Vy exhaust and performance

[jadenrichards]

Hey guys I have a vy commodore with a n/a ecotec and put competition pacemaker extractors, 2.5 inch cat delete pipes and a 2.5 inch twin cat back exhaust on and i have now lost a lot of bottom end torque and power. I knew before hand this would happen as it is a huge system for a n/a v6 but didn’t think it would make a significant difference in performance.
I know more air in would help so am getting the manifold insulator and plenum spacer
has anyone done this before and if so what did you do to get bottem end torque back?
will a tune simply fix it? or help?

 

[westside]

those competition extractors are more suited for L67, that is why you have no bottom end torque. get regular pacemakers that suit ecotec's only.

 

[bretttwo]

I'm interested to know aswel , except I think I'll use the 25mm and the 12mm spacer, stock headers just heat rap. With good plugs hi temp leads.And use the twin exhaust setup from the factory 300kw ve 3.6 calais. Definitely only be using one cat. And changing the center mufflers for resonators. And hopefully I get lucky with finding and being about to use the 5ltr vr or vs t.b I know it's only 4mm .

 

[vr304]

I'm interested to know aswel , except I think I'll use the 25mm and the 12mm spacer, stock headers just heat rap. With good plugs hi temp leads.And use the twin exhaust setup from the factory 300kw ve 3.6 calais. Definitely only be using one cat. And changing the center mufflers for resonators. And hopefully I get lucky with finding and being about to use the 5ltr vr or vs t.b I know it's only 4mm .

You do realise an exhaust system for a ve won’t fit your vu, totally different body and chassis design, also they never made a 300kw v6 either, 5L throttle body wont fit on an ecotec either they only fit with the older buick (vn-vr) v6’s

 

[Pollushon]

I'm certain four months later he's still under that car trying

 

[Fu Manchu]

I'm interested to know aswel , except I think I'll use the 25mm and the 12mm spacer, stock headers just heat rap. With good plugs hi temp leads.And use the twin exhaust setup from the factory 300kw ve 3.6 calais. Definitely only be using one cat. And changing the center mufflers for resonators. And hopefully I get lucky with finding and being about to use the 5ltr vr or vs t.b I know it's only 4mm .

This sounds like an amazing car that doesn’t exist.

 

[bretttwo]

You do realise an exhaust system for a ve won’t fit your vu, totally different body and chassis design, also they never made a 300kw v6 either, 5L throttle body wont fit on an ecotec either they only fit with the older buick (vn-vr) v6’s

Thank you good sir. And as for the 300kw v6 I don't know about you my friend but we got that car like that brand new. The car yard papers said 300kw . I'm not a holden master. I'm just interested in the ecotec. I understand what your saying about the exhaust, but maybe if I use resonators instead of that muffler I could have a hanger pick up of the Trans mount, I've not move fwd so it all eyes and information hunting. If you don't mind good sir what would be a good exhaust swap over. I really don't want to del the cat and have 2.5 with a single res and rear muffler. I want sound good not annoying.

 

[Fu Manchu]