Buick Regal Gs Downpipe. Evo X Vs Buick Regal GS. Buick Regal Turbo ZZP Catless Downpipe - Duration.
I really enjoy the new downpipe on my regal. The only issue its given me is that the bank 1 o2 sensor lights up the check engine light every time I drive it with a p420 code. Made right here in the USA.
GM LNFLDKLHU Exhaust Manifold To Turbo Gasket.
Both downstream sensors were replaced so its very confusing to me. TIG-Welded by certified craftsmen for race proven strength and durability. This is the only downpipe on the market for the Regal GS that has an inlet flange diameter that actually matches the turbos 35 outlet. The grade 109 hardware included is an added bonus.