11 replies to this topic

[mini998]

mpi or spi

which engine is beter on these areas

economy
reliability
power/performance
maintainability
tunability

thank you in advance
-ima

[Bluemini]

Niether, go for the good old fashioned carb, so much easier and cheaper to work with and mod.

[mini998]

how many injection points are there in mpi engine

[duds100]

two. Multi-point really means twin-point. Injection minis are wack because they are full of emissions rubbish.

[clubman katie B.F]

both pants...harder and more expensive to tune....lots and lots of extra equipment that gets in the way if you want to do anything more than look at your engine....like blue mini says...get the carb model

[m3ntalist]

its a shame most carb minis have now gone manky though!

[JamesM]

Carb???

Oh thats the thing you hav eto top up with oil whenever you want to go anywhere...

[maph2]

unless you have aftermarket fuel injection which i way better than carbs

[Bungle]

our club had a rolling road day last year we had
2 cooper single point cars
2 cooper twin point cars
my cooper carb
and a mg metro engined mini

all had a stage 1 kit . manifold , K&N filter , exhaust

the single point cars were making around 65 hp
the twin point cars were making around 67 hp
my cooper carb was making 70 hp
and the MG metro engined car was 78hp

so on these results go carb and MG metro is best

[P91MER]

if you have got the money to tune one, go for an MPI, with the right - Slarke ECU priced at £900 it will outperform any carb, or SPI, just with the ECU alone..

But upgrading power, means upgrading gearbox, so it will soon add up!!


Rich

[jeffriesmullet]

least with mpi you dont have to worry about the dizzy getting a millilitre of water on it and brakeing down in the poring rain



mpi mpi mpi mpi mpi mpi mpi mpi mpi

[Dan]

MPi definitely, SPi's are pants!

The MPi is properly developed whereas the SPi was just a quick fix to get it through the type approval.