RB Exhaust Question - Turbo Downpipe to N/A Presilencer

[Pete_89T2]

Originally Posted by My5ABaby

I have the full RB n/a exhaust (header --> 2.5" presilencer) and I'm turboing my car. Will the 3" turbo downpipe bolt to the 2.5" presilencer?


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Racing Beat Presilencer Pre silencer Turbo downpipe down pipe

I'm guessing no. For the T2's at least, RB makes two types of DP & presilencer designs. One type is the 3" DP & presilencer combo which is only compatible with the full RB exhaust system (turbo to tailpipes) - can't bolt this one up to a stock or stock replacement catback system. The other type is a 2-1/2" DP & presilencer combo, which is designed to replace everything from the turbo out to the stock main cat, and can be used with any stock replacement catback system.

[My5ABaby]

Originally Posted by Pete_89T2

I'm guessing no. For the T2's at least, RB makes two types of DP & presilencer designs. One type is the 3" DP & presilencer combo which is only compatible with the full RB exhaust system (turbo to tailpipes) - can't bolt this one up to a stock or stock replacement catback system. The other type is a 2-1/2" DP & presilencer combo, which is designed to replace everything from the turbo out to the stock main cat, and can be used with any stock replacement catback system.

I should have clarified perhaps. I have the full RB N/A exhaust, I just put the header --> presilencer in case it made a difference from the N/A downpipe --> presilencer.

So as a recap, the 2.5 to 2.5 will work.

Originally Posted by djmtsu

Yes Robert, it will.

That is the set up I was running on my FC.

So as a second recap, the 3 to 2.5 will also work.