Floyd

iTrader: (9)

I have read about people and garages changing restrictors, 1.2mm and 1.3mm sizes etc. Why, what do they do and where are they?

F

coyote

On some rexes part of the boost control is done by small plastic restrictors in the vaccuum hoses. Smaller restrictors = less pressure = more/faster boost.

Floyd

iTrader: (9)

So, if I find the restrictor and put a smaller one in then I'll get a bit more boost right?

What's the down side?

F

Bob Rawle

Restrictors are normally made of brass, what effect they have depends on the MY of car, MY92-96 fitting a smaller restrictor would have a totally opposite effect to MY97-00.

Be careful you don't hit the boost cut.

Floyd

iTrader: (9)

I've got a MY00 so it'll be a larger one then, but I guess I'll leave this mod for a while as I've experienced boost cut in a friends car and it was a bit violent...

BTW thanks Bob for the info you sent me the other day, I've also now found the grinding stones in RS cat.

F