OEM DP to CBE ??

Help please guys! I need to get this back together before my wife hears my wagon with a open DP, lol

 

I'm matting up my OEM DP to my Greddy SP2 exhaust (60mm-2.36") I'll be changing the DP for a catted Cobb in the spring.

 

I thought I could use a 3" 2x Grimspeed flat gasket but a local shop said it will leak if I don't use a Grimspeed adapter, 2x flat gasket with the OEM donut.

 

After reading a thread Underdog says I should use the springs and bolts if I don't use have a flex joint at the end of the DP or at the beginning of the midpipe.

 

Thank you all who chime in.

do what the local shop said, and use the spring bolts at the connection that uses the donut gasket.

Thanks to all. I spoke with Greddy, the local shop and Underdog (Rick) I'm going without the spring bolts but using the adapter!

My wagon has had both, The Invidia Dp with the 3" 2X thick to stock midpipe was fine, I may have used the red RTV sealant to help. It currently has the Grimmspeed adaptor with the RTV, 3" 2X thick, no springs.

I did the adaptor just because...

 

I have not used springs at that joint for many, many years.

Awesome, thx Max, if I get everything I need and some warm weather Sunday I'll be under her again. When I install my Cobb DP I think they should mate up fine without the adapter.

Grimmspeed OEM DP to Catback adapter, 2x gasket and oem donut worked great!