Stage 3 mpi tuning, advice please
Turbo Mini Forums

Hi guys finished restoring my mpi cooper around 3 years ago and has been brilliant fun to drive over the summer.

Engine is completely standard but i have fitted spax coilovers and adjustable arms which have been properly set up and makes the car great to drive.

I have now got to the stage where in at uni, and when im home have a full time job in a cad office so can afford to hunt for some more power.

few pics










My plans are to remove the engine to start.

3.44 fd
x pin diff

swiftune sw5i
minisport adjustable timing gears
vmax stage 3 head
1.5 rockers
lcb
power boost valve

i understand i can expect to hit over 80 with this.

is there anything else i should consider, my engine has covered 56,000 miles and still pulls strong and has never caused any issues.

Thanks Jayme

Edited by AlexB on 8th Aug, 2013.

Instagram: bighill93

Also i intend to do the work myself to keep the cost down, i am fairly confident with anything mechanical.

Instagram: bighill93

3.2 fd with those wheels and tyre sizes IMO

Thanks

benross have i read on the forum you modify cylinderheads?

Instagram: bighill93

you forgot to mention the turbo and Megasquirt on your list of mods? :)

Edit: Lovely car by the way

Edited by dan187 on 8th Aug, 2013.

1275 N/A Sprite, 998 T2 Turbo Mayfair
1275 EFi Turbo

I started tuning my mpi the same way. St3 head, 1.5 roller rockers, k+n induction, decent exhaust system, 52mm throttle body from a lotus elise modified to fit. Then overbored to 1360, sw5i cam, close ratio gearbox, 3.2 final drive, ported inlet manifold. It went really well until i had gearbox troubles, though im in the prosess of rebulding to that spec. Cheers, dan

Instagram: bighill93

oh and a link to my a feature, some othe really cool stuff on it aswell.

http://www.autolifers.com/limelight-jayme-...-mini-cooper-s/

if anyone on fb give them a like.

Instagram: bighill93

Dan has a point, the Mpi boxes are notorious for being shit. Worth sorting that while the engine is out.

Your limit with the Mpi is the fuelling. 80 is probably a sensible target, but don't be surprised if you don't make it.

The only way to make real power is by fitting a more tuneable injection system.

Fastest 998 mini in the world? 13.05 1/4 mile 106mph