Yes, as the cracks generally form where it seals on the tube.

i removed the egr tube. there was a small crack on sc side. i welded up ab ground smooth.then added red high temp rtv to both ends. drove car and saw 1 kr at 5k rpm better then the 5 i had. fuel psi @ idle-38 vacuum un hooked and car in gear with load psi at 46

also i only saw 5.5psi boost. maybe cause the ect was 192* and IAT was 102* when at a stop it can reach 150+. i ordered the heat insulator to wrap my intake pipe and make a air filter shield. also bought the stuff make a duct for cool air outside to enter.

my sc nose seal keeps leaking. i replaced it with a viton seal when i replaced my coupler cause the factory seal was leaking. and it drips on my belt and keeps squeeling. what should i do

Viton is a bad idea on a high-mileage SC. The long miles have worn a groove in your input shaft, and the Viton is too durable and stiff to adapt itself to that groove. I suggest using OEM Nitrile.

Leaking oil and a bad coupler won't cause low boost, but oil on your belt will cause slip and low boost.

i replaced the coupler to get rid of the raddle under the hood. i good with performance upgrades just not fuel injection and on gm cars.

where can i buy a completely rebuilt nose cone for my sc. so i dont have tow worry with the seal leaking if i replace it again.

www.canadiansupercharger.com

I'm moving your topic to 92-99. This seems to be much more about mechanical problems on your car than it does about performance ideas.

You need to get the car running right before you even think about more power.