Test pipe

[TTA 1077]

Looking for a Test Pipe 2.5" for a stock TTA exhaust.

 

[Jan Larsson]

Something like this:

BUICK GRAND NATIONAL 86-87 HIGH FLOW CATLESS TESTPIPE | eBay


Or slightly cheaper:

86-87 BUICK GRAND NATIONAL CONVERTER TEST PIPE | eBay

 

[TTA 1077]

The GN ones fit our exhausts? What about their CAT's will they fit too?

 

[PhillyD]

what do these test pipes do? bypass the cats?

 

[Jan Larsson]

The GN ones fit our exhausts? What about their CAT's will they fit too?

Yep

 

[Jan Larsson]

what do these test pipes do? bypass the cats?

They replace the cat.

 

[nickD]

PM sent

 

[tta299]

I got 1 never used 50 bux plus shipping ? I also have a set of flow matched used 50# injectors