet wheel too correct? That's a significant upgrade when comparing boost for boost