Catless downpipe
 

Quick question - about how much HP will a catless DP add to a 2.4?

138 views and no answer. I'll answer thanks to another forums member. 6-8 at the wheels. That's all I needed to know.

If you already have a catback I would suggest a highflow catted downpipe of 2.5". Otherwise your hhr will be loud as f*** and it will drone you out. Gains will be almost the same between the two anyway.

And if you don't already have one, add a Header. ;)

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Maybe 10 with the header?

I have to Pass Emissions testing here so I went to the high flo catted down pipe.

Alot more "Performance" info about our Ecotecs on the Cobalt forums, so responses tend to come quicker.

where can you get a quality header? see lots on ebay but random manufacturers and not sure of the quality

Bad Mab, ZZP have them.

Bad Mabs are $189.99, luckily I got mine slightly used and got it locally for $40.00.

I resurfaced the flange on my Delta Stationary Belt / Dist sander and it's good as new.

I think the guy I got it from had a exhaust leak and decided to buy yet another header instead of a 10 minute resurfacing job. I don't think he knew they could be resurfaced to reflatten the flange.

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You can see here this side was just about done.

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Finished

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Took me maybe 10-15 minutes per side on my stationary belt sander to correct it. :cool:


Someone is selling a Bad Mab on the cobalt forums, I think they are asking $130.00 for it.