(I know fuck all about SCs)
Do superchargers run an oil line like a turbo?

(I know fuck all about SCs)
Do superchargers run an oil line like a turbo?

Couldn't you wire the charger clutch through a relay connected to say a throttle position switch (which is wired NC so the clutch disengages when you come off the throttle)

I.E.

Switch setup to cut relay out when throttle is at 0%
Supercharger clutch is wired through the relay so when you come off the throttle it drops the charger out.

This shouldn't be too hard to do, is that the only reason you cannot use the stock ecu or is it a fueling issue?

Couldn't you wire the charger clutch through a relay connected to say a throttle position switch (which is wired NC so the clutch disengages when you come off the throttle)

Doing this leads to massive air intake temp due to the incoming air being forced to rotate the supercharger rotors as the engine breathes.
You'd need to coincide your switch with a bypass valve actuated by a solenoid/vacuum actuator or similar so that it allows freeflowing air to bypass the supercharger when it's off.

For the same reason you need another bypass to allow air to flow when the throttlebody is closed by the supercharger is on.

so is there a cheaper way of doing it Id like to keep the std computer if I can my mate runs a blower on his 100 series 4.5l petrol cruiser all he has different is another fuel pump to increase fuel press and it gose like a charm has been on the car for nine years like this. cant I do somthing simler?

No.

You need to solve these problems, plus more.

Fuel supply ( pressure and flow )
Injector size
ECU mapping
Ignition curve/ Timing ( can you re-graph a dizzy?)
Mounting and hardware
Plumbing
and more....

Boost = money.

If its the early GTI that still runs the dizzy you should be able to find a boost retard canister and graft it to your dizzy somehow to take away timing under boost.

ALL Gti's run a dizzy AFAIK. Never seen a coil pack one yet

u can get chipped ecu's very cheep for boost, i have sceen them work, however they are for turbo, the guy that does them remaps them to suit. you could contact him and ask if he would do a supercharger one? that has always been a idea of mine when i build my next motor

http://www.redlinegti.com/forum/viewtop ... lit=+gtaye
This is most likely the bloke you're referring to?
They're a very hit and miss option in my opinion.
I ran a chiptorque turbo kit in my daily with a chipped ecu. I was lucky.
Several other ppl running the same kit lunched their engines on very minimal boost.

Without brand bashing anyone, I too had troubles with my 300zx TT after having a certain goldcoast "tuning" company, "chip" my ECU. After replacing the botched ECU and failed turbos some 3 weeks later, I fitted an Apexi Power FC, had it tuned by a reputable company and never looked back.