986 3400cc supercharger

[Design]

Hi,
I'm looking for help and advice on fitting a supercharger to my 986
Very modified already, 3.2 block bored and lined to 3.4
Already been on the dyno and running 308bhp
They can get more but the stock injectors are maxing out and starts to run lean
So, where can I get the parts or a kit to fit a supercharger
Where can I get bigger injectors (what size to go for)
Can the stock dme cope with this
Only going to run max 6psi boost
Any help or advice appreciated, in based in the U.K., but will ship bits in from the USA if needed

Richard

[The Radium King]

no-one makes a kit anymore. TPC used to, as did imagine auto (iA). you can find them on ebay and the forums on occasion. tpc used an eaton roots unit mounted down by the exhaust, ia used a centrifugal unit up by the ac compressor ( i think, not a lot of them around).

dme can't handle larger injectors without programming which is tough to find - only a few firms do the 7.2 ecu and they charge big $ (not sure the year of your car so uncertain what dme you have). tpc did engine management with a 7th injector and a stand-alone computer; you could also probably rig a piggyback to work. you'll also have to sort out a way to deal with the air-oil separator - one-way valves or dump to a catch can instead.

lot of folks will tell you that you can't do forced induction on these engines because of the high compression ratio and relative fragility of the engine. that you don't need more hp, just learn how to drive faster, etc. personally, i say your call - potential for shorter engine life quite easily offset by super fun wow factor.

on another note, porsche is running the 996 gt3 w the same injectors and fuel pressure regulator, so sure the lean condition is from injectors and not something else?

[Steve Tinker]

Richard,
There is a Porsche tuning and race prep specialist around the London area (I think) called Parr who imported TPC supercharge kits and fitted / tuned them on Boxsters and Caymans. They are a well respected outfit who would probably be able to help you.

[BYprodriver]

Originally Posted by Design

Hi,
I'm looking for help and advice on fitting a supercharger to my 986
Very modified already, 3.2 block bored and lined to 3.4
Already been on the dyno and running 308bhp
They can get more but the stock injectors are maxing out and starts to run lean
So, where can I get the parts or a kit to fit a supercharger
Where can I get bigger injectors (what size to go for)
Can the stock dme cope with this
Only going to run max 6psi boost
Any help or advice appreciated, in based in the U.K., but will ship bits in from the USA if needed

Richard

I have a IA intake hose kit.

As for injectors, have them pressure cleaned & flow tested off the engine before changing them.