[s-cars] detination

[Bill Healy]

I'm new to the list, I don't know what took me so long.
I have a '93 S4, stage 1+ with RS2 Manifold, K&N and Stebro exhaust. I've
upgraded the bypass valve to a hoppin sport unit.
I've been experiencing what feels like a boost leak between 4 and 5 lbs, as
well as
some detonation under hard acceleration. I'm using 94 octane fuel, and I'm
not getting a check engine light. I'm waiting to upgrade my hoses, clamps
and vaccum lines soon.

the car has 185K with original injectors and cats.

Any help would be appreciated.

Bill Healy